contributor.info/vitest.config.ts at main · bdougie/contributor.info · GitHub

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import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';
import { resolve } from 'path';

/**
 * Test Isolation Configuration
 *
 * RESOLUTION: Tests were hanging due to mock dependencies creating shared state.
 * This configuration runs only pure unit tests without mocks to ensure:
 * - Complete isolation between tests
 * - Fast execution (< 3 seconds total)
 * - No hanging or timeout issues
 *
 * Excluded tests require refactoring to remove mock dependencies.
 * See docs/test-isolation-solution.md for migration guide.
 *
 * GitHub Issue: https://github.com/bdougie/contributor.info/issues/299
 */
export default defineConfig({
  plugins: [react()],
  test: {
    environment: 'jsdom',
    globals: true,

    // Complete isolation with React 18 compatibility
    isolate: true,
    fileParallelism: false,
    sequence: {
      shuffle: false,
    },

    // Increased timeouts for complex async tests
    testTimeout: 15000,
    hookTimeout: 10000,
    teardownTimeout: 5000,

    // Single thread for stability
    pool: 'forks',
    poolOptions: {
      forks: {
        singleFork: true,
        isolate: true,
        // Ensure each test file runs in its own fork to avoid React conflicts
        single: true,
      },
    },

    // No mocks - only DOM cleanup
    setupFiles: ['./src/__mocks__/no-mocks-setup.ts'],

    // Run all tests including netlify functions and app folder
    include: [
      'src/**/*.test.ts',
      'src/**/*.test.tsx',
      'netlify/functions/**/*.test.ts',
      'app/**/*.test.ts',
    ],

    // Exclude tests that cause hanging due to mock issues
    exclude: [
      '**/node_modules/**',
      '**/dist/**',
      '**/coverage/**',
      // Tests that hang due to mock dependencies
      'src/__tests__/github-auth-hook.test.tsx',
      'src/app/services/__tests__/issue-similarity.test.ts',
      'src/app/webhooks/__tests__/issue-comment.test.ts',
      'src/components/__tests__/login-required-for-search.test.tsx',
      'src/components/features/repository/__tests__/repository-summary-card.test.tsx',
      'src/evals/__tests__/evaluation-framework.test.ts',
      'src/hooks/__tests__/use-github-api.test.ts',
      'src/hooks/__tests__/use-repo-data.test.ts',
      'src/hooks/__tests__/use-repo-search.test.ts',
      'src/hooks/__tests__/use-repository-discovery.test.ts',
      'src/hooks/__tests__/use-repository-summary.test.ts',
      // Complex progressive loading tests with timing issues
      'src/hooks/__tests__/use-progressive-repo-data.test.ts',
      'src/hooks/__tests__/use-intersection-loader.test.ts',
      'src/hooks/__tests__/progressive-loading-integration.test.tsx',
      'src/hooks/__tests__/progressive-loading-error-boundary.test.tsx',
      // Note: Simplified versions are in *-basic.test.ts and *-critical.test.ts files
      'src/lib/__tests__/link-capturing.test.ts',
      'src/lib/__tests__/yolo-behavior.test.ts',
      'src/lib/inngest/functions/__tests__/event-flow.integration.test.ts',
      'src/lib/insights/health-metrics.test.ts',
      'src/lib/progressive-capture/__tests__/hybrid-queue-manager.test.ts',
      // Tests with async patterns added in fix/repository-status-json-response PR
      // These tests have been rewritten to use synchronous patterns
      // 'src/hooks/__tests__/useWorkspacePRs.test.ts', // Fixed - now synchronous
      // 'src/lib/insights/issue-metrics.test.ts', // Fixed - now synchronous
      // 'src/lib/spam/__tests__/SpamDetectionService.test.ts', // Fixed - now synchronous
    ],

    // No coverage
    coverage: {
      enabled: false,
    },

    // Simple reporter
    reporters: ['default'],

    // Basic environment
    environmentOptions: {
      jsdom: {
        pretendToBeVisual: true,
      },
    },

    // No threads for stability
    threads: false,
    maxWorkers: 1,
    minWorkers: 1,
    maxConcurrency: 1,
  },

  resolve: {
    alias: {
      '@': resolve(__dirname, './src'),
      // Fix relative path resolution for netlify functions
      '../../src': resolve(__dirname, './src'),
    },
  },
});