mirror of
https://github.com/czlonkowski/n8n-mcp.git
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feat: implement comprehensive expression format validation system
- Add universal expression validator with 100% reliable detection - Implement confidence-based scoring for node-specific recommendations - Add resource locator format detection and validation - Fix pattern matching precision (exact/prefix instead of includes) - Add recursion depth protection (MAX_RECURSION_DEPTH = 100) - Validate resource locator modes (id, url, expression, name, list) - Separate universal rules from node-specific intelligence - Add comprehensive test coverage (94%+ statements) - Prevent common AI agent mistakes with expressions Addresses code review feedback with critical fixes and enhancements. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
czlonkowski
@@ -7,6 +7,31 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
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## [Unreleased]
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### Added
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- **Comprehensive Expression Format Validation System**: Three-tier validation strategy for n8n expressions
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- **Universal Expression Validator**: 100% reliable detection of expression format issues
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- Enforces required `=` prefix for all expressions `{{ }}`
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- Validates expression syntax (bracket matching, empty expressions)
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- Detects common mistakes (template literals, nested brackets, double prefixes)
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- Provides confidence score of 1.0 for universal rules
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- **Confidence-Based Node-Specific Recommendations**: Intelligent resource locator suggestions
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- Confidence scoring system (0.0 to 1.0) for field-specific recommendations
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- High confidence (≥0.8): Exact field matches for known nodes (GitHub owner/repository, Slack channels)
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- Medium confidence (≥0.5): Field pattern matches (fields ending in Id, Key, Name)
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- Factors: exact field match, field patterns, value patterns, node category
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- **Resource Locator Format Detection**: Identifies fields needing `__rl` structure
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- Validates resource locator mode (id, url, expression, name, list)
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- Auto-fixes missing prefixes in resource locator values
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- Provides clear JSON examples showing correct format
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- **Enhanced Safety Features**:
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- Recursion depth protection (MAX_RECURSION_DEPTH = 100) prevents infinite loops
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- Pattern matching precision using exact/prefix matching instead of includes()
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- Circular reference detection with WeakSet
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- **Separation of Concerns**: Clean architecture for maintainability
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- Universal rules separated from node-specific intelligence
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- Confidence-based application of suggestions
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- Future-proof design that works with any n8n node
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## [2.12.1] - 2025-09-22
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### Fixed
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230
scripts/test-expression-format-validation.js
Normal file
230
scripts/test-expression-format-validation.js
Normal file
@@ -0,0 +1,230 @@
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#!/usr/bin/env node
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/**
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* Test script for expression format validation
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* Tests the validation of expression prefixes and resource locator formats
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*/
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const { WorkflowValidator } = require('../dist/services/workflow-validator.js');
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const { NodeRepository } = require('../dist/database/node-repository.js');
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const { EnhancedConfigValidator } = require('../dist/services/enhanced-config-validator.js');
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const { createDatabaseAdapter } = require('../dist/database/database-adapter.js');
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const path = require('path');
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async function runTests() {
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// Initialize database
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const dbPath = path.join(__dirname, '..', 'data', 'nodes.db');
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const adapter = await createDatabaseAdapter(dbPath);
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const db = adapter;
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const nodeRepository = new NodeRepository(db);
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const validator = new WorkflowValidator(nodeRepository, EnhancedConfigValidator);
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console.log('\n🧪 Testing Expression Format Validation\n');
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console.log('=' .repeat(60));
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// Test 1: Email node with missing = prefix
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console.log('\n📝 Test 1: Email Send node - Missing = prefix');
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console.log('-'.repeat(40));
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const emailWorkflowIncorrect = {
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nodes: [
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{
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id: 'b9dd1cfd-ee66-4049-97e7-1af6d976a4e0',
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name: 'Error Handler',
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type: 'n8n-nodes-base.emailSend',
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typeVersion: 2.1,
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position: [-128, 400],
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parameters: {
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fromEmail: '{{ $env.ADMIN_EMAIL }}', // INCORRECT - missing =
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toEmail: 'admin@company.com',
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subject: 'GitHub Issue Workflow Error - HIGH PRIORITY',
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options: {}
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},
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credentials: {
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smtp: {
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id: '7AQ08VMFHubmfvzR',
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name: 'romuald@aiadvisors.pl'
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}
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}
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}
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],
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connections: {}
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};
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const result1 = await validator.validateWorkflow(emailWorkflowIncorrect);
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if (result1.errors.some(e => e.message.includes('Expression format'))) {
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console.log('✅ ERROR DETECTED (correct behavior):');
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const formatError = result1.errors.find(e => e.message.includes('Expression format'));
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console.log('\n' + formatError.message);
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} else {
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console.log('❌ No expression format error detected (should have detected missing prefix)');
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}
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// Test 2: Email node with correct = prefix
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console.log('\n📝 Test 2: Email Send node - Correct = prefix');
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console.log('-'.repeat(40));
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const emailWorkflowCorrect = {
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nodes: [
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{
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id: 'b9dd1cfd-ee66-4049-97e7-1af6d976a4e0',
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name: 'Error Handler',
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type: 'n8n-nodes-base.emailSend',
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typeVersion: 2.1,
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position: [-128, 400],
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parameters: {
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fromEmail: '={{ $env.ADMIN_EMAIL }}', // CORRECT - has =
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toEmail: 'admin@company.com',
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subject: 'GitHub Issue Workflow Error - HIGH PRIORITY',
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options: {}
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}
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}
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],
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connections: {}
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};
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const result2 = await validator.validateWorkflow(emailWorkflowCorrect);
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if (result2.errors.some(e => e.message.includes('Expression format'))) {
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console.log('❌ Unexpected expression format error (should accept = prefix)');
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} else {
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console.log('✅ No expression format errors (correct!)');
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}
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// Test 3: GitHub node without resource locator format
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console.log('\n📝 Test 3: GitHub node - Missing resource locator format');
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console.log('-'.repeat(40));
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const githubWorkflowIncorrect = {
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nodes: [
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{
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id: '3c742ca1-af8f-4d80-a47e-e68fb1ced491',
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name: 'Send Welcome Comment',
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type: 'n8n-nodes-base.github',
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typeVersion: 1.1,
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position: [-240, 96],
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parameters: {
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operation: 'createComment',
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owner: '{{ $vars.GITHUB_OWNER }}', // INCORRECT - needs RL format
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repository: '{{ $vars.GITHUB_REPO }}', // INCORRECT - needs RL format
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issueNumber: null,
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body: '👋 Hi @{{ $(\'Extract Issue Data\').first().json.author }}!' // INCORRECT - missing =
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},
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credentials: {
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githubApi: {
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id: 'edgpwh6ldYN07MXx',
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name: 'GitHub account'
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}
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}
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}
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],
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connections: {}
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};
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const result3 = await validator.validateWorkflow(githubWorkflowIncorrect);
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const formatErrors = result3.errors.filter(e => e.message.includes('Expression format'));
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console.log(`\nFound ${formatErrors.length} expression format errors:`);
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if (formatErrors.length >= 3) {
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console.log('✅ All format issues detected:');
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formatErrors.forEach((error, index) => {
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const field = error.message.match(/Field '([^']+)'/)?.[1] || 'unknown';
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console.log(` ${index + 1}. Field '${field}' - ${error.message.includes('resource locator') ? 'Needs RL format' : 'Missing = prefix'}`);
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});
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} else {
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console.log('❌ Not all format issues detected');
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}
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// Test 4: GitHub node with correct resource locator format
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console.log('\n📝 Test 4: GitHub node - Correct resource locator format');
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console.log('-'.repeat(40));
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const githubWorkflowCorrect = {
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nodes: [
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{
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id: '3c742ca1-af8f-4d80-a47e-e68fb1ced491',
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name: 'Send Welcome Comment',
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type: 'n8n-nodes-base.github',
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typeVersion: 1.1,
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position: [-240, 96],
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parameters: {
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operation: 'createComment',
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owner: {
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__rl: true,
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value: '={{ $vars.GITHUB_OWNER }}', // CORRECT - RL format with =
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mode: 'expression'
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},
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repository: {
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__rl: true,
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value: '={{ $vars.GITHUB_REPO }}', // CORRECT - RL format with =
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mode: 'expression'
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},
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issueNumber: 123,
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body: '=👋 Hi @{{ $(\'Extract Issue Data\').first().json.author }}!' // CORRECT - has =
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}
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}
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],
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connections: {}
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};
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const result4 = await validator.validateWorkflow(githubWorkflowCorrect);
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const formatErrors4 = result4.errors.filter(e => e.message.includes('Expression format'));
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if (formatErrors4.length === 0) {
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console.log('✅ No expression format errors (correct!)');
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} else {
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console.log(`❌ Unexpected expression format errors: ${formatErrors4.length}`);
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formatErrors4.forEach(e => console.log(' - ' + e.message.split('\n')[0]));
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}
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// Test 5: Mixed content expressions
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console.log('\n📝 Test 5: Mixed content with expressions');
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console.log('-'.repeat(40));
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const mixedContentWorkflow = {
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nodes: [
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{
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id: '1',
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name: 'HTTP Request',
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type: 'n8n-nodes-base.httpRequest',
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typeVersion: 4,
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position: [0, 0],
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parameters: {
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url: 'https://api.example.com/users/{{ $json.userId }}', // INCORRECT
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headers: {
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'Authorization': '=Bearer {{ $env.API_TOKEN }}' // CORRECT
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}
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}
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}
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],
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connections: {}
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};
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const result5 = await validator.validateWorkflow(mixedContentWorkflow);
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const urlError = result5.errors.find(e => e.message.includes('url') && e.message.includes('Expression format'));
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if (urlError) {
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console.log('✅ Mixed content error detected for URL field');
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console.log(' Should be: "=https://api.example.com/users/{{ $json.userId }}"');
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} else {
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console.log('❌ Mixed content error not detected');
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}
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console.log('\n' + '='.repeat(60));
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console.log('\n✨ Expression Format Validation Summary:');
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console.log(' - Detects missing = prefix in expressions');
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console.log(' - Identifies fields needing resource locator format');
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console.log(' - Provides clear correction examples');
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console.log(' - Handles mixed literal and expression content');
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// Close database
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db.close();
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}
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runTests().catch(error => {
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console.error('Test failed:', error);
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process.exit(1);
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});
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211
src/services/confidence-scorer.ts
Normal file
211
src/services/confidence-scorer.ts
Normal file
@@ -0,0 +1,211 @@
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/**
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* Confidence Scorer for node-specific validations
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*
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* Provides confidence scores for node-specific recommendations,
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* allowing users to understand the reliability of suggestions.
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*/
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export interface ConfidenceScore {
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value: number; // 0.0 to 1.0
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reason: string;
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factors: ConfidenceFactor[];
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}
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export interface ConfidenceFactor {
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name: string;
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weight: number;
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matched: boolean;
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description: string;
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}
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export class ConfidenceScorer {
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/**
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* Calculate confidence score for resource locator recommendation
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*/
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static scoreResourceLocatorRecommendation(
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fieldName: string,
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nodeType: string,
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value: string
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): ConfidenceScore {
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const factors: ConfidenceFactor[] = [];
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let totalWeight = 0;
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let matchedWeight = 0;
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// Factor 1: Exact field name match (highest confidence)
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const exactFieldMatch = this.checkExactFieldMatch(fieldName, nodeType);
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factors.push({
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name: 'exact-field-match',
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weight: 0.5,
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matched: exactFieldMatch,
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description: `Field name '${fieldName}' is known to use resource locator in ${nodeType}`
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});
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// Factor 2: Field name pattern (medium confidence)
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const patternMatch = this.checkFieldPattern(fieldName);
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factors.push({
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name: 'field-pattern',
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weight: 0.3,
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matched: patternMatch,
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description: `Field name '${fieldName}' matches common resource locator patterns`
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});
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// Factor 3: Value pattern (low confidence)
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const valuePattern = this.checkValuePattern(value);
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factors.push({
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name: 'value-pattern',
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weight: 0.1,
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matched: valuePattern,
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description: 'Value contains patterns typical of resource identifiers'
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});
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// Factor 4: Node type category (medium confidence)
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const nodeCategory = this.checkNodeCategory(nodeType);
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factors.push({
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name: 'node-category',
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weight: 0.1,
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matched: nodeCategory,
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description: `Node type '${nodeType}' typically uses resource locators`
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});
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// Calculate final score
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for (const factor of factors) {
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totalWeight += factor.weight;
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if (factor.matched) {
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matchedWeight += factor.weight;
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}
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}
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const score = totalWeight > 0 ? matchedWeight / totalWeight : 0;
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// Determine reason based on score
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let reason: string;
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if (score >= 0.8) {
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reason = 'High confidence: Multiple strong indicators suggest resource locator format';
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} else if (score >= 0.5) {
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reason = 'Medium confidence: Some indicators suggest resource locator format';
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} else if (score >= 0.3) {
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reason = 'Low confidence: Weak indicators for resource locator format';
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} else {
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reason = 'Very low confidence: Minimal evidence for resource locator format';
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}
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return {
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value: score,
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reason,
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factors
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};
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}
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/**
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* Known field mappings with exact matches
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*/
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private static readonly EXACT_FIELD_MAPPINGS: Record<string, string[]> = {
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'github': ['owner', 'repository', 'user', 'organization'],
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'googlesheets': ['sheetId', 'documentId', 'spreadsheetId'],
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'googledrive': ['fileId', 'folderId', 'driveId'],
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'slack': ['channel', 'user', 'channelId', 'userId'],
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'notion': ['databaseId', 'pageId', 'blockId'],
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'airtable': ['baseId', 'tableId', 'viewId']
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};
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private static checkExactFieldMatch(fieldName: string, nodeType: string): boolean {
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const nodeBase = nodeType.split('.').pop()?.toLowerCase() || '';
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for (const [pattern, fields] of Object.entries(this.EXACT_FIELD_MAPPINGS)) {
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if (nodeBase === pattern || nodeBase.startsWith(`${pattern}-`)) {
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return fields.includes(fieldName);
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}
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}
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return false;
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}
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/**
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* Common patterns in field names that suggest resource locators
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*/
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private static readonly FIELD_PATTERNS = [
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/^.*Id$/i, // ends with Id
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/^.*Ids$/i, // ends with Ids
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/^.*Key$/i, // ends with Key
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/^.*Name$/i, // ends with Name
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/^.*Path$/i, // ends with Path
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/^.*Url$/i, // ends with Url
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/^.*Uri$/i, // ends with Uri
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/^(table|database|collection|bucket|folder|file|document|sheet|board|project|issue|user|channel|team|organization|repository|owner)$/i
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];
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private static checkFieldPattern(fieldName: string): boolean {
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return this.FIELD_PATTERNS.some(pattern => pattern.test(fieldName));
|
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}
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||||
|
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/**
|
||||
* Check if the value looks like it contains identifiers
|
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*/
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private static checkValuePattern(value: string): boolean {
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// Remove = prefix if present for analysis
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const content = value.startsWith('=') ? value.substring(1) : value;
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|
||||
// Skip if not an expression
|
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if (!content.includes('{{') || !content.includes('}}')) {
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return false;
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}
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|
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// Check for patterns that suggest IDs or resource references
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const patterns = [
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/\{\{.*\.(id|Id|ID|key|Key|name|Name|path|Path|url|Url|uri|Uri).*\}\}/i,
|
||||
/\{\{.*_(id|Id|ID|key|Key|name|Name|path|Path|url|Url|uri|Uri).*\}\}/i,
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/\{\{.*(id|Id|ID|key|Key|name|Name|path|Path|url|Url|uri|Uri).*\}\}/i
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];
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return patterns.some(pattern => pattern.test(content));
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}
|
||||
|
||||
/**
|
||||
* Node categories that commonly use resource locators
|
||||
*/
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||||
private static readonly RESOURCE_HEAVY_NODES = [
|
||||
'github', 'gitlab', 'bitbucket', // Version control
|
||||
'googlesheets', 'googledrive', 'dropbox', // Cloud storage
|
||||
'slack', 'discord', 'telegram', // Communication
|
||||
'notion', 'airtable', 'baserow', // Databases
|
||||
'jira', 'asana', 'trello', 'monday', // Project management
|
||||
'salesforce', 'hubspot', 'pipedrive', // CRM
|
||||
'stripe', 'paypal', 'square', // Payment
|
||||
'aws', 'gcp', 'azure', // Cloud providers
|
||||
'mysql', 'postgres', 'mongodb', 'redis' // Databases
|
||||
];
|
||||
|
||||
private static checkNodeCategory(nodeType: string): boolean {
|
||||
const nodeBase = nodeType.split('.').pop()?.toLowerCase() || '';
|
||||
|
||||
return this.RESOURCE_HEAVY_NODES.some(category =>
|
||||
nodeBase.includes(category)
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get confidence level as a string
|
||||
*/
|
||||
static getConfidenceLevel(score: number): 'high' | 'medium' | 'low' | 'very-low' {
|
||||
if (score >= 0.8) return 'high';
|
||||
if (score >= 0.5) return 'medium';
|
||||
if (score >= 0.3) return 'low';
|
||||
return 'very-low';
|
||||
}
|
||||
|
||||
/**
|
||||
* Should apply recommendation based on confidence and threshold
|
||||
*/
|
||||
static shouldApplyRecommendation(
|
||||
score: number,
|
||||
threshold: 'strict' | 'normal' | 'relaxed' = 'normal'
|
||||
): boolean {
|
||||
const thresholds = {
|
||||
strict: 0.8, // Only apply high confidence recommendations
|
||||
normal: 0.5, // Apply medium and high confidence
|
||||
relaxed: 0.3 // Apply low, medium, and high confidence
|
||||
};
|
||||
|
||||
return score >= thresholds[threshold];
|
||||
}
|
||||
}
|
||||
340
src/services/expression-format-validator.ts
Normal file
340
src/services/expression-format-validator.ts
Normal file
@@ -0,0 +1,340 @@
|
||||
/**
|
||||
* Expression Format Validator for n8n expressions
|
||||
*
|
||||
* Combines universal expression validation with node-specific intelligence
|
||||
* to provide comprehensive expression format validation. Uses the
|
||||
* UniversalExpressionValidator for 100% reliable base validation and adds
|
||||
* node-specific resource locator detection on top.
|
||||
*/
|
||||
|
||||
import { UniversalExpressionValidator, UniversalValidationResult } from './universal-expression-validator';
|
||||
import { ConfidenceScorer } from './confidence-scorer';
|
||||
|
||||
export interface ExpressionFormatIssue {
|
||||
fieldPath: string;
|
||||
currentValue: any;
|
||||
correctedValue: any;
|
||||
issueType: 'missing-prefix' | 'needs-resource-locator' | 'invalid-rl-structure' | 'mixed-format';
|
||||
explanation: string;
|
||||
severity: 'error' | 'warning';
|
||||
confidence?: number; // 0.0 to 1.0, only for node-specific recommendations
|
||||
}
|
||||
|
||||
export interface ResourceLocatorField {
|
||||
__rl: true;
|
||||
value: string;
|
||||
mode: string;
|
||||
}
|
||||
|
||||
export interface ValidationContext {
|
||||
nodeType: string;
|
||||
nodeName: string;
|
||||
nodeId?: string;
|
||||
}
|
||||
|
||||
export class ExpressionFormatValidator {
|
||||
private static readonly VALID_RL_MODES = ['id', 'url', 'expression', 'name', 'list'] as const;
|
||||
private static readonly MAX_RECURSION_DEPTH = 100;
|
||||
private static readonly EXPRESSION_PREFIX = '='; // Keep for resource locator generation
|
||||
|
||||
/**
|
||||
* Known fields that commonly use resource locator format
|
||||
* Map of node type patterns to field names
|
||||
*/
|
||||
private static readonly RESOURCE_LOCATOR_FIELDS: Record<string, string[]> = {
|
||||
'github': ['owner', 'repository', 'user', 'organization'],
|
||||
'googleSheets': ['sheetId', 'documentId', 'spreadsheetId', 'rangeDefinition'],
|
||||
'googleDrive': ['fileId', 'folderId', 'driveId'],
|
||||
'slack': ['channel', 'user', 'channelId', 'userId', 'teamId'],
|
||||
'notion': ['databaseId', 'pageId', 'blockId'],
|
||||
'airtable': ['baseId', 'tableId', 'viewId'],
|
||||
'monday': ['boardId', 'itemId', 'groupId'],
|
||||
'hubspot': ['contactId', 'companyId', 'dealId'],
|
||||
'salesforce': ['recordId', 'objectName'],
|
||||
'jira': ['projectKey', 'issueKey', 'boardId'],
|
||||
'gitlab': ['projectId', 'mergeRequestId', 'issueId'],
|
||||
'mysql': ['table', 'database', 'schema'],
|
||||
'postgres': ['table', 'database', 'schema'],
|
||||
'mongodb': ['collection', 'database'],
|
||||
's3': ['bucketName', 'key', 'fileName'],
|
||||
'ftp': ['path', 'fileName'],
|
||||
'ssh': ['path', 'fileName'],
|
||||
'redis': ['key'],
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Determine if a field should use resource locator format based on node type and field name
|
||||
*/
|
||||
private static shouldUseResourceLocator(fieldName: string, nodeType: string): boolean {
|
||||
// Extract the base node type (e.g., 'github' from 'n8n-nodes-base.github')
|
||||
const nodeBase = nodeType.split('.').pop()?.toLowerCase() || '';
|
||||
|
||||
// Check if this node type has resource locator fields
|
||||
for (const [pattern, fields] of Object.entries(this.RESOURCE_LOCATOR_FIELDS)) {
|
||||
// Use exact match or prefix matching for precision
|
||||
// This prevents false positives like 'postgresqlAdvanced' matching 'postgres'
|
||||
if ((nodeBase === pattern || nodeBase.startsWith(`${pattern}-`)) && fields.includes(fieldName)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
// Don't apply resource locator to generic fields
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if a value is a valid resource locator object
|
||||
*/
|
||||
private static isResourceLocator(value: any): value is ResourceLocatorField {
|
||||
if (typeof value !== 'object' || value === null || value.__rl !== true) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!('value' in value) || !('mode' in value)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Validate mode is one of the allowed values
|
||||
if (typeof value.mode !== 'string' || !this.VALID_RL_MODES.includes(value.mode as any)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate the corrected value for an expression
|
||||
*/
|
||||
private static generateCorrection(
|
||||
value: string,
|
||||
needsResourceLocator: boolean
|
||||
): any {
|
||||
const correctedValue = value.startsWith(this.EXPRESSION_PREFIX)
|
||||
? value
|
||||
: `${this.EXPRESSION_PREFIX}${value}`;
|
||||
|
||||
if (needsResourceLocator) {
|
||||
return {
|
||||
__rl: true,
|
||||
value: correctedValue,
|
||||
mode: 'expression'
|
||||
};
|
||||
}
|
||||
|
||||
return correctedValue;
|
||||
}
|
||||
|
||||
/**
|
||||
* Validate and fix expression format for a single value
|
||||
*/
|
||||
static validateAndFix(
|
||||
value: any,
|
||||
fieldPath: string,
|
||||
context: ValidationContext
|
||||
): ExpressionFormatIssue | null {
|
||||
// Skip non-string values unless they're resource locators
|
||||
if (typeof value !== 'string' && !this.isResourceLocator(value)) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// Handle resource locator objects
|
||||
if (this.isResourceLocator(value)) {
|
||||
// Use universal validator for the value inside RL
|
||||
const universalResults = UniversalExpressionValidator.validate(value.value);
|
||||
const invalidResult = universalResults.find(r => !r.isValid && r.needsPrefix);
|
||||
|
||||
if (invalidResult) {
|
||||
return {
|
||||
fieldPath,
|
||||
currentValue: value,
|
||||
correctedValue: {
|
||||
...value,
|
||||
value: UniversalExpressionValidator.getCorrectedValue(value.value)
|
||||
},
|
||||
issueType: 'missing-prefix',
|
||||
explanation: `Resource locator value: ${invalidResult.explanation}`,
|
||||
severity: 'error'
|
||||
};
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
// First, use universal validator for 100% reliable validation
|
||||
const universalResults = UniversalExpressionValidator.validate(value);
|
||||
const invalidResults = universalResults.filter(r => !r.isValid);
|
||||
|
||||
// If universal validator found issues, report them
|
||||
if (invalidResults.length > 0) {
|
||||
// Prioritize prefix issues
|
||||
const prefixIssue = invalidResults.find(r => r.needsPrefix);
|
||||
if (prefixIssue) {
|
||||
// Check if this field should use resource locator format with confidence scoring
|
||||
const fieldName = fieldPath.split('.').pop() || '';
|
||||
const confidenceScore = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
fieldName,
|
||||
context.nodeType,
|
||||
value
|
||||
);
|
||||
|
||||
// Only suggest resource locator for high confidence matches when there's a prefix issue
|
||||
if (confidenceScore.value >= 0.8) {
|
||||
return {
|
||||
fieldPath,
|
||||
currentValue: value,
|
||||
correctedValue: this.generateCorrection(value, true),
|
||||
issueType: 'needs-resource-locator',
|
||||
explanation: `Field '${fieldName}' contains expression but needs resource locator format with '${this.EXPRESSION_PREFIX}' prefix for evaluation.`,
|
||||
severity: 'error',
|
||||
confidence: confidenceScore.value
|
||||
};
|
||||
} else {
|
||||
return {
|
||||
fieldPath,
|
||||
currentValue: value,
|
||||
correctedValue: UniversalExpressionValidator.getCorrectedValue(value),
|
||||
issueType: 'missing-prefix',
|
||||
explanation: prefixIssue.explanation,
|
||||
severity: 'error'
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
// Report other validation issues
|
||||
const firstIssue = invalidResults[0];
|
||||
return {
|
||||
fieldPath,
|
||||
currentValue: value,
|
||||
correctedValue: value,
|
||||
issueType: 'mixed-format',
|
||||
explanation: firstIssue.explanation,
|
||||
severity: 'error'
|
||||
};
|
||||
}
|
||||
|
||||
// Universal validation passed, now check for node-specific improvements
|
||||
// Only if the value has expressions
|
||||
const hasExpression = universalResults.some(r => r.hasExpression);
|
||||
if (hasExpression && typeof value === 'string') {
|
||||
const fieldName = fieldPath.split('.').pop() || '';
|
||||
const confidenceScore = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
fieldName,
|
||||
context.nodeType,
|
||||
value
|
||||
);
|
||||
|
||||
// Only suggest resource locator for medium-high confidence as a warning
|
||||
if (confidenceScore.value >= 0.5) {
|
||||
// Has prefix but should use resource locator format
|
||||
return {
|
||||
fieldPath,
|
||||
currentValue: value,
|
||||
correctedValue: this.generateCorrection(value, true),
|
||||
issueType: 'needs-resource-locator',
|
||||
explanation: `Field '${fieldName}' should use resource locator format for better compatibility. (Confidence: ${Math.round(confidenceScore.value * 100)}%)`,
|
||||
severity: 'warning',
|
||||
confidence: confidenceScore.value
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Validate all expressions in a node's parameters recursively
|
||||
*/
|
||||
static validateNodeParameters(
|
||||
parameters: any,
|
||||
context: ValidationContext
|
||||
): ExpressionFormatIssue[] {
|
||||
const issues: ExpressionFormatIssue[] = [];
|
||||
const visited = new WeakSet();
|
||||
|
||||
this.validateRecursive(parameters, '', context, issues, visited);
|
||||
|
||||
return issues;
|
||||
}
|
||||
|
||||
/**
|
||||
* Recursively validate parameters for expression format issues
|
||||
*/
|
||||
private static validateRecursive(
|
||||
obj: any,
|
||||
path: string,
|
||||
context: ValidationContext,
|
||||
issues: ExpressionFormatIssue[],
|
||||
visited: WeakSet<object>,
|
||||
depth = 0
|
||||
): void {
|
||||
// Prevent excessive recursion
|
||||
if (depth > this.MAX_RECURSION_DEPTH) {
|
||||
issues.push({
|
||||
fieldPath: path,
|
||||
currentValue: obj,
|
||||
correctedValue: obj,
|
||||
issueType: 'mixed-format',
|
||||
explanation: `Maximum recursion depth (${this.MAX_RECURSION_DEPTH}) exceeded. Object may have circular references or be too deeply nested.`,
|
||||
severity: 'warning'
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
// Handle circular references
|
||||
if (obj && typeof obj === 'object') {
|
||||
if (visited.has(obj)) return;
|
||||
visited.add(obj);
|
||||
}
|
||||
|
||||
// Check current value
|
||||
const issue = this.validateAndFix(obj, path, context);
|
||||
if (issue) {
|
||||
issues.push(issue);
|
||||
}
|
||||
|
||||
// Recurse into objects and arrays
|
||||
if (Array.isArray(obj)) {
|
||||
obj.forEach((item, index) => {
|
||||
const newPath = path ? `${path}[${index}]` : `[${index}]`;
|
||||
this.validateRecursive(item, newPath, context, issues, visited, depth + 1);
|
||||
});
|
||||
} else if (obj && typeof obj === 'object') {
|
||||
// Skip resource locator internals if already validated
|
||||
if (this.isResourceLocator(obj)) {
|
||||
return;
|
||||
}
|
||||
|
||||
Object.entries(obj).forEach(([key, value]) => {
|
||||
// Skip special keys
|
||||
if (key.startsWith('__')) return;
|
||||
|
||||
const newPath = path ? `${path}.${key}` : key;
|
||||
this.validateRecursive(value, newPath, context, issues, visited, depth + 1);
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Generate a detailed error message with examples
|
||||
*/
|
||||
static formatErrorMessage(issue: ExpressionFormatIssue, context: ValidationContext): string {
|
||||
let message = `Expression format ${issue.severity} in node '${context.nodeName}':\n`;
|
||||
message += `Field '${issue.fieldPath}' ${issue.explanation}\n\n`;
|
||||
|
||||
message += `Current (incorrect):\n`;
|
||||
if (typeof issue.currentValue === 'string') {
|
||||
message += `"${issue.fieldPath}": "${issue.currentValue}"\n\n`;
|
||||
} else {
|
||||
message += `"${issue.fieldPath}": ${JSON.stringify(issue.currentValue, null, 2)}\n\n`;
|
||||
}
|
||||
|
||||
message += `Fixed (correct):\n`;
|
||||
if (typeof issue.correctedValue === 'string') {
|
||||
message += `"${issue.fieldPath}": "${issue.correctedValue}"`;
|
||||
} else {
|
||||
message += `"${issue.fieldPath}": ${JSON.stringify(issue.correctedValue, null, 2)}`;
|
||||
}
|
||||
|
||||
return message;
|
||||
}
|
||||
}
|
||||
272
src/services/universal-expression-validator.ts
Normal file
272
src/services/universal-expression-validator.ts
Normal file
@@ -0,0 +1,272 @@
|
||||
/**
|
||||
* Universal Expression Validator
|
||||
*
|
||||
* Validates n8n expressions based on universal rules that apply to ALL expressions,
|
||||
* regardless of node type or field. This provides 100% reliable detection of
|
||||
* expression format issues without needing node-specific knowledge.
|
||||
*/
|
||||
|
||||
export interface UniversalValidationResult {
|
||||
isValid: boolean;
|
||||
hasExpression: boolean;
|
||||
needsPrefix: boolean;
|
||||
isMixedContent: boolean;
|
||||
confidence: 1.0; // Universal rules have 100% confidence
|
||||
suggestion?: string;
|
||||
explanation: string;
|
||||
}
|
||||
|
||||
export class UniversalExpressionValidator {
|
||||
private static readonly EXPRESSION_PATTERN = /\{\{[\s\S]+?\}\}/;
|
||||
private static readonly EXPRESSION_PREFIX = '=';
|
||||
|
||||
/**
|
||||
* Universal Rule 1: Any field containing {{ }} MUST have = prefix
|
||||
* This is an absolute rule in n8n - no exceptions
|
||||
*/
|
||||
static validateExpressionPrefix(value: any): UniversalValidationResult {
|
||||
// Only validate strings
|
||||
if (typeof value !== 'string') {
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: false,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: 'Not a string value'
|
||||
};
|
||||
}
|
||||
|
||||
const hasExpression = this.EXPRESSION_PATTERN.test(value);
|
||||
|
||||
if (!hasExpression) {
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: false,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: 'No n8n expression found'
|
||||
};
|
||||
}
|
||||
|
||||
const hasPrefix = value.startsWith(this.EXPRESSION_PREFIX);
|
||||
const isMixedContent = this.hasMixedContent(value);
|
||||
|
||||
if (!hasPrefix) {
|
||||
return {
|
||||
isValid: false,
|
||||
hasExpression: true,
|
||||
needsPrefix: true,
|
||||
isMixedContent,
|
||||
confidence: 1.0,
|
||||
suggestion: `${this.EXPRESSION_PREFIX}${value}`,
|
||||
explanation: isMixedContent
|
||||
? 'Mixed literal text and expression requires = prefix for expression evaluation'
|
||||
: 'Expression requires = prefix to be evaluated'
|
||||
};
|
||||
}
|
||||
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: true,
|
||||
needsPrefix: false,
|
||||
isMixedContent,
|
||||
confidence: 1.0,
|
||||
explanation: 'Expression is properly formatted with = prefix'
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if a string contains both literal text and expressions
|
||||
* Examples:
|
||||
* - "Hello {{ $json.name }}" -> mixed content
|
||||
* - "{{ $json.value }}" -> pure expression
|
||||
* - "https://api.com/{{ $json.id }}" -> mixed content
|
||||
*/
|
||||
private static hasMixedContent(value: string): boolean {
|
||||
// Remove the = prefix if present for analysis
|
||||
const content = value.startsWith(this.EXPRESSION_PREFIX)
|
||||
? value.substring(1)
|
||||
: value;
|
||||
|
||||
// Check if there's any content outside of {{ }}
|
||||
const withoutExpressions = content.replace(/\{\{[\s\S]+?\}\}/g, '');
|
||||
return withoutExpressions.trim().length > 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Universal Rule 2: Expression syntax validation
|
||||
* Check for common syntax errors that prevent evaluation
|
||||
*/
|
||||
static validateExpressionSyntax(value: string): UniversalValidationResult {
|
||||
// First, check if there's any expression pattern at all
|
||||
const hasAnyBrackets = value.includes('{{') || value.includes('}}');
|
||||
|
||||
if (!hasAnyBrackets) {
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: false,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: 'No expression to validate'
|
||||
};
|
||||
}
|
||||
|
||||
// Check for unclosed brackets in the entire string
|
||||
const openCount = (value.match(/\{\{/g) || []).length;
|
||||
const closeCount = (value.match(/\}\}/g) || []).length;
|
||||
|
||||
if (openCount !== closeCount) {
|
||||
return {
|
||||
isValid: false,
|
||||
hasExpression: true,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: `Unmatched expression brackets: ${openCount} opening, ${closeCount} closing`
|
||||
};
|
||||
}
|
||||
|
||||
// Extract properly matched expressions for further validation
|
||||
const expressions = value.match(/\{\{[\s\S]+?\}\}/g) || [];
|
||||
|
||||
for (const expr of expressions) {
|
||||
// Check for empty expressions
|
||||
const content = expr.slice(2, -2).trim();
|
||||
if (!content) {
|
||||
return {
|
||||
isValid: false,
|
||||
hasExpression: true,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: 'Empty expression {{ }} is not valid'
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: expressions.length > 0,
|
||||
needsPrefix: false,
|
||||
isMixedContent: this.hasMixedContent(value),
|
||||
confidence: 1.0,
|
||||
explanation: 'Expression syntax is valid'
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Universal Rule 3: Common n8n expression patterns
|
||||
* Validate against known n8n expression patterns
|
||||
*/
|
||||
static validateCommonPatterns(value: string): UniversalValidationResult {
|
||||
if (!this.EXPRESSION_PATTERN.test(value)) {
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: false,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: 'No expression to validate'
|
||||
};
|
||||
}
|
||||
|
||||
const expressions = value.match(/\{\{[\s\S]+?\}\}/g) || [];
|
||||
const warnings: string[] = [];
|
||||
|
||||
for (const expr of expressions) {
|
||||
const content = expr.slice(2, -2).trim();
|
||||
|
||||
// Check for common mistakes
|
||||
if (content.includes('${') && content.includes('}')) {
|
||||
warnings.push(`Template literal syntax \${} found - use n8n syntax instead: ${expr}`);
|
||||
}
|
||||
|
||||
if (content.startsWith('=')) {
|
||||
warnings.push(`Double prefix detected in expression: ${expr}`);
|
||||
}
|
||||
|
||||
if (content.includes('{{') || content.includes('}}')) {
|
||||
warnings.push(`Nested brackets detected: ${expr}`);
|
||||
}
|
||||
}
|
||||
|
||||
if (warnings.length > 0) {
|
||||
return {
|
||||
isValid: false,
|
||||
hasExpression: true,
|
||||
needsPrefix: false,
|
||||
isMixedContent: false,
|
||||
confidence: 1.0,
|
||||
explanation: warnings.join('; ')
|
||||
};
|
||||
}
|
||||
|
||||
return {
|
||||
isValid: true,
|
||||
hasExpression: true,
|
||||
needsPrefix: false,
|
||||
isMixedContent: this.hasMixedContent(value),
|
||||
confidence: 1.0,
|
||||
explanation: 'Expression patterns are valid'
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform all universal validations
|
||||
*/
|
||||
static validate(value: any): UniversalValidationResult[] {
|
||||
const results: UniversalValidationResult[] = [];
|
||||
|
||||
// Run all universal validators
|
||||
const prefixResult = this.validateExpressionPrefix(value);
|
||||
if (!prefixResult.isValid) {
|
||||
results.push(prefixResult);
|
||||
}
|
||||
|
||||
if (typeof value === 'string') {
|
||||
const syntaxResult = this.validateExpressionSyntax(value);
|
||||
if (!syntaxResult.isValid) {
|
||||
results.push(syntaxResult);
|
||||
}
|
||||
|
||||
const patternResult = this.validateCommonPatterns(value);
|
||||
if (!patternResult.isValid) {
|
||||
results.push(patternResult);
|
||||
}
|
||||
}
|
||||
|
||||
// If no issues found, return a success result
|
||||
if (results.length === 0) {
|
||||
results.push({
|
||||
isValid: true,
|
||||
hasExpression: prefixResult.hasExpression,
|
||||
needsPrefix: false,
|
||||
isMixedContent: prefixResult.isMixedContent,
|
||||
confidence: 1.0,
|
||||
explanation: prefixResult.hasExpression
|
||||
? 'Expression is valid'
|
||||
: 'No expression found'
|
||||
});
|
||||
}
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a corrected version of the value
|
||||
*/
|
||||
static getCorrectedValue(value: string): string {
|
||||
if (!this.EXPRESSION_PATTERN.test(value)) {
|
||||
return value;
|
||||
}
|
||||
|
||||
if (!value.startsWith(this.EXPRESSION_PREFIX)) {
|
||||
return `${this.EXPRESSION_PREFIX}${value}`;
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
}
|
||||
@@ -6,6 +6,7 @@
|
||||
import { NodeRepository } from '../database/node-repository';
|
||||
import { EnhancedConfigValidator } from './enhanced-config-validator';
|
||||
import { ExpressionValidator } from './expression-validator';
|
||||
import { ExpressionFormatValidator } from './expression-format-validator';
|
||||
import { Logger } from '../utils/logger';
|
||||
const logger = new Logger({ prefix: '[WorkflowValidator]' });
|
||||
|
||||
@@ -991,6 +992,39 @@ export class WorkflowValidator {
|
||||
message: `Expression warning: ${warning}`
|
||||
});
|
||||
});
|
||||
|
||||
// Validate expression format (check for missing = prefix and resource locator format)
|
||||
const formatContext = {
|
||||
nodeType: node.type,
|
||||
nodeName: node.name,
|
||||
nodeId: node.id
|
||||
};
|
||||
|
||||
const formatIssues = ExpressionFormatValidator.validateNodeParameters(
|
||||
node.parameters,
|
||||
formatContext
|
||||
);
|
||||
|
||||
// Add format errors and warnings
|
||||
formatIssues.forEach(issue => {
|
||||
const formattedMessage = ExpressionFormatValidator.formatErrorMessage(issue, formatContext);
|
||||
|
||||
if (issue.severity === 'error') {
|
||||
result.errors.push({
|
||||
type: 'error',
|
||||
nodeId: node.id,
|
||||
nodeName: node.name,
|
||||
message: formattedMessage
|
||||
});
|
||||
} else {
|
||||
result.warnings.push({
|
||||
type: 'warning',
|
||||
nodeId: node.id,
|
||||
nodeName: node.name,
|
||||
message: formattedMessage
|
||||
});
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -1,6 +1,16 @@
|
||||
// n8n API Types - Ported from n8n-manager-for-ai-agents
|
||||
// These types define the structure of n8n API requests and responses
|
||||
|
||||
// Resource Locator Types
|
||||
export interface ResourceLocatorValue {
|
||||
__rl: true;
|
||||
value: string;
|
||||
mode: 'id' | 'url' | 'expression' | string;
|
||||
}
|
||||
|
||||
// Expression Format Types
|
||||
export type ExpressionValue = string | ResourceLocatorValue;
|
||||
|
||||
// Workflow Node Types
|
||||
export interface WorkflowNode {
|
||||
id: string;
|
||||
|
||||
148
tests/unit/services/confidence-scorer.test.ts
Normal file
148
tests/unit/services/confidence-scorer.test.ts
Normal file
@@ -0,0 +1,148 @@
|
||||
import { describe, it, expect } from 'vitest';
|
||||
import { ConfidenceScorer } from '../../../src/services/confidence-scorer';
|
||||
|
||||
describe('ConfidenceScorer', () => {
|
||||
describe('scoreResourceLocatorRecommendation', () => {
|
||||
it('should give high confidence for exact field matches', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'owner',
|
||||
'n8n-nodes-base.github',
|
||||
'={{ $json.owner }}'
|
||||
);
|
||||
|
||||
expect(score.value).toBeGreaterThanOrEqual(0.5);
|
||||
expect(score.factors.find(f => f.name === 'exact-field-match')?.matched).toBe(true);
|
||||
});
|
||||
|
||||
it('should give medium confidence for field pattern matches', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'customerId',
|
||||
'n8n-nodes-base.customApi',
|
||||
'={{ $json.id }}'
|
||||
);
|
||||
|
||||
expect(score.value).toBeGreaterThan(0);
|
||||
expect(score.value).toBeLessThan(0.8);
|
||||
expect(score.factors.find(f => f.name === 'field-pattern')?.matched).toBe(true);
|
||||
});
|
||||
|
||||
it('should give low confidence for unrelated fields', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'message',
|
||||
'n8n-nodes-base.emailSend',
|
||||
'={{ $json.content }}'
|
||||
);
|
||||
|
||||
expect(score.value).toBeLessThan(0.3);
|
||||
});
|
||||
|
||||
it('should consider value patterns', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'target',
|
||||
'n8n-nodes-base.httpRequest',
|
||||
'={{ $json.userId }}'
|
||||
);
|
||||
|
||||
const valueFactor = score.factors.find(f => f.name === 'value-pattern');
|
||||
expect(valueFactor?.matched).toBe(true);
|
||||
});
|
||||
|
||||
it('should consider node category', () => {
|
||||
const scoreGitHub = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'field',
|
||||
'n8n-nodes-base.github',
|
||||
'={{ $json.value }}'
|
||||
);
|
||||
|
||||
const scoreEmail = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'field',
|
||||
'n8n-nodes-base.emailSend',
|
||||
'={{ $json.value }}'
|
||||
);
|
||||
|
||||
expect(scoreGitHub.value).toBeGreaterThan(scoreEmail.value);
|
||||
});
|
||||
|
||||
it('should handle GitHub repository field with high confidence', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'repository',
|
||||
'n8n-nodes-base.github',
|
||||
'={{ $vars.GITHUB_REPO }}'
|
||||
);
|
||||
|
||||
expect(score.value).toBeGreaterThanOrEqual(0.5);
|
||||
expect(ConfidenceScorer.getConfidenceLevel(score.value)).not.toBe('very-low');
|
||||
});
|
||||
|
||||
it('should handle Slack channel field with high confidence', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'channel',
|
||||
'n8n-nodes-base.slack',
|
||||
'={{ $json.channelId }}'
|
||||
);
|
||||
|
||||
expect(score.value).toBeGreaterThanOrEqual(0.5);
|
||||
});
|
||||
});
|
||||
|
||||
describe('getConfidenceLevel', () => {
|
||||
it('should return correct confidence levels', () => {
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.9)).toBe('high');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.8)).toBe('high');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.6)).toBe('medium');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.5)).toBe('medium');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.4)).toBe('low');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.3)).toBe('low');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0.2)).toBe('very-low');
|
||||
expect(ConfidenceScorer.getConfidenceLevel(0)).toBe('very-low');
|
||||
});
|
||||
});
|
||||
|
||||
describe('shouldApplyRecommendation', () => {
|
||||
it('should apply based on threshold', () => {
|
||||
// Strict threshold (0.8)
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.9, 'strict')).toBe(true);
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.7, 'strict')).toBe(false);
|
||||
|
||||
// Normal threshold (0.5)
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.6, 'normal')).toBe(true);
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.4, 'normal')).toBe(false);
|
||||
|
||||
// Relaxed threshold (0.3)
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.4, 'relaxed')).toBe(true);
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.2, 'relaxed')).toBe(false);
|
||||
});
|
||||
|
||||
it('should use normal threshold by default', () => {
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.6)).toBe(true);
|
||||
expect(ConfidenceScorer.shouldApplyRecommendation(0.4)).toBe(false);
|
||||
});
|
||||
});
|
||||
|
||||
describe('confidence factors', () => {
|
||||
it('should include all expected factors', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'testField',
|
||||
'n8n-nodes-base.testNode',
|
||||
'={{ $json.test }}'
|
||||
);
|
||||
|
||||
expect(score.factors).toHaveLength(4);
|
||||
expect(score.factors.map(f => f.name)).toContain('exact-field-match');
|
||||
expect(score.factors.map(f => f.name)).toContain('field-pattern');
|
||||
expect(score.factors.map(f => f.name)).toContain('value-pattern');
|
||||
expect(score.factors.map(f => f.name)).toContain('node-category');
|
||||
});
|
||||
|
||||
it('should have reasonable weights', () => {
|
||||
const score = ConfidenceScorer.scoreResourceLocatorRecommendation(
|
||||
'testField',
|
||||
'n8n-nodes-base.testNode',
|
||||
'={{ $json.test }}'
|
||||
);
|
||||
|
||||
const totalWeight = score.factors.reduce((sum, f) => sum + f.weight, 0);
|
||||
expect(totalWeight).toBeCloseTo(1.0, 1);
|
||||
});
|
||||
});
|
||||
});
|
||||
364
tests/unit/services/expression-format-validator.test.ts
Normal file
364
tests/unit/services/expression-format-validator.test.ts
Normal file
@@ -0,0 +1,364 @@
|
||||
import { describe, it, expect } from 'vitest';
|
||||
import { ExpressionFormatValidator } from '../../../src/services/expression-format-validator';
|
||||
|
||||
describe('ExpressionFormatValidator', () => {
|
||||
describe('validateAndFix', () => {
|
||||
const context = {
|
||||
nodeType: 'n8n-nodes-base.httpRequest',
|
||||
nodeName: 'HTTP Request',
|
||||
nodeId: 'test-id-1'
|
||||
};
|
||||
|
||||
describe('Simple string expressions', () => {
|
||||
it('should detect missing = prefix for expression', () => {
|
||||
const value = '{{ $env.API_KEY }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'apiKey', context);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('missing-prefix');
|
||||
expect(issue?.correctedValue).toBe('={{ $env.API_KEY }}');
|
||||
expect(issue?.severity).toBe('error');
|
||||
});
|
||||
|
||||
it('should accept expression with = prefix', () => {
|
||||
const value = '={{ $env.API_KEY }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'apiKey', context);
|
||||
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should detect mixed content without prefix', () => {
|
||||
const value = 'Bearer {{ $env.TOKEN }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'authorization', context);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('missing-prefix');
|
||||
expect(issue?.correctedValue).toBe('=Bearer {{ $env.TOKEN }}');
|
||||
});
|
||||
|
||||
it('should accept mixed content with prefix', () => {
|
||||
const value = '=Bearer {{ $env.TOKEN }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'authorization', context);
|
||||
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should ignore plain strings without expressions', () => {
|
||||
const value = 'https://api.example.com';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'url', context);
|
||||
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
});
|
||||
|
||||
describe('Resource Locator fields', () => {
|
||||
const githubContext = {
|
||||
nodeType: 'n8n-nodes-base.github',
|
||||
nodeName: 'GitHub',
|
||||
nodeId: 'github-1'
|
||||
};
|
||||
|
||||
it('should detect expression in owner field needing resource locator', () => {
|
||||
const value = '{{ $vars.GITHUB_OWNER }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'owner', githubContext);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('needs-resource-locator');
|
||||
expect(issue?.correctedValue).toEqual({
|
||||
__rl: true,
|
||||
value: '={{ $vars.GITHUB_OWNER }}',
|
||||
mode: 'expression'
|
||||
});
|
||||
expect(issue?.severity).toBe('error');
|
||||
});
|
||||
|
||||
it('should accept resource locator with expression', () => {
|
||||
const value = {
|
||||
__rl: true,
|
||||
value: '={{ $vars.GITHUB_OWNER }}',
|
||||
mode: 'expression'
|
||||
};
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'owner', githubContext);
|
||||
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should detect missing prefix in resource locator value', () => {
|
||||
const value = {
|
||||
__rl: true,
|
||||
value: '{{ $vars.GITHUB_OWNER }}',
|
||||
mode: 'expression'
|
||||
};
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'owner', githubContext);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('missing-prefix');
|
||||
expect(issue?.correctedValue.value).toBe('={{ $vars.GITHUB_OWNER }}');
|
||||
});
|
||||
|
||||
it('should warn if expression has prefix but should use RL format', () => {
|
||||
const value = '={{ $vars.GITHUB_OWNER }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'owner', githubContext);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('needs-resource-locator');
|
||||
expect(issue?.severity).toBe('warning');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Multiple expressions', () => {
|
||||
it('should detect multiple expressions without prefix', () => {
|
||||
const value = '{{ $json.first }} - {{ $json.last }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'fullName', context);
|
||||
|
||||
expect(issue).toBeTruthy();
|
||||
expect(issue?.issueType).toBe('missing-prefix');
|
||||
expect(issue?.correctedValue).toBe('={{ $json.first }} - {{ $json.last }}');
|
||||
});
|
||||
|
||||
it('should accept multiple expressions with prefix', () => {
|
||||
const value = '={{ $json.first }} - {{ $json.last }}';
|
||||
const issue = ExpressionFormatValidator.validateAndFix(value, 'fullName', context);
|
||||
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
});
|
||||
|
||||
describe('Edge cases', () => {
|
||||
it('should handle null values', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix(null, 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should handle undefined values', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix(undefined, 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should handle empty strings', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix('', 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should handle numbers', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix(42, 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should handle booleans', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix(true, 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
|
||||
it('should handle arrays', () => {
|
||||
const issue = ExpressionFormatValidator.validateAndFix(['item1', 'item2'], 'field', context);
|
||||
expect(issue).toBeNull();
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe('validateNodeParameters', () => {
|
||||
const context = {
|
||||
nodeType: 'n8n-nodes-base.emailSend',
|
||||
nodeName: 'Send Email',
|
||||
nodeId: 'email-1'
|
||||
};
|
||||
|
||||
it('should validate all parameters recursively', () => {
|
||||
const parameters = {
|
||||
fromEmail: '{{ $env.SENDER_EMAIL }}',
|
||||
toEmail: 'user@example.com',
|
||||
subject: 'Test {{ $json.type }}',
|
||||
body: {
|
||||
html: '<p>Hello {{ $json.name }}</p>',
|
||||
text: 'Hello {{ $json.name }}'
|
||||
},
|
||||
options: {
|
||||
replyTo: '={{ $env.REPLY_EMAIL }}'
|
||||
}
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
expect(issues).toHaveLength(4);
|
||||
expect(issues.map(i => i.fieldPath)).toContain('fromEmail');
|
||||
expect(issues.map(i => i.fieldPath)).toContain('subject');
|
||||
expect(issues.map(i => i.fieldPath)).toContain('body.html');
|
||||
expect(issues.map(i => i.fieldPath)).toContain('body.text');
|
||||
});
|
||||
|
||||
it('should handle arrays with expressions', () => {
|
||||
const parameters = {
|
||||
recipients: [
|
||||
'{{ $json.email1 }}',
|
||||
'static@example.com',
|
||||
'={{ $json.email2 }}'
|
||||
]
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
expect(issues).toHaveLength(1);
|
||||
expect(issues[0].fieldPath).toBe('recipients[0]');
|
||||
expect(issues[0].correctedValue).toBe('={{ $json.email1 }}');
|
||||
});
|
||||
|
||||
it('should handle nested objects', () => {
|
||||
const parameters = {
|
||||
config: {
|
||||
database: {
|
||||
host: '{{ $env.DB_HOST }}',
|
||||
port: 5432,
|
||||
name: 'mydb'
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
expect(issues).toHaveLength(1);
|
||||
expect(issues[0].fieldPath).toBe('config.database.host');
|
||||
});
|
||||
|
||||
it('should skip circular references', () => {
|
||||
const circular: any = { a: 1 };
|
||||
circular.self = circular;
|
||||
|
||||
const parameters = {
|
||||
normal: '{{ $json.value }}',
|
||||
circular
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
// Should only find the issue in 'normal', not crash on circular
|
||||
expect(issues).toHaveLength(1);
|
||||
expect(issues[0].fieldPath).toBe('normal');
|
||||
});
|
||||
|
||||
it('should handle maximum recursion depth', () => {
|
||||
// Create a deeply nested object (105 levels deep, exceeding the limit of 100)
|
||||
let deepObject: any = { value: '{{ $json.data }}' };
|
||||
let current = deepObject;
|
||||
for (let i = 0; i < 105; i++) {
|
||||
current.nested = { value: `{{ $json.level${i} }}` };
|
||||
current = current.nested;
|
||||
}
|
||||
|
||||
const parameters = {
|
||||
deep: deepObject
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
// Should find expression format issues up to the depth limit
|
||||
const depthWarning = issues.find(i => i.explanation.includes('Maximum recursion depth'));
|
||||
expect(depthWarning).toBeTruthy();
|
||||
expect(depthWarning?.severity).toBe('warning');
|
||||
|
||||
// Should still find some expression format errors before hitting the limit
|
||||
const formatErrors = issues.filter(i => i.issueType === 'missing-prefix');
|
||||
expect(formatErrors.length).toBeGreaterThan(0);
|
||||
expect(formatErrors.length).toBeLessThanOrEqual(100); // Should not exceed the depth limit
|
||||
});
|
||||
});
|
||||
|
||||
describe('formatErrorMessage', () => {
|
||||
const context = {
|
||||
nodeType: 'n8n-nodes-base.github',
|
||||
nodeName: 'Create Issue',
|
||||
nodeId: 'github-1'
|
||||
};
|
||||
|
||||
it('should format error message for missing prefix', () => {
|
||||
const issue = {
|
||||
fieldPath: 'title',
|
||||
currentValue: '{{ $json.title }}',
|
||||
correctedValue: '={{ $json.title }}',
|
||||
issueType: 'missing-prefix' as const,
|
||||
explanation: "Expression missing required '=' prefix.",
|
||||
severity: 'error' as const
|
||||
};
|
||||
|
||||
const message = ExpressionFormatValidator.formatErrorMessage(issue, context);
|
||||
|
||||
expect(message).toContain("Expression format error in node 'Create Issue'");
|
||||
expect(message).toContain('Field \'title\'');
|
||||
expect(message).toContain('Current (incorrect):');
|
||||
expect(message).toContain('"title": "{{ $json.title }}"');
|
||||
expect(message).toContain('Fixed (correct):');
|
||||
expect(message).toContain('"title": "={{ $json.title }}"');
|
||||
});
|
||||
|
||||
it('should format error message for resource locator', () => {
|
||||
const issue = {
|
||||
fieldPath: 'owner',
|
||||
currentValue: '{{ $vars.OWNER }}',
|
||||
correctedValue: {
|
||||
__rl: true,
|
||||
value: '={{ $vars.OWNER }}',
|
||||
mode: 'expression'
|
||||
},
|
||||
issueType: 'needs-resource-locator' as const,
|
||||
explanation: 'Field needs resource locator format.',
|
||||
severity: 'error' as const
|
||||
};
|
||||
|
||||
const message = ExpressionFormatValidator.formatErrorMessage(issue, context);
|
||||
|
||||
expect(message).toContain("Expression format error in node 'Create Issue'");
|
||||
expect(message).toContain('Current (incorrect):');
|
||||
expect(message).toContain('"owner": "{{ $vars.OWNER }}"');
|
||||
expect(message).toContain('Fixed (correct):');
|
||||
expect(message).toContain('"__rl": true');
|
||||
expect(message).toContain('"value": "={{ $vars.OWNER }}"');
|
||||
expect(message).toContain('"mode": "expression"');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Real-world examples', () => {
|
||||
it('should validate Email Send node example', () => {
|
||||
const context = {
|
||||
nodeType: 'n8n-nodes-base.emailSend',
|
||||
nodeName: 'Error Handler',
|
||||
nodeId: 'b9dd1cfd-ee66-4049-97e7-1af6d976a4e0'
|
||||
};
|
||||
|
||||
const parameters = {
|
||||
fromEmail: '{{ $env.ADMIN_EMAIL }}',
|
||||
toEmail: 'admin@company.com',
|
||||
subject: 'GitHub Issue Workflow Error - HIGH PRIORITY',
|
||||
options: {}
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
expect(issues).toHaveLength(1);
|
||||
expect(issues[0].fieldPath).toBe('fromEmail');
|
||||
expect(issues[0].correctedValue).toBe('={{ $env.ADMIN_EMAIL }}');
|
||||
});
|
||||
|
||||
it('should validate GitHub node example', () => {
|
||||
const context = {
|
||||
nodeType: 'n8n-nodes-base.github',
|
||||
nodeName: 'Send Welcome Comment',
|
||||
nodeId: '3c742ca1-af8f-4d80-a47e-e68fb1ced491'
|
||||
};
|
||||
|
||||
const parameters = {
|
||||
operation: 'createComment',
|
||||
owner: '{{ $vars.GITHUB_OWNER }}',
|
||||
repository: '{{ $vars.GITHUB_REPO }}',
|
||||
issueNumber: null,
|
||||
body: '👋 Hi @{{ $(\'Extract Issue Data\').first().json.author }}!\n\nThank you for creating this issue.'
|
||||
};
|
||||
|
||||
const issues = ExpressionFormatValidator.validateNodeParameters(parameters, context);
|
||||
|
||||
expect(issues.length).toBeGreaterThan(0);
|
||||
expect(issues.some(i => i.fieldPath === 'owner')).toBe(true);
|
||||
expect(issues.some(i => i.fieldPath === 'repository')).toBe(true);
|
||||
expect(issues.some(i => i.fieldPath === 'body')).toBe(true);
|
||||
});
|
||||
});
|
||||
});
|
||||
217
tests/unit/services/universal-expression-validator.test.ts
Normal file
217
tests/unit/services/universal-expression-validator.test.ts
Normal file
@@ -0,0 +1,217 @@
|
||||
import { describe, it, expect } from 'vitest';
|
||||
import { UniversalExpressionValidator } from '../../../src/services/universal-expression-validator';
|
||||
|
||||
describe('UniversalExpressionValidator', () => {
|
||||
describe('validateExpressionPrefix', () => {
|
||||
it('should detect missing prefix in pure expression', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix('{{ $json.value }}');
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
expect(result.needsPrefix).toBe(true);
|
||||
expect(result.isMixedContent).toBe(false);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
expect(result.suggestion).toBe('={{ $json.value }}');
|
||||
});
|
||||
|
||||
it('should detect missing prefix in mixed content', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(
|
||||
'Hello {{ $json.name }}'
|
||||
);
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
expect(result.needsPrefix).toBe(true);
|
||||
expect(result.isMixedContent).toBe(true);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
expect(result.suggestion).toBe('=Hello {{ $json.name }}');
|
||||
});
|
||||
|
||||
it('should accept properly prefixed expression', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix('={{ $json.value }}');
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
expect(result.needsPrefix).toBe(false);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
});
|
||||
|
||||
it('should accept properly prefixed mixed content', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(
|
||||
'=Hello {{ $json.name }}!'
|
||||
);
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
expect(result.isMixedContent).toBe(true);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
});
|
||||
|
||||
it('should ignore non-string values', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(123);
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(false);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
});
|
||||
|
||||
it('should ignore strings without expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix('plain text');
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(false);
|
||||
expect(result.confidence).toBe(1.0);
|
||||
});
|
||||
});
|
||||
|
||||
describe('validateExpressionSyntax', () => {
|
||||
it('should detect unclosed brackets', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionSyntax('={{ $json.value }');
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.explanation).toContain('Unmatched expression brackets');
|
||||
});
|
||||
|
||||
it('should detect empty expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionSyntax('={{ }}');
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.explanation).toContain('Empty expression');
|
||||
});
|
||||
|
||||
it('should accept valid syntax', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionSyntax('={{ $json.value }}');
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
});
|
||||
|
||||
it('should handle multiple expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionSyntax(
|
||||
'={{ $json.first }} and {{ $json.second }}'
|
||||
);
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
expect(result.hasExpression).toBe(true);
|
||||
expect(result.isMixedContent).toBe(true);
|
||||
});
|
||||
});
|
||||
|
||||
describe('validateCommonPatterns', () => {
|
||||
it('should detect template literal syntax', () => {
|
||||
const result = UniversalExpressionValidator.validateCommonPatterns('={{ ${json.value} }}');
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.explanation).toContain('Template literal syntax');
|
||||
});
|
||||
|
||||
it('should detect double prefix', () => {
|
||||
const result = UniversalExpressionValidator.validateCommonPatterns('={{ =$json.value }}');
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.explanation).toContain('Double prefix');
|
||||
});
|
||||
|
||||
it('should detect nested brackets', () => {
|
||||
const result = UniversalExpressionValidator.validateCommonPatterns(
|
||||
'={{ $json.items[{{ $json.index }}] }}'
|
||||
);
|
||||
|
||||
expect(result.isValid).toBe(false);
|
||||
expect(result.explanation).toContain('Nested brackets');
|
||||
});
|
||||
|
||||
it('should accept valid patterns', () => {
|
||||
const result = UniversalExpressionValidator.validateCommonPatterns(
|
||||
'={{ $json.items[$json.index] }}'
|
||||
);
|
||||
|
||||
expect(result.isValid).toBe(true);
|
||||
});
|
||||
});
|
||||
|
||||
describe('validate (comprehensive)', () => {
|
||||
it('should return all validation issues', () => {
|
||||
const results = UniversalExpressionValidator.validate('{{ ${json.value} }}');
|
||||
|
||||
expect(results.length).toBeGreaterThan(0);
|
||||
const issues = results.filter(r => !r.isValid);
|
||||
expect(issues.length).toBeGreaterThan(0);
|
||||
|
||||
// Should detect both missing prefix and template literal syntax
|
||||
const prefixIssue = issues.find(i => i.needsPrefix);
|
||||
const patternIssue = issues.find(i => i.explanation.includes('Template literal'));
|
||||
|
||||
expect(prefixIssue).toBeTruthy();
|
||||
expect(patternIssue).toBeTruthy();
|
||||
});
|
||||
|
||||
it('should return success for valid expression', () => {
|
||||
const results = UniversalExpressionValidator.validate('={{ $json.value }}');
|
||||
|
||||
expect(results).toHaveLength(1);
|
||||
expect(results[0].isValid).toBe(true);
|
||||
expect(results[0].confidence).toBe(1.0);
|
||||
});
|
||||
|
||||
it('should handle non-expression strings', () => {
|
||||
const results = UniversalExpressionValidator.validate('plain text');
|
||||
|
||||
expect(results).toHaveLength(1);
|
||||
expect(results[0].isValid).toBe(true);
|
||||
expect(results[0].hasExpression).toBe(false);
|
||||
});
|
||||
});
|
||||
|
||||
describe('getCorrectedValue', () => {
|
||||
it('should add prefix to expression', () => {
|
||||
const corrected = UniversalExpressionValidator.getCorrectedValue('{{ $json.value }}');
|
||||
expect(corrected).toBe('={{ $json.value }}');
|
||||
});
|
||||
|
||||
it('should add prefix to mixed content', () => {
|
||||
const corrected = UniversalExpressionValidator.getCorrectedValue(
|
||||
'Hello {{ $json.name }}'
|
||||
);
|
||||
expect(corrected).toBe('=Hello {{ $json.name }}');
|
||||
});
|
||||
|
||||
it('should not modify already prefixed expressions', () => {
|
||||
const corrected = UniversalExpressionValidator.getCorrectedValue('={{ $json.value }}');
|
||||
expect(corrected).toBe('={{ $json.value }}');
|
||||
});
|
||||
|
||||
it('should not modify non-expressions', () => {
|
||||
const corrected = UniversalExpressionValidator.getCorrectedValue('plain text');
|
||||
expect(corrected).toBe('plain text');
|
||||
});
|
||||
});
|
||||
|
||||
describe('hasMixedContent', () => {
|
||||
it('should detect URLs with expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(
|
||||
'https://api.example.com/users/{{ $json.id }}'
|
||||
);
|
||||
expect(result.isMixedContent).toBe(true);
|
||||
});
|
||||
|
||||
it('should detect text with expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(
|
||||
'Welcome {{ $json.name }} to our service'
|
||||
);
|
||||
expect(result.isMixedContent).toBe(true);
|
||||
});
|
||||
|
||||
it('should identify pure expressions', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix('{{ $json.value }}');
|
||||
expect(result.isMixedContent).toBe(false);
|
||||
});
|
||||
|
||||
it('should identify pure expressions with spaces', () => {
|
||||
const result = UniversalExpressionValidator.validateExpressionPrefix(
|
||||
' {{ $json.value }} '
|
||||
);
|
||||
expect(result.isMixedContent).toBe(false);
|
||||
});
|
||||
});
|
||||
});
|
||||
488
tests/unit/services/workflow-validator-expression-format.test.ts
Normal file
488
tests/unit/services/workflow-validator-expression-format.test.ts
Normal file
@@ -0,0 +1,488 @@
|
||||
import { describe, it, expect, beforeEach, vi } from 'vitest';
|
||||
import { WorkflowValidator } from '../../../src/services/workflow-validator';
|
||||
import { NodeRepository } from '../../../src/database/node-repository';
|
||||
import { EnhancedConfigValidator } from '../../../src/services/enhanced-config-validator';
|
||||
|
||||
// Mock the database
|
||||
vi.mock('../../../src/database/node-repository');
|
||||
|
||||
describe('WorkflowValidator - Expression Format Validation', () => {
|
||||
let validator: WorkflowValidator;
|
||||
let mockNodeRepository: any;
|
||||
|
||||
beforeEach(() => {
|
||||
// Create mock repository
|
||||
mockNodeRepository = {
|
||||
findNodeByType: vi.fn().mockImplementation((type: string) => {
|
||||
// Return mock nodes for common types
|
||||
if (type === 'n8n-nodes-base.emailSend') {
|
||||
return {
|
||||
node_type: 'n8n-nodes-base.emailSend',
|
||||
display_name: 'Email Send',
|
||||
properties: {},
|
||||
version: 2.1
|
||||
};
|
||||
}
|
||||
if (type === 'n8n-nodes-base.github') {
|
||||
return {
|
||||
node_type: 'n8n-nodes-base.github',
|
||||
display_name: 'GitHub',
|
||||
properties: {},
|
||||
version: 1.1
|
||||
};
|
||||
}
|
||||
if (type === 'n8n-nodes-base.webhook') {
|
||||
return {
|
||||
node_type: 'n8n-nodes-base.webhook',
|
||||
display_name: 'Webhook',
|
||||
properties: {},
|
||||
version: 1
|
||||
};
|
||||
}
|
||||
if (type === 'n8n-nodes-base.httpRequest') {
|
||||
return {
|
||||
node_type: 'n8n-nodes-base.httpRequest',
|
||||
display_name: 'HTTP Request',
|
||||
properties: {},
|
||||
version: 4
|
||||
};
|
||||
}
|
||||
return null;
|
||||
}),
|
||||
searchNodes: vi.fn().mockReturnValue([]),
|
||||
getAllNodes: vi.fn().mockReturnValue([]),
|
||||
close: vi.fn()
|
||||
};
|
||||
|
||||
validator = new WorkflowValidator(mockNodeRepository, EnhancedConfigValidator);
|
||||
});
|
||||
|
||||
describe('Expression Format Detection', () => {
|
||||
it('should detect missing = prefix in simple expressions', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'Send Email',
|
||||
type: 'n8n-nodes-base.emailSend',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
fromEmail: '{{ $env.SENDER_EMAIL }}',
|
||||
toEmail: 'user@example.com',
|
||||
subject: 'Test Email'
|
||||
},
|
||||
typeVersion: 2.1
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
expect(result.valid).toBe(false);
|
||||
|
||||
// Find expression format errors
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format error'));
|
||||
expect(formatErrors).toHaveLength(1);
|
||||
|
||||
const error = formatErrors[0];
|
||||
expect(error.message).toContain('Expression format error');
|
||||
expect(error.message).toContain('fromEmail');
|
||||
expect(error.message).toContain('{{ $env.SENDER_EMAIL }}');
|
||||
expect(error.message).toContain('={{ $env.SENDER_EMAIL }}');
|
||||
});
|
||||
|
||||
it('should detect missing resource locator format for GitHub fields', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'GitHub',
|
||||
type: 'n8n-nodes-base.github',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
operation: 'createComment',
|
||||
owner: '{{ $vars.GITHUB_OWNER }}',
|
||||
repository: '{{ $vars.GITHUB_REPO }}',
|
||||
issueNumber: 123,
|
||||
body: 'Test comment'
|
||||
},
|
||||
typeVersion: 1.1
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
expect(result.valid).toBe(false);
|
||||
// Should have errors for both owner and repository
|
||||
const ownerError = result.errors.find(e => e.message.includes('owner'));
|
||||
const repoError = result.errors.find(e => e.message.includes('repository'));
|
||||
|
||||
expect(ownerError).toBeTruthy();
|
||||
expect(repoError).toBeTruthy();
|
||||
expect(ownerError?.message).toContain('resource locator format');
|
||||
expect(ownerError?.message).toContain('__rl');
|
||||
});
|
||||
|
||||
it('should detect mixed content without prefix', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'HTTP Request',
|
||||
type: 'n8n-nodes-base.httpRequest',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
url: 'https://api.example.com/{{ $json.endpoint }}',
|
||||
headers: {
|
||||
Authorization: 'Bearer {{ $env.API_TOKEN }}'
|
||||
}
|
||||
},
|
||||
typeVersion: 4
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
expect(result.valid).toBe(false);
|
||||
const errors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(errors.length).toBeGreaterThan(0);
|
||||
|
||||
// Check for URL error
|
||||
const urlError = errors.find(e => e.message.includes('url'));
|
||||
expect(urlError).toBeTruthy();
|
||||
expect(urlError?.message).toContain('=https://api.example.com/{{ $json.endpoint }}');
|
||||
});
|
||||
|
||||
it('should accept properly formatted expressions', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'Send Email',
|
||||
type: 'n8n-nodes-base.emailSend',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
fromEmail: '={{ $env.SENDER_EMAIL }}',
|
||||
toEmail: 'user@example.com',
|
||||
subject: '=Test {{ $json.type }}'
|
||||
},
|
||||
typeVersion: 2.1
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have no expression format errors
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(formatErrors).toHaveLength(0);
|
||||
});
|
||||
|
||||
it('should accept resource locator format', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'GitHub',
|
||||
type: 'n8n-nodes-base.github',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
operation: 'createComment',
|
||||
owner: {
|
||||
__rl: true,
|
||||
value: '={{ $vars.GITHUB_OWNER }}',
|
||||
mode: 'expression'
|
||||
},
|
||||
repository: {
|
||||
__rl: true,
|
||||
value: '={{ $vars.GITHUB_REPO }}',
|
||||
mode: 'expression'
|
||||
},
|
||||
issueNumber: 123,
|
||||
body: '=Test comment from {{ $json.author }}'
|
||||
},
|
||||
typeVersion: 1.1
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have no expression format errors
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(formatErrors).toHaveLength(0);
|
||||
});
|
||||
|
||||
it('should validate nested expressions in complex parameters', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'HTTP Request',
|
||||
type: 'n8n-nodes-base.httpRequest',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
method: 'POST',
|
||||
url: 'https://api.example.com',
|
||||
sendBody: true,
|
||||
bodyParameters: {
|
||||
parameters: [
|
||||
{
|
||||
name: 'userId',
|
||||
value: '{{ $json.id }}'
|
||||
},
|
||||
{
|
||||
name: 'timestamp',
|
||||
value: '={{ $now }}'
|
||||
}
|
||||
]
|
||||
}
|
||||
},
|
||||
typeVersion: 4
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should detect the missing prefix in nested parameter
|
||||
const errors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(errors.length).toBeGreaterThan(0);
|
||||
|
||||
const nestedError = errors.find(e => e.message.includes('bodyParameters'));
|
||||
expect(nestedError).toBeTruthy();
|
||||
});
|
||||
|
||||
it('should warn about RL format even with prefix', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'GitHub',
|
||||
type: 'n8n-nodes-base.github',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
operation: 'createComment',
|
||||
owner: '={{ $vars.GITHUB_OWNER }}',
|
||||
repository: '={{ $vars.GITHUB_REPO }}',
|
||||
issueNumber: 123,
|
||||
body: 'Test'
|
||||
},
|
||||
typeVersion: 1.1
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have warnings about using RL format
|
||||
const warnings = result.warnings.filter(w => w.message.includes('resource locator format'));
|
||||
expect(warnings.length).toBeGreaterThan(0);
|
||||
});
|
||||
});
|
||||
|
||||
describe('Real-world workflow examples', () => {
|
||||
it('should validate Email workflow with expression issues', async () => {
|
||||
const workflow = {
|
||||
name: 'Error Notification Workflow',
|
||||
nodes: [
|
||||
{
|
||||
id: 'webhook-1',
|
||||
name: 'Webhook',
|
||||
type: 'n8n-nodes-base.webhook',
|
||||
position: [250, 300] as [number, number],
|
||||
parameters: {
|
||||
path: 'error-handler',
|
||||
httpMethod: 'POST'
|
||||
},
|
||||
typeVersion: 1
|
||||
},
|
||||
{
|
||||
id: 'email-1',
|
||||
name: 'Error Handler',
|
||||
type: 'n8n-nodes-base.emailSend',
|
||||
position: [450, 300] as [number, number],
|
||||
parameters: {
|
||||
fromEmail: '{{ $env.ADMIN_EMAIL }}',
|
||||
toEmail: 'admin@company.com',
|
||||
subject: 'Error in {{ $json.workflow }}',
|
||||
message: 'An error occurred: {{ $json.error }}',
|
||||
options: {
|
||||
replyTo: '={{ $env.SUPPORT_EMAIL }}'
|
||||
}
|
||||
},
|
||||
typeVersion: 2.1
|
||||
}
|
||||
],
|
||||
connections: {
|
||||
'Webhook': {
|
||||
main: [[{ node: 'Error Handler', type: 'main', index: 0 }]]
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have multiple expression format errors
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(formatErrors.length).toBeGreaterThanOrEqual(3); // fromEmail, subject, message
|
||||
|
||||
// Check specific errors
|
||||
const fromEmailError = formatErrors.find(e => e.message.includes('fromEmail'));
|
||||
expect(fromEmailError).toBeTruthy();
|
||||
expect(fromEmailError?.message).toContain('={{ $env.ADMIN_EMAIL }}');
|
||||
});
|
||||
|
||||
it('should validate GitHub workflow with resource locator issues', async () => {
|
||||
const workflow = {
|
||||
name: 'GitHub Issue Handler',
|
||||
nodes: [
|
||||
{
|
||||
id: 'webhook-1',
|
||||
name: 'Issue Webhook',
|
||||
type: 'n8n-nodes-base.webhook',
|
||||
position: [250, 300] as [number, number],
|
||||
parameters: {
|
||||
path: 'github-issue',
|
||||
httpMethod: 'POST'
|
||||
},
|
||||
typeVersion: 1
|
||||
},
|
||||
{
|
||||
id: 'github-1',
|
||||
name: 'Create Comment',
|
||||
type: 'n8n-nodes-base.github',
|
||||
position: [450, 300] as [number, number],
|
||||
parameters: {
|
||||
operation: 'createComment',
|
||||
owner: '{{ $vars.GITHUB_OWNER }}',
|
||||
repository: '{{ $vars.GITHUB_REPO }}',
|
||||
issueNumber: '={{ $json.body.issue.number }}',
|
||||
body: 'Thanks for the issue @{{ $json.body.issue.user.login }}!'
|
||||
},
|
||||
typeVersion: 1.1
|
||||
}
|
||||
],
|
||||
connections: {
|
||||
'Issue Webhook': {
|
||||
main: [[{ node: 'Create Comment', type: 'main', index: 0 }]]
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have errors for owner, repository, and body
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(formatErrors.length).toBeGreaterThanOrEqual(3);
|
||||
|
||||
// Check for resource locator suggestions
|
||||
const ownerError = formatErrors.find(e => e.message.includes('owner'));
|
||||
expect(ownerError?.message).toContain('__rl');
|
||||
expect(ownerError?.message).toContain('resource locator format');
|
||||
});
|
||||
|
||||
it('should provide clear fix examples in error messages', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'Process Data',
|
||||
type: 'n8n-nodes-base.httpRequest',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
url: 'https://api.example.com/users/{{ $json.userId }}'
|
||||
},
|
||||
typeVersion: 4
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
const error = result.errors.find(e => e.message.includes('Expression format'));
|
||||
expect(error).toBeTruthy();
|
||||
|
||||
// Error message should contain both incorrect and correct examples
|
||||
expect(error?.message).toContain('Current (incorrect):');
|
||||
expect(error?.message).toContain('"url": "https://api.example.com/users/{{ $json.userId }}"');
|
||||
expect(error?.message).toContain('Fixed (correct):');
|
||||
expect(error?.message).toContain('"url": "=https://api.example.com/users/{{ $json.userId }}"');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Integration with other validations', () => {
|
||||
it('should validate expression format alongside syntax', async () => {
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'Test Node',
|
||||
type: 'n8n-nodes-base.httpRequest',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
url: '{{ $json.url', // Syntax error: unclosed expression
|
||||
headers: {
|
||||
'X-Token': '{{ $env.TOKEN }}' // Format error: missing prefix
|
||||
}
|
||||
},
|
||||
typeVersion: 4
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have both syntax and format errors
|
||||
const syntaxErrors = result.errors.filter(e => e.message.includes('Unmatched expression brackets'));
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
|
||||
expect(syntaxErrors.length).toBeGreaterThan(0);
|
||||
expect(formatErrors.length).toBeGreaterThan(0);
|
||||
});
|
||||
|
||||
it('should not interfere with node validation', async () => {
|
||||
// Test that expression format validation works alongside other validations
|
||||
const workflow = {
|
||||
nodes: [
|
||||
{
|
||||
id: '1',
|
||||
name: 'HTTP Request',
|
||||
type: 'n8n-nodes-base.httpRequest',
|
||||
position: [0, 0] as [number, number],
|
||||
parameters: {
|
||||
url: '{{ $json.endpoint }}', // Expression format error
|
||||
headers: {
|
||||
Authorization: '={{ $env.TOKEN }}' // Correct format
|
||||
}
|
||||
},
|
||||
typeVersion: 4
|
||||
}
|
||||
],
|
||||
connections: {}
|
||||
};
|
||||
|
||||
const result = await validator.validateWorkflow(workflow);
|
||||
|
||||
// Should have expression format error for url field
|
||||
const formatErrors = result.errors.filter(e => e.message.includes('Expression format'));
|
||||
expect(formatErrors).toHaveLength(1);
|
||||
expect(formatErrors[0].message).toContain('url');
|
||||
|
||||
// The workflow should still have structure validation (no trigger warning, etc)
|
||||
// This proves that expression validation doesn't interfere with other checks
|
||||
expect(result.warnings.some(w => w.message.includes('trigger'))).toBe(true);
|
||||
});
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user