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fix: address critical code review issues for validation improvements

Browse Source 
- Fix type safety vulnerability in enhanced-config-validator.ts
  - Added proper type checking before string operations
  - Return early when nodeType is invalid instead of using empty string

- Improve error handling robustness in MCP server
  - Wrapped validation in try-catch to handle unexpected errors
  - Properly re-throw ValidationError instances
  - Add user-friendly error messages for internal errors

- Write comprehensive CHANGELOG entry for v2.10.3
  - Document fixes for issues #58, #68, #70, #73
  - Detail new validation system features
  - List all enhancements and test coverage

Addressed HIGH priority issues from code review:
- Type safety holes in config validator
- Missing error handling for validation system failures
- Consistent error types across validation tools
This commit is contained in:
czlonkowski
2025-08-07 20:05:57 +02:00
parent 48986263bf
commit 13c1663489
12 changed files with 1106 additions and 128 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
CLAUDE.md
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@@ -180,6 +180,9 @@ The MCP server exposes tools in several categories:
- Sub-agents are not allowed to spawn further sub-agents
- When you use sub-agents, do not allow them to commit and push. That should be done by you
### Development Best Practices
- Run typecheck and lint after every code change
# important-instruction-reminders
Do what has been asked; nothing more, nothing less.
NEVER create files unless they're absolutely necessary for achieving your goal.

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data/nodes.db
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45
docs/CHANGELOG.md
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@@ -7,6 +7,51 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
## [2.10.3] - 2025-08-07
### Fixed
- **Validation System Robustness**: Fixed multiple critical validation issues affecting AI agents and workflow validation (fixes #58, #68, #70, #73)
- **Issue #73**: Fixed `validate_node_minimal` crash when config is undefined
- Added safe property access with optional chaining (`config?.resource`)
- Tool now handles undefined, null, and malformed configs gracefully
- **Issue #58**: Fixed `validate_node_operation` crash on invalid nodeType
- Added type checking before calling string methods
- Prevents "Cannot read properties of undefined (reading 'replace')" error
- **Issue #70**: Fixed validation profile settings being ignored
- Extended profile parameter to all validation phases (nodes, connections, expressions)
- Added Sticky Notes filtering to reduce false positives
- Enhanced cycle detection to allow legitimate loops (SplitInBatches)
- **Issue #68**: Added error recovery suggestions for AI agents
- New `addErrorRecoverySuggestions()` method provides actionable recovery steps
- Categorizes errors and suggests specific fixes for each type
- Helps AI agents self-correct when validation fails
### Added
- **Input Validation System**: Comprehensive validation for all MCP tool inputs
- Created `validation-schemas.ts` with custom validation utilities
- No external dependencies - pure TypeScript implementation
- Tool-specific validation schemas for all MCP tools
- Clear error messages with field-level details
- **Enhanced Cycle Detection**: Improved detection of legitimate loops vs actual cycles
- Recognizes SplitInBatches loop patterns as valid
- Reduces false positive cycle warnings
- **Comprehensive Test Suite**: Added 16 tests covering all validation fixes
- Tests for crash prevention with malformed inputs
- Tests for profile behavior across validation phases
- Tests for error recovery suggestions
- Tests for legitimate loop patterns
### Enhanced
- **Validation Profiles**: Now consistently applied across all validation phases
- `minimal`: Reduces warnings for basic validation
- `runtime`: Standard validation for production workflows
- `ai-friendly`: Optimized for AI agent workflow creation
- `strict`: Maximum validation for critical workflows
- **Error Messages**: More helpful and actionable for both humans and AI agents
- Specific recovery suggestions for common errors
- Clear guidance on fixing validation issues
- Examples of correct configurations
## [2.10.2] - 2025-08-05
### Updated

2
package.json
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@@ -1,6 +1,6 @@
{
"name": "n8n-mcp",
"version": "2.10.2",
"version": "2.10.3",
"description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
"main": "dist/index.js",
"bin": {

105
src/mcp/server.ts
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@@ -28,6 +28,7 @@ import { handleUpdatePartialWorkflow } from './handlers-workflow-diff';
import { getToolDocumentation, getToolsOverview } from './tools-documentation';
import { PROJECT_VERSION } from '../utils/version';
import { normalizeNodeType, getNodeTypeAlternatives, getWorkflowNodeType } from '../utils/node-utils';
import { ToolValidation, Validator, ValidationError } from '../utils/validation-schemas';
import {
negotiateProtocolVersion,
logProtocolNegotiation,
@@ -460,9 +461,77 @@ export class N8NDocumentationMCPServer {
}
/**
* Validate required parameters for tool execution
* Enhanced parameter validation using schemas
*/
private validateToolParams(toolName: string, args: any, requiredParams: string[]): void {
private validateToolParams(toolName: string, args: any, legacyRequiredParams?: string[]): void {
try {
// If legacy required params are provided, use the new validation but fall back to basic if needed
let validationResult;
switch (toolName) {
case 'validate_node_operation':
validationResult = ToolValidation.validateNodeOperation(args);
break;
case 'validate_node_minimal':
validationResult = ToolValidation.validateNodeMinimal(args);
break;
case 'validate_workflow':
case 'validate_workflow_connections':
case 'validate_workflow_expressions':
validationResult = ToolValidation.validateWorkflow(args);
break;
case 'search_nodes':
validationResult = ToolValidation.validateSearchNodes(args);
break;
case 'list_node_templates':
validationResult = ToolValidation.validateListNodeTemplates(args);
break;
case 'n8n_create_workflow':
validationResult = ToolValidation.validateCreateWorkflow(args);
break;
case 'n8n_get_workflow':
case 'n8n_get_workflow_details':
case 'n8n_get_workflow_structure':
case 'n8n_get_workflow_minimal':
case 'n8n_update_full_workflow':
case 'n8n_delete_workflow':
case 'n8n_validate_workflow':
case 'n8n_get_execution':
case 'n8n_delete_execution':
validationResult = ToolValidation.validateWorkflowId(args);
break;
default:
// For tools not yet migrated to schema validation, use basic validation
return this.validateToolParamsBasic(toolName, args, legacyRequiredParams || []);
}
if (!validationResult.valid) {
const errorMessage = Validator.formatErrors(validationResult, toolName);
logger.error(`Parameter validation failed for ${toolName}:`, errorMessage);
throw new ValidationError(errorMessage);
}
} catch (error) {
// Handle validation errors properly
if (error instanceof ValidationError) {
throw error; // Re-throw validation errors as-is
}
// Handle unexpected errors from validation system
logger.error(`Validation system error for ${toolName}:`, error);
// Provide a user-friendly error message
const errorMessage = error instanceof Error
? `Internal validation error: ${error.message}`
: `Internal validation error while processing ${toolName}`;
throw new Error(errorMessage);
}
}
/**
* Legacy parameter validation (fallback)
*/
private validateToolParamsBasic(toolName: string, args: any, requiredParams: string[]): void {
const missing: string[] = [];
for (const param of requiredParams) {
@@ -619,12 +688,17 @@ export class N8NDocumentationMCPServer {
fix: 'Provide config as an object with node properties'
}],
warnings: [],
suggestions: [],
suggestions: [
'🔧 RECOVERY: Invalid config detected. Fix with:',
' • Ensure config is an object: { "resource": "...", "operation": "..." }',
' • Use get_node_essentials to see required fields for this node type',
' • Check if the node type is correct before configuring it'
],
summary: {
hasErrors: true,
errorCount: 1,
warningCount: 0,
suggestionCount: 0
suggestionCount: 3
}
};
}
@@ -638,7 +712,10 @@ export class N8NDocumentationMCPServer {
nodeType: args.nodeType || 'unknown',
displayName: 'Unknown Node',
valid: false,
missingRequiredFields: ['Invalid config format - expected object']
missingRequiredFields: [
'Invalid config format - expected object',
'🔧 RECOVERY: Use format { "resource": "...", "operation": "..." } or {} for empty config'
]
};
}
return this.validateNodeMinimal(args.nodeType, args.config);
@@ -2141,12 +2218,12 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
// Get properties
const properties = node.properties || [];
// Extract operation context
// Extract operation context (safely handle undefined config properties)
const operationContext = {
resource: config.resource,
operation: config.operation,
action: config.action,
mode: config.mode
resource: config?.resource,
operation: config?.operation,
action: config?.action,
mode: config?.mode
};
// Find missing required fields
@@ -2163,7 +2240,7 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
// Check show conditions
if (prop.displayOptions.show) {
for (const [key, values] of Object.entries(prop.displayOptions.show)) {
const configValue = config[key];
const configValue = config?.[key];
const expectedValues = Array.isArray(values) ? values : [values];
if (!expectedValues.includes(configValue)) {
@@ -2176,7 +2253,7 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
// Check hide conditions
if (isVisible && prop.displayOptions.hide) {
for (const [key, values] of Object.entries(prop.displayOptions.hide)) {
const configValue = config[key];
const configValue = config?.[key];
const expectedValues = Array.isArray(values) ? values : [values];
if (expectedValues.includes(configValue)) {
@@ -2189,8 +2266,8 @@ Full documentation is being prepared. For now, use get_node_essentials for confi
if (!isVisible) continue;
}
// Check if field is missing
if (!(prop.name in config)) {
// Check if field is missing (safely handle null/undefined config)
if (!config || !(prop.name in config)) {
missingFields.push(prop.displayName || prop.name);
}
}

24
src/services/enhanced-config-validator.ts
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@@ -45,6 +45,19 @@ export class EnhancedConfigValidator extends ConfigValidator {
mode: ValidationMode = 'operation',
profile: ValidationProfile = 'ai-friendly'
): EnhancedValidationResult {
// Input validation - ensure parameters are valid
if (typeof nodeType !== 'string') {
throw new Error(`Invalid nodeType: expected string, got ${typeof nodeType}`);
}
if (!config || typeof config !== 'object') {
throw new Error(`Invalid config: expected object, got ${typeof config}`);
}
if (!Array.isArray(properties)) {
throw new Error(`Invalid properties: expected array, got ${typeof properties}`);
}
// Extract operation context from config
const operationContext = this.extractOperationContext(config);
@@ -190,6 +203,17 @@ export class EnhancedConfigValidator extends ConfigValidator {
config: Record<string, any>,
result: EnhancedValidationResult
): void {
// Type safety check - this should never happen with proper validation
if (typeof nodeType !== 'string') {
result.errors.push({
type: 'invalid_type',
property: 'nodeType',
message: `Invalid nodeType: expected string, got ${typeof nodeType}`,
fix: 'Provide a valid node type string (e.g., "nodes-base.webhook")'
});
return;
}
// First, validate fixedCollection properties for known problematic nodes
this.validateFixedCollectionStructures(nodeType, config, result);

159
src/services/workflow-validator.ts
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@@ -79,6 +79,18 @@ export class WorkflowValidator {
private nodeValidator: typeof EnhancedConfigValidator
) {}
/**
* Check if a node is a Sticky Note or other non-executable node
*/
private isStickyNote(node: WorkflowNode): boolean {
const stickyNoteTypes = [
'n8n-nodes-base.stickyNote',
'nodes-base.stickyNote',
'@n8n/n8n-nodes-base.stickyNote'
];
return stickyNoteTypes.includes(node.type);
}
/**
* Validate a complete workflow
*/
@@ -127,9 +139,10 @@ export class WorkflowValidator {
return result;
}
// Update statistics after null check
result.statistics.totalNodes = Array.isArray(workflow.nodes) ? workflow.nodes.length : 0;
result.statistics.enabledNodes = Array.isArray(workflow.nodes) ? workflow.nodes.filter(n => !n.disabled).length : 0;
// Update statistics after null check (exclude sticky notes from counts)
const executableNodes = Array.isArray(workflow.nodes) ? workflow.nodes.filter(n => !this.isStickyNote(n)) : [];
result.statistics.totalNodes = executableNodes.length;
result.statistics.enabledNodes = executableNodes.filter(n => !n.disabled).length;
// Basic workflow structure validation
this.validateWorkflowStructure(workflow, result);
@@ -143,21 +156,26 @@ export class WorkflowValidator {
// Validate connections if requested
if (validateConnections) {
this.validateConnections(workflow, result);
this.validateConnections(workflow, result, profile);
}
// Validate expressions if requested
if (validateExpressions && workflow.nodes.length > 0) {
this.validateExpressions(workflow, result);
this.validateExpressions(workflow, result, profile);
}
// Check workflow patterns and best practices
if (workflow.nodes.length > 0) {
this.checkWorkflowPatterns(workflow, result);
this.checkWorkflowPatterns(workflow, result, profile);
}
// Add suggestions based on findings
this.generateSuggestions(workflow, result);
// Add AI-specific recovery suggestions if there are errors
if (result.errors.length > 0) {
this.addErrorRecoverySuggestions(result);
}
}
} catch (error) {
@@ -308,7 +326,7 @@ export class WorkflowValidator {
profile: string
): Promise<void> {
for (const node of workflow.nodes) {
if (node.disabled) continue;
if (node.disabled || this.isStickyNote(node)) continue;
try {
// Validate node name length
@@ -500,7 +518,8 @@ export class WorkflowValidator {
*/
private validateConnections(
workflow: WorkflowJson,
result: WorkflowValidationResult
result: WorkflowValidationResult,
profile: string = 'runtime'
): void {
const nodeMap = new Map(workflow.nodes.map(n => [n.name, n]));
const nodeIdMap = new Map(workflow.nodes.map(n => [n.id, n]));
@@ -591,9 +610,9 @@ export class WorkflowValidator {
}
});
// Check for orphaned nodes
// Check for orphaned nodes (exclude sticky notes)
for (const node of workflow.nodes) {
if (node.disabled) continue;
if (node.disabled || this.isStickyNote(node)) continue;
const normalizedType = node.type.replace('n8n-nodes-base.', 'nodes-base.');
const isTrigger = normalizedType.toLowerCase().includes('trigger') ||
@@ -612,8 +631,8 @@ export class WorkflowValidator {
}
}
// Check for cycles
if (this.hasCycle(workflow)) {
// Check for cycles (skip in minimal profile to reduce false positives)
if (profile !== 'minimal' && this.hasCycle(workflow)) {
result.errors.push({
type: 'error',
message: 'Workflow contains a cycle (infinite loop)'
@@ -757,11 +776,23 @@ export class WorkflowValidator {
const recursionStack = new Set<string>();
const nodeTypeMap = new Map<string, string>();
// Build node type map
// Build node type map (exclude sticky notes)
workflow.nodes.forEach(node => {
nodeTypeMap.set(node.name, node.type);
if (!this.isStickyNote(node)) {
nodeTypeMap.set(node.name, node.type);
}
});
// Known legitimate loop node types
const loopNodeTypes = [
'n8n-nodes-base.splitInBatches',
'nodes-base.splitInBatches',
'n8n-nodes-base.itemLists',
'nodes-base.itemLists',
'n8n-nodes-base.loop',
'nodes-base.loop'
];
const hasCycleDFS = (nodeName: string, pathFromLoopNode: boolean = false): boolean => {
visited.add(nodeName);
recursionStack.add(nodeName);
@@ -789,18 +820,18 @@ export class WorkflowValidator {
}
const currentNodeType = nodeTypeMap.get(nodeName);
const isLoopNode = currentNodeType === 'n8n-nodes-base.splitInBatches';
const isLoopNode = loopNodeTypes.includes(currentNodeType || '');
for (const target of allTargets) {
if (!visited.has(target)) {
if (hasCycleDFS(target, pathFromLoopNode || isLoopNode)) return true;
} else if (recursionStack.has(target)) {
// Allow cycles that involve loop nodes like SplitInBatches
// Allow cycles that involve legitimate loop nodes
const targetNodeType = nodeTypeMap.get(target);
const isTargetLoopNode = targetNodeType === 'n8n-nodes-base.splitInBatches';
const isTargetLoopNode = loopNodeTypes.includes(targetNodeType || '');
// If this cycle involves a loop node, it's legitimate
if (isTargetLoopNode || pathFromLoopNode) {
if (isTargetLoopNode || pathFromLoopNode || isLoopNode) {
continue; // Allow this cycle
}
@@ -813,9 +844,9 @@ export class WorkflowValidator {
return false;
};
// Check from all nodes
// Check from all executable nodes (exclude sticky notes)
for (const node of workflow.nodes) {
if (!visited.has(node.name)) {
if (!this.isStickyNote(node) && !visited.has(node.name)) {
if (hasCycleDFS(node.name)) return true;
}
}
@@ -828,12 +859,13 @@ export class WorkflowValidator {
*/
private validateExpressions(
workflow: WorkflowJson,
result: WorkflowValidationResult
result: WorkflowValidationResult,
profile: string = 'runtime'
): void {
const nodeNames = workflow.nodes.map(n => n.name);
for (const node of workflow.nodes) {
if (node.disabled) continue;
if (node.disabled || this.isStickyNote(node)) continue;
// Create expression context
const context = {
@@ -922,23 +954,27 @@ export class WorkflowValidator {
*/
private checkWorkflowPatterns(
workflow: WorkflowJson,
result: WorkflowValidationResult
result: WorkflowValidationResult,
profile: string = 'runtime'
): void {
// Check for error handling
const hasErrorHandling = Object.values(workflow.connections).some(
outputs => outputs.error && outputs.error.length > 0
);
if (!hasErrorHandling && workflow.nodes.length > 3) {
// Only suggest error handling in stricter profiles
if (!hasErrorHandling && workflow.nodes.length > 3 && profile !== 'minimal') {
result.warnings.push({
type: 'warning',
message: 'Consider adding error handling to your workflow'
});
}
// Check node-level error handling properties for ALL nodes
// Check node-level error handling properties for ALL executable nodes
for (const node of workflow.nodes) {
this.checkNodeErrorHandling(node, workflow, result);
if (!this.isStickyNote(node)) {
this.checkNodeErrorHandling(node, workflow, result);
}
}
// Check for very long linear workflows
@@ -1641,4 +1677,75 @@ export class WorkflowValidator {
return false;
}
/**
* Add AI-specific error recovery suggestions
*/
private addErrorRecoverySuggestions(result: WorkflowValidationResult): void {
// Categorize errors and provide specific recovery actions
const errorTypes = {
nodeType: result.errors.filter(e => e.message.includes('node type') || e.message.includes('Node type')),
connection: result.errors.filter(e => e.message.includes('connection') || e.message.includes('Connection')),
structure: result.errors.filter(e => e.message.includes('structure') || e.message.includes('nodes must be')),
configuration: result.errors.filter(e => e.message.includes('property') || e.message.includes('field')),
typeVersion: result.errors.filter(e => e.message.includes('typeVersion'))
};
// Add recovery suggestions based on error types
if (errorTypes.nodeType.length > 0) {
result.suggestions.unshift(
'🔧 RECOVERY: Invalid node types detected. Use these patterns:',
' • For core nodes: "n8n-nodes-base.nodeName" (e.g., "n8n-nodes-base.webhook")',
' • For AI nodes: "@n8n/n8n-nodes-langchain.nodeName"',
' • Never use just the node name without package prefix'
);
}
if (errorTypes.connection.length > 0) {
result.suggestions.unshift(
'🔧 RECOVERY: Connection errors detected. Fix with:',
' • Use node NAMES in connections, not IDs or types',
' • Structure: { "Source Node Name": { "main": [[{ "node": "Target Node Name", "type": "main", "index": 0 }]] } }',
' • Ensure all referenced nodes exist in the workflow'
);
}
if (errorTypes.structure.length > 0) {
result.suggestions.unshift(
'🔧 RECOVERY: Workflow structure errors. Fix with:',
' • Ensure "nodes" is an array: "nodes": [...]',
' • Ensure "connections" is an object: "connections": {...}',
' • Add at least one node to create a valid workflow'
);
}
if (errorTypes.configuration.length > 0) {
result.suggestions.unshift(
'🔧 RECOVERY: Node configuration errors. Fix with:',
' • Check required fields using validate_node_minimal first',
' • Use get_node_essentials to see what fields are needed',
' • Ensure operation-specific fields match the node\'s requirements'
);
}
if (errorTypes.typeVersion.length > 0) {
result.suggestions.unshift(
'🔧 RECOVERY: TypeVersion errors. Fix with:',
' • Add "typeVersion": 1 (or latest version) to each node',
' • Use get_node_info to check the correct version for each node type'
);
}
// Add general recovery workflow
if (result.errors.length > 3) {
result.suggestions.push(
'📋 SUGGESTED WORKFLOW: Too many errors detected. Try this approach:',
' 1. Fix structural issues first (nodes array, connections object)',
' 2. Validate node types and fix invalid ones',
' 3. Add required typeVersion to all nodes',
' 4. Test connections step by step',
' 5. Use validate_node_minimal on individual nodes to verify configuration'
);
}
}
}

312
src/utils/validation-schemas.ts Normal file
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@@ -0,0 +1,312 @@
/**
* Zod validation schemas for MCP tool parameters
* Provides robust input validation with detailed error messages
*/
// Simple validation without zod for now, since it's not installed
// We can use TypeScript's built-in validation with better error messages
export class ValidationError extends Error {
constructor(message: string, public field?: string, public value?: any) {
super(message);
this.name = 'ValidationError';
}
}
export interface ValidationResult {
valid: boolean;
errors: Array<{
field: string;
message: string;
value?: any;
}>;
}
/**
* Basic validation utilities
*/
export class Validator {
/**
* Validate that a value is a non-empty string
*/
static validateString(value: any, fieldName: string, required: boolean = true): ValidationResult {
const errors: Array<{field: string, message: string, value?: any}> = [];
if (required && (value === undefined || value === null)) {
errors.push({
field: fieldName,
message: `${fieldName} is required`,
value
});
} else if (value !== undefined && value !== null && typeof value !== 'string') {
errors.push({
field: fieldName,
message: `${fieldName} must be a string, got ${typeof value}`,
value
});
} else if (required && typeof value === 'string' && value.trim().length === 0) {
errors.push({
field: fieldName,
message: `${fieldName} cannot be empty`,
value
});
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Validate that a value is a valid object (not null, not array)
*/
static validateObject(value: any, fieldName: string, required: boolean = true): ValidationResult {
const errors: Array<{field: string, message: string, value?: any}> = [];
if (required && (value === undefined || value === null)) {
errors.push({
field: fieldName,
message: `${fieldName} is required`,
value
});
} else if (value !== undefined && value !== null) {
if (typeof value !== 'object') {
errors.push({
field: fieldName,
message: `${fieldName} must be an object, got ${typeof value}`,
value
});
} else if (Array.isArray(value)) {
errors.push({
field: fieldName,
message: `${fieldName} must be an object, not an array`,
value
});
}
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Validate that a value is an array
*/
static validateArray(value: any, fieldName: string, required: boolean = true): ValidationResult {
const errors: Array<{field: string, message: string, value?: any}> = [];
if (required && (value === undefined || value === null)) {
errors.push({
field: fieldName,
message: `${fieldName} is required`,
value
});
} else if (value !== undefined && value !== null && !Array.isArray(value)) {
errors.push({
field: fieldName,
message: `${fieldName} must be an array, got ${typeof value}`,
value
});
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Validate that a value is a number
*/
static validateNumber(value: any, fieldName: string, required: boolean = true, min?: number, max?: number): ValidationResult {
const errors: Array<{field: string, message: string, value?: any}> = [];
if (required && (value === undefined || value === null)) {
errors.push({
field: fieldName,
message: `${fieldName} is required`,
value
});
} else if (value !== undefined && value !== null) {
if (typeof value !== 'number' || isNaN(value)) {
errors.push({
field: fieldName,
message: `${fieldName} must be a number, got ${typeof value}`,
value
});
} else {
if (min !== undefined && value < min) {
errors.push({
field: fieldName,
message: `${fieldName} must be at least ${min}, got ${value}`,
value
});
}
if (max !== undefined && value > max) {
errors.push({
field: fieldName,
message: `${fieldName} must be at most ${max}, got ${value}`,
value
});
}
}
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Validate that a value is one of allowed values
*/
static validateEnum<T>(value: any, fieldName: string, allowedValues: T[], required: boolean = true): ValidationResult {
const errors: Array<{field: string, message: string, value?: any}> = [];
if (required && (value === undefined || value === null)) {
errors.push({
field: fieldName,
message: `${fieldName} is required`,
value
});
} else if (value !== undefined && value !== null && !allowedValues.includes(value)) {
errors.push({
field: fieldName,
message: `${fieldName} must be one of: ${allowedValues.join(', ')}, got "${value}"`,
value
});
}
return {
valid: errors.length === 0,
errors
};
}
/**
* Combine multiple validation results
*/
static combineResults(...results: ValidationResult[]): ValidationResult {
const allErrors = results.flatMap(r => r.errors);
return {
valid: allErrors.length === 0,
errors: allErrors
};
}
/**
* Create a detailed error message from validation result
*/
static formatErrors(result: ValidationResult, toolName?: string): string {
if (result.valid) return '';
const prefix = toolName ? `${toolName}: ` : '';
const errors = result.errors.map(e => ` • ${e.field}: ${e.message}`).join('\n');
return `${prefix}Validation failed:\n${errors}`;
}
}
/**
* Tool-specific validation schemas
*/
export class ToolValidation {
/**
* Validate parameters for validate_node_operation tool
*/
static validateNodeOperation(args: any): ValidationResult {
const nodeTypeResult = Validator.validateString(args.nodeType, 'nodeType');
const configResult = Validator.validateObject(args.config, 'config');
const profileResult = Validator.validateEnum(
args.profile,
'profile',
['minimal', 'runtime', 'ai-friendly', 'strict'],
false // optional
);
return Validator.combineResults(nodeTypeResult, configResult, profileResult);
}
/**
* Validate parameters for validate_node_minimal tool
*/
static validateNodeMinimal(args: any): ValidationResult {
const nodeTypeResult = Validator.validateString(args.nodeType, 'nodeType');
const configResult = Validator.validateObject(args.config, 'config');
return Validator.combineResults(nodeTypeResult, configResult);
}
/**
* Validate parameters for validate_workflow tool
*/
static validateWorkflow(args: any): ValidationResult {
const workflowResult = Validator.validateObject(args.workflow, 'workflow');
// Validate workflow structure if it's an object
let nodesResult: ValidationResult = { valid: true, errors: [] };
let connectionsResult: ValidationResult = { valid: true, errors: [] };
if (workflowResult.valid && args.workflow) {
nodesResult = Validator.validateArray(args.workflow.nodes, 'workflow.nodes');
connectionsResult = Validator.validateObject(args.workflow.connections, 'workflow.connections');
}
const optionsResult = args.options ?
Validator.validateObject(args.options, 'options', false) :
{ valid: true, errors: [] };
return Validator.combineResults(workflowResult, nodesResult, connectionsResult, optionsResult);
}
/**
* Validate parameters for search_nodes tool
*/
static validateSearchNodes(args: any): ValidationResult {
const queryResult = Validator.validateString(args.query, 'query');
const limitResult = Validator.validateNumber(args.limit, 'limit', false, 1, 200);
const modeResult = Validator.validateEnum(
args.mode,
'mode',
['OR', 'AND', 'FUZZY'],
false
);
return Validator.combineResults(queryResult, limitResult, modeResult);
}
/**
* Validate parameters for list_node_templates tool
*/
static validateListNodeTemplates(args: any): ValidationResult {
const nodeTypesResult = Validator.validateArray(args.nodeTypes, 'nodeTypes');
const limitResult = Validator.validateNumber(args.limit, 'limit', false, 1, 50);
return Validator.combineResults(nodeTypesResult, limitResult);
}
/**
* Validate parameters for n8n workflow operations
*/
static validateWorkflowId(args: any): ValidationResult {
return Validator.validateString(args.id, 'id');
}
/**
* Validate parameters for n8n_create_workflow tool
*/
static validateCreateWorkflow(args: any): ValidationResult {
const nameResult = Validator.validateString(args.name, 'name');
const nodesResult = Validator.validateArray(args.nodes, 'nodes');
const connectionsResult = Validator.validateObject(args.connections, 'connections');
const settingsResult = args.settings ?
Validator.validateObject(args.settings, 'settings', false) :
{ valid: true, errors: [] };
return Validator.combineResults(nameResult, nodesResult, connectionsResult, settingsResult);
}
}

130
tests/unit/services/workflow-validator-comprehensive.test.ts
View File

@@ -223,7 +223,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
it('should error when nodes array is missing', async () => {
const workflow = { connections: {} } as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message === 'Workflow must have a nodes array')).toBe(true);
@@ -232,7 +232,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
it('should error when connections object is missing', async () => {
const workflow = { nodes: [] } as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message === 'Workflow must have a connections object')).toBe(true);
@@ -241,7 +241,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
it('should warn when workflow has no nodes', async () => {
const workflow = { nodes: [], connections: {} } as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true); // Empty workflows are valid but get a warning
expect(result.warnings).toHaveLength(1);
@@ -260,7 +260,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message.includes('Single-node workflows are only valid for webhook endpoints'))).toBe(true);
@@ -279,7 +279,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true);
expect(result.warnings.some(w => w.message.includes('Webhook node has no connections'))).toBe(true);
@@ -306,7 +306,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message.includes('Multi-node workflow has no connections'))).toBe(true);
@@ -333,7 +333,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Duplicate node name: "Webhook"'))).toBe(true);
});
@@ -359,7 +359,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Duplicate node ID: "1"'))).toBe(true);
});
@@ -392,7 +392,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.triggerNodes).toBe(3);
});
@@ -422,7 +422,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Workflow has no trigger nodes'))).toBe(true);
});
@@ -449,7 +449,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.totalNodes).toBe(2);
expect(result.statistics.enabledNodes).toBe(1);
@@ -472,7 +472,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(mockNodeRepository.getNode).not.toHaveBeenCalled();
});
@@ -491,7 +491,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message.includes('Invalid node type: "nodes-base.webhook"'))).toBe(true);
@@ -512,7 +512,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(false);
expect(result.errors.some(e => e.message.includes('Unknown node type: "httpRequest"'))).toBe(true);
@@ -533,7 +533,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(mockNodeRepository.getNode).toHaveBeenCalledWith('n8n-nodes-base.webhook');
expect(mockNodeRepository.getNode).toHaveBeenCalledWith('nodes-base.webhook');
@@ -553,7 +553,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(mockNodeRepository.getNode).toHaveBeenCalledWith('@n8n/n8n-nodes-langchain.agent');
expect(mockNodeRepository.getNode).toHaveBeenCalledWith('nodes-langchain.agent');
@@ -574,7 +574,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Missing required property \'typeVersion\''))).toBe(true);
});
@@ -594,7 +594,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Invalid typeVersion: invalid'))).toBe(true);
});
@@ -614,7 +614,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Outdated typeVersion: 1. Latest is 2'))).toBe(true);
});
@@ -634,7 +634,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('typeVersion 10 exceeds maximum supported version 2'))).toBe(true);
});
@@ -664,7 +664,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Missing required field: url'))).toBe(true);
expect(result.warnings.some(w => w.message.includes('Consider using HTTPS'))).toBe(true);
@@ -689,7 +689,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Failed to validate node: Validation error'))).toBe(true);
});
@@ -721,7 +721,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.validConnections).toBe(1);
expect(result.statistics.invalidConnections).toBe(0);
@@ -745,7 +745,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Connection from non-existent node: "NonExistent"'))).toBe(true);
expect(result.statistics.invalidConnections).toBe(1);
@@ -776,7 +776,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Connection uses node ID \'webhook-id\' instead of node name \'Webhook\''))).toBe(true);
});
@@ -799,7 +799,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Connection to non-existent node: "NonExistent"'))).toBe(true);
expect(result.statistics.invalidConnections).toBe(1);
@@ -830,7 +830,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Connection target uses node ID \'set-id\' instead of node name \'Set\''))).toBe(true);
});
@@ -861,7 +861,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Connection to disabled node: "Set"'))).toBe(true);
});
@@ -891,7 +891,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.validConnections).toBe(1);
});
@@ -921,7 +921,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.validConnections).toBe(1);
});
@@ -953,7 +953,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Community node "CustomTool" is being used as an AI tool'))).toBe(true);
});
@@ -990,7 +990,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Node is not connected to any other nodes') && w.nodeName === 'Orphaned')).toBe(true);
});
@@ -1033,7 +1033,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Workflow contains a cycle'))).toBe(true);
});
@@ -1068,7 +1068,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.validConnections).toBe(1);
expect(result.valid).toBe(true);
@@ -1110,7 +1110,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(ExpressionValidator.validateNodeExpressions).toHaveBeenCalledWith(
expect.objectContaining({ values: expect.any(Object) }),
@@ -1146,7 +1146,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Expression error: Invalid expression syntax'))).toBe(true);
expect(result.warnings.some(w => w.message.includes('Expression warning: Deprecated variable usage'))).toBe(true);
@@ -1170,7 +1170,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(ExpressionValidator.validateNodeExpressions).not.toHaveBeenCalled();
});
@@ -1187,7 +1187,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
const workflow = builder.build() as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Consider adding error handling'))).toBe(true);
});
@@ -1208,7 +1208,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
const workflow = builder.build() as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Long linear chain detected'))).toBe(true);
});
@@ -1230,7 +1230,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Missing credentials configuration for slackApi'))).toBe(true);
});
@@ -1249,7 +1249,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('AI Agent has no tools connected'))).toBe(true);
});
@@ -1279,7 +1279,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('N8N_COMMUNITY_PACKAGES_ALLOW_TOOL_USAGE'))).toBe(true);
});
@@ -1306,7 +1306,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Node-level properties onError, retryOnFail, credentials are in the wrong location'))).toBe(true);
expect(result.errors.some(e => e.details?.fix?.includes('Move these properties from node.parameters to the node level'))).toBe(true);
@@ -1327,7 +1327,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Invalid onError value: "invalidValue"'))).toBe(true);
});
@@ -1347,7 +1347,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Using deprecated "continueOnFail: true"'))).toBe(true);
});
@@ -1368,7 +1368,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Cannot use both "continueOnFail" and "onError" properties'))).toBe(true);
});
@@ -1390,7 +1390,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('maxTries must be a positive number'))).toBe(true);
expect(result.errors.some(e => e.message.includes('waitBetweenTries must be a non-negative number'))).toBe(true);
@@ -1413,7 +1413,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('maxTries is set to 15'))).toBe(true);
expect(result.warnings.some(w => w.message.includes('waitBetweenTries is set to 400000ms'))).toBe(true);
@@ -1434,7 +1434,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('retryOnFail is enabled but maxTries is not specified'))).toBe(true);
});
@@ -1459,7 +1459,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('alwaysOutputData must be a boolean'))).toBe(true);
@@ -1484,7 +1484,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('executeOnce is enabled'))).toBe(true);
});
@@ -1512,7 +1512,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes(nodeInfo.message) && w.message.includes('without error handling'))).toBe(true);
}
@@ -1534,7 +1534,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('Both continueOnFail and retryOnFail are enabled'))).toBe(true);
});
@@ -1554,7 +1554,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Consider enabling alwaysOutputData'))).toBe(true);
});
@@ -1569,7 +1569,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
const workflow = builder.build() as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Most nodes lack error handling'))).toBe(true);
});
@@ -1589,7 +1589,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Replace "continueOnFail: true" with "onError:'))).toBe(true);
});
@@ -1610,7 +1610,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Add a trigger node'))).toBe(true);
});
@@ -1636,7 +1636,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {} // Missing connections
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Example connection structure'))).toBe(true);
expect(result.suggestions.some(s => s.includes('Use node NAMES (not IDs) in connections'))).toBe(true);
@@ -1667,7 +1667,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Add error handling'))).toBe(true);
});
@@ -1682,7 +1682,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
const workflow = builder.build() as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Consider breaking this workflow into smaller sub-workflows'))).toBe(true);
});
@@ -1708,7 +1708,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('Consider using a Code node for complex data transformations'))).toBe(true);
});
@@ -1727,7 +1727,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.suggestions.some(s => s.includes('A minimal workflow needs'))).toBe(true);
});
@@ -1756,7 +1756,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
connections: {}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes(`Did you mean`) && e.message.includes(testCase.suggestion))).toBe(true);
}
@@ -1848,7 +1848,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Should have multiple errors
expect(result.valid).toBe(false);
@@ -1940,7 +1940,7 @@ describe('WorkflowValidator - Comprehensive Tests', () => {
}
} as any;
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true);
expect(result.errors).toHaveLength(0);

28
tests/unit/services/workflow-validator-edge-cases.test.ts
View File

@@ -157,7 +157,7 @@ describe('WorkflowValidator - Edge Cases', () => {
nodes: [],
connections: {}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true);
expect(result.warnings.some(w => w.message.includes('empty'))).toBe(true);
});
@@ -181,7 +181,7 @@ describe('WorkflowValidator - Edge Cases', () => {
const workflow = { nodes, connections };
const start = Date.now();
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
const duration = Date.now() - start;
expect(result).toBeDefined();
@@ -207,7 +207,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.invalidConnections).toBe(0);
});
@@ -228,7 +228,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true);
});
});
@@ -264,7 +264,7 @@ describe('WorkflowValidator - Edge Cases', () => {
connections: {}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.length).toBeGreaterThan(0);
});
@@ -292,7 +292,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('self-referencing'))).toBe(true);
});
@@ -308,7 +308,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('non-existent'))).toBe(true);
});
@@ -324,7 +324,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.length).toBeGreaterThan(0);
});
@@ -341,7 +341,7 @@ describe('WorkflowValidator - Edge Cases', () => {
} as any
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Should still work as type and index can have defaults
expect(result.statistics.validConnections).toBeGreaterThan(0);
});
@@ -359,7 +359,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.some(e => e.message.includes('Invalid'))).toBe(true);
});
});
@@ -382,7 +382,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.valid).toBe(true);
});
@@ -395,7 +395,7 @@ describe('WorkflowValidator - Edge Cases', () => {
connections: {}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.warnings.some(w => w.message.includes('very long'))).toBe(true);
});
});
@@ -479,7 +479,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.statistics.validConnections).toBeGreaterThan(0);
});
});
@@ -499,7 +499,7 @@ describe('WorkflowValidator - Edge Cases', () => {
}
};
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
expect(result.errors.length).toBeGreaterThan(0);
expect(result.statistics.validConnections).toBeGreaterThan(0);
});

16
tests/unit/services/workflow-validator-with-mocks.test.ts
View File

@@ -77,7 +77,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(true);
@@ -113,7 +113,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(false);
@@ -154,7 +154,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(false);
@@ -229,7 +229,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(true);
@@ -297,7 +297,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(false);
@@ -386,7 +386,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(false);
@@ -438,7 +438,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.warnings.some(w => w.message.includes('Outdated typeVersion'))).toBe(true);
@@ -471,7 +471,7 @@ describe('WorkflowValidator - Simple Unit Tests', () => {
};
// Act
const result = await validator.validateWorkflow(workflow);
const result = await validator.validateWorkflow(workflow as any);
// Assert
expect(result.valid).toBe(false);

410
tests/unit/validation-fixes.test.ts Normal file
View File

@@ -0,0 +1,410 @@
/**
* Test suite for validation system fixes
* Covers issues #58, #68, #70, #73
*/
import { describe, test, expect, beforeAll, afterAll } from 'vitest';
import { WorkflowValidator } from '../../src/services/workflow-validator';
import { EnhancedConfigValidator } from '../../src/services/enhanced-config-validator';
import { ToolValidation, Validator, ValidationError } from '../../src/utils/validation-schemas';
describe('Validation System Fixes', () => {
let workflowValidator: WorkflowValidator;
let mockNodeRepository: any;
beforeAll(async () => {
// Initialize test environment
process.env.NODE_ENV = 'test';
// Mock repository for testing
mockNodeRepository = {
getNode: (nodeType: string) => {
if (nodeType === 'nodes-base.webhook' || nodeType === 'n8n-nodes-base.webhook') {
return {
nodeType: 'nodes-base.webhook',
displayName: 'Webhook',
properties: [
{ name: 'path', required: true, displayName: 'Path' },
{ name: 'httpMethod', required: true, displayName: 'HTTP Method' }
]
};
}
if (nodeType === 'nodes-base.set' || nodeType === 'n8n-nodes-base.set') {
return {
nodeType: 'nodes-base.set',
displayName: 'Set',
properties: [
{ name: 'values', required: false, displayName: 'Values' }
]
};
}
return null;
}
} as any;
workflowValidator = new WorkflowValidator(mockNodeRepository, EnhancedConfigValidator);
});
afterAll(() => {
delete process.env.NODE_ENV;
});
describe('Issue #73: validate_node_minimal crashes without input validation', () => {
test('should handle empty config in validation schemas', () => {
// Test the validation schema handles empty config
const result = ToolValidation.validateNodeMinimal({
nodeType: 'nodes-base.webhook',
config: undefined
});
expect(result).toBeDefined();
expect(result.valid).toBe(false);
expect(result.errors.length).toBeGreaterThan(0);
expect(result.errors[0].field).toBe('config');
});
test('should handle null config in validation schemas', () => {
const result = ToolValidation.validateNodeMinimal({
nodeType: 'nodes-base.webhook',
config: null
});
expect(result).toBeDefined();
expect(result.valid).toBe(false);
expect(result.errors.length).toBeGreaterThan(0);
expect(result.errors[0].field).toBe('config');
});
test('should accept valid config object', () => {
const result = ToolValidation.validateNodeMinimal({
nodeType: 'nodes-base.webhook',
config: { path: '/webhook', httpMethod: 'POST' }
});
expect(result).toBeDefined();
expect(result.valid).toBe(true);
expect(result.errors).toHaveLength(0);
});
});
describe('Issue #58: validate_node_operation crashes on nested input', () => {
test('should handle invalid nodeType gracefully', () => {
expect(() => {
EnhancedConfigValidator.validateWithMode(
undefined as any,
{ resource: 'channel', operation: 'create' },
[],
'operation',
'ai-friendly'
);
}).toThrow(Error);
});
test('should handle null nodeType gracefully', () => {
expect(() => {
EnhancedConfigValidator.validateWithMode(
null as any,
{ resource: 'channel', operation: 'create' },
[],
'operation',
'ai-friendly'
);
}).toThrow(Error);
});
test('should handle non-string nodeType gracefully', () => {
expect(() => {
EnhancedConfigValidator.validateWithMode(
{ type: 'nodes-base.slack' } as any,
{ resource: 'channel', operation: 'create' },
[],
'operation',
'ai-friendly'
);
}).toThrow(Error);
});
test('should handle valid nodeType properly', () => {
const result = EnhancedConfigValidator.validateWithMode(
'nodes-base.set',
{ values: {} },
[],
'operation',
'ai-friendly'
);
expect(result).toBeDefined();
expect(typeof result.valid).toBe('boolean');
});
});
describe('Issue #70: Profile settings not respected', () => {
test('should pass profile parameter to all validation phases', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Webhook',
type: 'n8n-nodes-base.webhook',
position: [100, 200],
parameters: { path: '/test', httpMethod: 'POST' },
typeVersion: 1
},
{
id: '2',
name: 'Set',
type: 'n8n-nodes-base.set',
position: [300, 200],
parameters: { values: {} },
typeVersion: 1
}
],
connections: {
'Webhook': {
main: [[{ node: 'Set', type: 'main', index: 0 }]]
}
}
};
const result = await workflowValidator.validateWorkflow(workflow, {
validateNodes: true,
validateConnections: true,
validateExpressions: true,
profile: 'minimal'
});
expect(result).toBeDefined();
expect(result.valid).toBe(true);
// In minimal profile, should have fewer warnings/errors - just check it's reasonable
expect(result.warnings.length).toBeLessThanOrEqual(5);
});
test('should filter out sticky notes from validation', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Webhook',
type: 'n8n-nodes-base.webhook',
position: [100, 200],
parameters: { path: '/test', httpMethod: 'POST' },
typeVersion: 1
},
{
id: '2',
name: 'Sticky Note',
type: 'n8n-nodes-base.stickyNote',
position: [300, 100],
parameters: { content: 'This is a note' },
typeVersion: 1
}
],
connections: {}
};
const result = await workflowValidator.validateWorkflow(workflow);
expect(result).toBeDefined();
expect(result.statistics.totalNodes).toBe(1); // Only webhook, sticky note excluded
expect(result.statistics.enabledNodes).toBe(1);
});
test('should allow legitimate loops in cycle detection', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Manual Trigger',
type: 'n8n-nodes-base.manualTrigger',
position: [100, 200],
parameters: {},
typeVersion: 1
},
{
id: '2',
name: 'SplitInBatches',
type: 'n8n-nodes-base.splitInBatches',
position: [300, 200],
parameters: { batchSize: 1 },
typeVersion: 1
},
{
id: '3',
name: 'Set',
type: 'n8n-nodes-base.set',
position: [500, 200],
parameters: { values: {} },
typeVersion: 1
}
],
connections: {
'Manual Trigger': {
main: [[{ node: 'SplitInBatches', type: 'main', index: 0 }]]
},
'SplitInBatches': {
main: [
[{ node: 'Set', type: 'main', index: 0 }], // Done output
[{ node: 'Set', type: 'main', index: 0 }] // Loop output
]
},
'Set': {
main: [[{ node: 'SplitInBatches', type: 'main', index: 0 }]] // Loop back
}
}
};
const result = await workflowValidator.validateWorkflow(workflow);
expect(result).toBeDefined();
// Should not report cycle error for legitimate SplitInBatches loop
const cycleErrors = result.errors.filter(e => e.message.includes('cycle'));
expect(cycleErrors).toHaveLength(0);
});
});
describe('Issue #68: Better error recovery suggestions', () => {
test('should provide recovery suggestions for invalid node types', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Invalid Node',
type: 'invalid-node-type',
position: [100, 200],
parameters: {},
typeVersion: 1
}
],
connections: {}
};
const result = await workflowValidator.validateWorkflow(workflow);
expect(result).toBeDefined();
expect(result.valid).toBe(false);
expect(result.suggestions.length).toBeGreaterThan(0);
// Should contain recovery suggestions
const recoveryStarted = result.suggestions.some(s => s.includes('🔧 RECOVERY'));
expect(recoveryStarted).toBe(true);
});
test('should provide recovery suggestions for connection errors', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Webhook',
type: 'n8n-nodes-base.webhook',
position: [100, 200],
parameters: { path: '/test', httpMethod: 'POST' },
typeVersion: 1
}
],
connections: {
'Webhook': {
main: [[{ node: 'NonExistentNode', type: 'main', index: 0 }]]
}
}
};
const result = await workflowValidator.validateWorkflow(workflow);
expect(result).toBeDefined();
expect(result.valid).toBe(false);
expect(result.suggestions.length).toBeGreaterThan(0);
// Should contain connection recovery suggestions
const connectionRecovery = result.suggestions.some(s =>
s.includes('Connection errors detected') || s.includes('connection')
);
expect(connectionRecovery).toBe(true);
});
test('should provide workflow for multiple errors', async () => {
const workflow = {
nodes: [
{
id: '1',
name: 'Invalid Node 1',
type: 'invalid-type-1',
position: [100, 200],
parameters: {}
// Missing typeVersion
},
{
id: '2',
name: 'Invalid Node 2',
type: 'invalid-type-2',
position: [300, 200],
parameters: {}
// Missing typeVersion
},
{
id: '3',
name: 'Invalid Node 3',
type: 'invalid-type-3',
position: [500, 200],
parameters: {}
// Missing typeVersion
}
],
connections: {
'Invalid Node 1': {
main: [[{ node: 'NonExistent', type: 'main', index: 0 }]]
}
}
};
const result = await workflowValidator.validateWorkflow(workflow);
expect(result).toBeDefined();
expect(result.valid).toBe(false);
expect(result.errors.length).toBeGreaterThan(3);
// Should provide step-by-step recovery workflow
const workflowSuggestion = result.suggestions.some(s =>
s.includes('SUGGESTED WORKFLOW') && s.includes('Too many errors detected')
);
expect(workflowSuggestion).toBe(true);
});
});
describe('Enhanced Input Validation', () => {
test('should validate tool parameters with schemas', () => {
// Test validate_node_operation parameters
const validationResult = ToolValidation.validateNodeOperation({
nodeType: 'nodes-base.webhook',
config: { path: '/test' },
profile: 'ai-friendly'
});
expect(validationResult.valid).toBe(true);
expect(validationResult.errors).toHaveLength(0);
});
test('should reject invalid parameters', () => {
const validationResult = ToolValidation.validateNodeOperation({
nodeType: 123, // Invalid type
config: 'not an object', // Invalid type
profile: 'invalid-profile' // Invalid enum value
});
expect(validationResult.valid).toBe(false);
expect(validationResult.errors.length).toBeGreaterThan(0);
});
test('should format validation errors properly', () => {
const validationResult = ToolValidation.validateNodeOperation({
nodeType: null,
config: null
});
const errorMessage = Validator.formatErrors(validationResult, 'validate_node_operation');
expect(errorMessage).toContain('validate_node_operation: Validation failed:');
expect(errorMessage).toContain('nodeType');
expect(errorMessage).toContain('config');
});
});
});