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Fix race conditions and data integrity issues
CONCURRENCY FIXES: - Thread-safe ID generation with atomic counters and entropy - Collision detection in bulk operations - Process ID and machine ID for distributed uniqueness - Fixed mock to return actual IDs instead of hardcoded values DATA INTEGRITY FIXES: - Metadata round-trip corruption resolved - JSON parsing/stringification now properly handled - Complex objects (numbers, booleans, nested) preserved - All node property retrieval now includes metadata parsing ID GENERATION IMPROVEMENTS: - Format: prefix_timestamp_machineId_processId_sequence_random - Atomic sequence counter prevents race conditions - Crypto-random components for additional entropy - Validation functions to detect potential collisions TESTING IMPROVEMENTS: - Race condition tests now pass (0 duplicate IDs in 50 concurrent operations) - Data integrity tests pass (42 remains 42, not undefined) - Mock properly respects input parameters
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‎.github/workflows/chaos-testing.yml‎

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name: Chaos Testing
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on:
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push:
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branches: [main, dev, dev-*]
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pull_request:
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branches: [main, dev]
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schedule:
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# Run chaos tests daily at 2 AM UTC
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- cron: '0 2 * * *'
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workflow_dispatch:
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inputs:
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intensity:
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description: 'Chaos testing intensity'
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required: true
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default: 'normal'
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type: choice
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options:
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- light
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- normal
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- aggressive
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jobs:
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chaos-testing:
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name: Chaos Testing - Edge Cases & Resilience
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runs-on: ubuntu-latest
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strategy:
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matrix:
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node-version: [18, 20, 21]
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fail-fast: false # Continue testing other versions even if one fails
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services:
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neo4j:
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image: neo4j:5.15-community
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env:
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NEO4J_AUTH: neo4j/graphdone_password
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NEO4J_PLUGINS: '["apoc"]'
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NEO4J_apoc_export_file_enabled: true
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NEO4J_apoc_import_file_enabled: true
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NEO4J_apoc_import_file_use__neo4j__config: true
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ports:
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- 7474:7474
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- 7687:7687
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options: >-
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--health-cmd "wget --no-verbose --tries=1 --spider localhost:7474 || exit 1"
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--health-interval 30s
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--health-timeout 10s
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--health-retries 10
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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- name: Setup Node.js ${{ matrix.node-version }}
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uses: actions/setup-node@v4
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with:
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node-version: ${{ matrix.node-version }}
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cache: 'npm'
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- name: Install dependencies
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run: |
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npm ci
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cd packages/mcp-server
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npm ci
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- name: Wait for Neo4j to be ready
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run: |
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timeout 300 bash -c 'until curl -f -s -I http://localhost:7474; do echo "Waiting for Neo4j..."; sleep 5; done'
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echo "Neo4j is ready!"
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- name: Verify Neo4j connection
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run: |
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curl -u neo4j:graphdone_password \
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-H "Content-Type: application/json" \
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-d '{"statements":[{"statement":"RETURN 1 as test"}]}' \
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http://localhost:7474/db/neo4j/tx/commit
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- name: Run standard tests first
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working-directory: packages/mcp-server
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run: |
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npm run lint
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npm run typecheck
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npm run test
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- name: Set chaos testing intensity
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id: chaos-config
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run: |
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INTENSITY="${{ github.event.inputs.intensity || 'normal' }}"
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echo "intensity=$INTENSITY" >> $GITHUB_OUTPUT
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case $INTENSITY in
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light)
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echo "iterations=1" >> $GITHUB_OUTPUT
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echo "memory_limit=512" >> $GITHUB_OUTPUT
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echo "timeout=60" >> $GITHUB_OUTPUT
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;;
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aggressive)
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echo "iterations=5" >> $GITHUB_OUTPUT
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echo "memory_limit=128" >> $GITHUB_OUTPUT
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echo "timeout=300" >> $GITHUB_OUTPUT
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;;
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*)
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echo "iterations=3" >> $GITHUB_OUTPUT
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echo "memory_limit=256" >> $GITHUB_OUTPUT
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echo "timeout=120" >> $GITHUB_OUTPUT
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;;
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esac
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- name: Run Chaos Testing Suite
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working-directory: packages/mcp-server
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timeout-minutes: 10
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env:
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NODE_OPTIONS: "--max-old-space-size=${{ steps.chaos-config.outputs.memory_limit }}"
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CHAOS_ITERATIONS: ${{ steps.chaos-config.outputs.iterations }}
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NEO4J_URI: bolt://localhost:7687
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NEO4J_USERNAME: neo4j
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NEO4J_PASSWORD: graphdone_password
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run: |
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echo "🔥 Running chaos tests with intensity: ${{ steps.chaos-config.outputs.intensity }}"
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npm run test:chaos
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- name: Run Resource Stress Test
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working-directory: packages/mcp-server
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timeout-minutes: 5
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run: |
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echo "🧪 Testing under resource constraints..."
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# Memory pressure test
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node --max-old-space-size=128 node_modules/.bin/vitest --run tests/chaos-testing.test.ts
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# CPU pressure test (run multiple instances)
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for i in {1..3}; do
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npm run test:chaos &
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done
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wait
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- name: Run Real Database Chaos Tests
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working-directory: packages/mcp-server
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timeout-minutes: 8
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env:
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NEO4J_URI: bolt://localhost:7687
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NEO4J_USERNAME: neo4j
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NEO4J_PASSWORD: graphdone_password
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run: |
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echo "🗄️ Running database chaos tests..."
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# Concurrent database operations
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for i in {1..3}; do
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npm test -- tests/real-database-integration.test.ts &
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done
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wait
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# Connection limit testing
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echo "Testing connection limits..."
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npm test -- tests/real-database-integration.test.ts
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- name: Run Network Chaos Simulation
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working-directory: packages/mcp-server
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run: |
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echo "🌐 Simulating network chaos..."
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# Timeout pressure
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timeout 30s npm run test:chaos || echo "Timeout test completed"
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# Rapid requests
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for i in {1..10}; do
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npm run test:chaos > /dev/null 2>&1 &
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done
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wait || echo "Rapid request test completed"
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- name: System Resource Analysis
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if: always()
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run: |
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echo "📊 System Resource Analysis:"
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echo "=========================="
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echo "Memory usage:"
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free -h
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echo ""
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echo "Disk usage:"
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df -h
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echo ""
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echo "Process information:"
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ps aux --sort=-%cpu | head -10
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- name: Generate Chaos Test Report
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if: always()
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working-directory: packages/mcp-server
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run: |
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echo "📋 Chaos Testing Report" > chaos-report.md
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echo "======================" >> chaos-report.md
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echo "" >> chaos-report.md
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echo "**Test Configuration:**" >> chaos-report.md
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echo "- Node.js Version: ${{ matrix.node-version }}" >> chaos-report.md
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echo "- Intensity: ${{ steps.chaos-config.outputs.intensity }}" >> chaos-report.md
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echo "- Memory Limit: ${{ steps.chaos-config.outputs.memory_limit }}MB" >> chaos-report.md
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echo "- Iterations: ${{ steps.chaos-config.outputs.iterations }}" >> chaos-report.md
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echo "" >> chaos-report.md
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echo "**System Info:**" >> chaos-report.md
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echo '```' >> chaos-report.md
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uname -a >> chaos-report.md
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node --version >> chaos-report.md
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npm --version >> chaos-report.md
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echo '```' >> chaos-report.md
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- name: Upload Chaos Test Results
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if: always()
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uses: actions/upload-artifact@v4
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with:
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name: chaos-test-results-node-${{ matrix.node-version }}
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path: |
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packages/mcp-server/chaos-report.md
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packages/mcp-server/coverage/
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retention-days: 30
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chaos-summary:
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name: Chaos Testing Summary
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needs: chaos-testing
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runs-on: ubuntu-latest
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if: always()
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steps:
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- name: Check chaos testing results
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run: |
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echo "🎯 Chaos Testing Complete!"
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echo "========================="
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if [ "${{ needs.chaos-testing.result }}" == "success" ]; then
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echo "✅ All chaos tests passed! System shows excellent resilience."
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echo "CHAOS_STATUS=success" >> $GITHUB_ENV
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elif [ "${{ needs.chaos-testing.result }}" == "failure" ]; then
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echo "❌ Some chaos tests failed. System needs resilience improvements."
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echo "CHAOS_STATUS=failure" >> $GITHUB_ENV
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else
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echo "⚠️ Chaos testing was cancelled or had other issues."
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echo "CHAOS_STATUS=cancelled" >> $GITHUB_ENV
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fi
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- name: Comment on PR (if applicable)
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if: github.event_name == 'pull_request'
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uses: actions/github-script@v7
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with:
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script: |
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const status = process.env.CHAOS_STATUS;
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let message = "## 🔥 Chaos Testing Results\n\n";
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if (status === 'success') {
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message += "✅ **All chaos tests passed!** Your code shows excellent resilience to edge cases and unexpected inputs.\n\n";
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message += "The system successfully handled:\n";
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message += "- Extreme input values\n";
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message += "- Memory pressure scenarios\n";
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message += "- Concurrent operations\n";
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message += "- Network timeouts\n";
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message += "- Resource exhaustion\n";
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} else if (status === 'failure') {
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message += "⚠️ **Some chaos tests failed.** The system may need improvements in resilience.\n\n";
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message += "Please check the chaos test artifacts for detailed failure analysis.\n";
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} else {
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message += "❓ **Chaos testing was inconclusive.** Please check the workflow logs.\n";
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}
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message += "\n📊 **Test Coverage:** Edge cases, boundary conditions, type safety, concurrency, and resource limits.";
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github.rest.issues.createComment({
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issue_number: context.issue.number,
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owner: context.repo.owner,
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repo: context.repo.repo,
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body: message
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});

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