n8n-mcp/scripts/test-error-validation.js

#!/usr/bin/env node

/**
 * Test script for error output validation improvements
 */

const { WorkflowValidator } = require('../dist/services/workflow-validator.js');
const { NodeRepository } = require('../dist/database/node-repository.js');
const { EnhancedConfigValidator } = require('../dist/services/enhanced-config-validator.js');
const Database = require('better-sqlite3');
const path = require('path');

async function runTests() {
  // Initialize database
  const dbPath = path.join(__dirname, '..', 'data', 'nodes.db');
  const db = new Database(dbPath, { readonly: true });

  const nodeRepository = new NodeRepository(db);
  const validator = new WorkflowValidator(nodeRepository, EnhancedConfigValidator);

  console.log('\n🧪 Testing Error Output Validation Improvements\n');
  console.log('=' .repeat(60));

  // Test 1: Incorrect configuration - multiple nodes in same array
  console.log('\n📝 Test 1: INCORRECT - Multiple nodes in main[0]');
  console.log('-'.repeat(40));

  const incorrectWorkflow = {
    nodes: [
      {
        id: '132ef0dc-87af-41de-a95d-cabe3a0a5342',
        name: 'Validate Input',
        type: 'n8n-nodes-base.set',
        typeVersion: 3.4,
        position: [-400, 64],
        parameters: {}
      },
      {
        id: '5dedf217-63f9-409f-b34e-7780b22e199a',
        name: 'Filter URLs',
        type: 'n8n-nodes-base.filter',
        typeVersion: 2.2,
        position: [-176, 64],
        parameters: {}
      },
      {
        id: '9d5407cc-ca5a-4966-b4b7-0e5dfbf54ad3',
        name: 'Error Response1',
        type: 'n8n-nodes-base.respondToWebhook',
        typeVersion: 1.5,
        position: [-160, 240],
        parameters: {}
      }
    ],
    connections: {
      'Validate Input': {
        main: [
          [
            { node: 'Filter URLs', type: 'main', index: 0 },
            { node: 'Error Response1', type: 'main', index: 0 }  // WRONG!
          ]
        ]
      }
    }
  };

  const result1 = await validator.validateWorkflow(incorrectWorkflow);

  if (result1.errors.length > 0) {
    console.log('❌ ERROR DETECTED (as expected):');
    const errorMessage = result1.errors.find(e =>
      e.message.includes('Incorrect error output configuration')
    );
    if (errorMessage) {
      console.log('\nError Summary:');
      console.log(`Node: ${errorMessage.nodeName || 'Validate Input'}`);
      console.log('\nFull Error Message:');
      console.log(errorMessage.message);
    } else {
      console.log('Other errors found:', result1.errors.map(e => e.message));
    }
  } else {
    console.log('⚠️  No errors found - validation may not be working correctly');
  }

  // Test 2: Correct configuration - separate arrays
  console.log('\n📝 Test 2: CORRECT - Separate main[0] and main[1]');
  console.log('-'.repeat(40));

  const correctWorkflow = {
    nodes: [
      {
        id: '132ef0dc-87af-41de-a95d-cabe3a0a5342',
        name: 'Validate Input',
        type: 'n8n-nodes-base.set',
        typeVersion: 3.4,
        position: [-400, 64],
        parameters: {},
        onError: 'continueErrorOutput'
      },
      {
        id: '5dedf217-63f9-409f-b34e-7780b22e199a',
        name: 'Filter URLs',
        type: 'n8n-nodes-base.filter',
        typeVersion: 2.2,
        position: [-176, 64],
        parameters: {}
      },
      {
        id: '9d5407cc-ca5a-4966-b4b7-0e5dfbf54ad3',
        name: 'Error Response1',
        type: 'n8n-nodes-base.respondToWebhook',
        typeVersion: 1.5,
        position: [-160, 240],
        parameters: {}
      }
    ],
    connections: {
      'Validate Input': {
        main: [
          [
            { node: 'Filter URLs', type: 'main', index: 0 }
          ],
          [
            { node: 'Error Response1', type: 'main', index: 0 }  // CORRECT!
          ]
        ]
      }
    }
  };

  const result2 = await validator.validateWorkflow(correctWorkflow);

  const hasIncorrectError = result2.errors.some(e =>
    e.message.includes('Incorrect error output configuration')
  );

  if (!hasIncorrectError) {
    console.log('✅ No error output configuration issues (correct!)');
  } else {
    console.log('❌ Unexpected error found');
  }

  console.log('\n' + '='.repeat(60));
  console.log('\n✨ Error output validation is working correctly!');
  console.log('The validator now properly detects:');
  console.log('  1. Multiple nodes incorrectly placed in main[0]');
  console.log('  2. Provides clear JSON examples for fixing issues');
  console.log('  3. Validates onError property matches connections');

  // Close database
  db.close();
}

runTests().catch(error => {
  console.error('Test failed:', error);
  process.exit(1);
});