import { defineConfig } from 'vitest/config';

export default defineConfig({
  test: {
    // Use jsdom for DOM environment
    environment: 'jsdom',
    
    // Test file patterns
    include: ['tests/frontend/**/*.test.{js,ts}'],
    
    // Setup files
    setupFiles: ['tests/frontend/setup.js'],
    
    // Coverage configuration
    // dashboard_core.js contains testable business logic extracted from main.js
    // main.js is a browser script with DOM side effects - not included in coverage
    coverage: {
      provider: 'v8',
      reporter: ['text', 'html', 'lcov'],
      include: ['app/dashboard_core.js'],
      exclude: ['node_modules', 'tests', 'app/main.js'],
      thresholds: {
        statements: 80,
        branches: 70,
        functions: 70,
        lines: 80,
      },
    },
    
    // Globals like describe, it, expect
    globals: true,
    
    // Reporter
    reporter: 'verbose',
  },
});