Daily Test Coverage Improver - Phase 3 Initial Analysis

[github-actions[bot]]

Current Test Coverage Status

I successfully ran the test coverage analysis for the Backend.AI WebUI repository. Here are my findings:

React Project Coverage (Baseline)

Current Coverage:

• Lines: 637/15,110 (4.22%)
• Branches: 446/10,735 (4.15%)

Test Results:

• ✅ 367 tests passed
• ❌ 3 tests failed (gpt-tokenizer TextDecoder issue in jest environment)
• ⚠️ 12 test suites failed to run (ES module import issues with mock files)

Key Findings

1. Very Low Coverage: The React project has extremely low test coverage at only 4.22% line coverage
2. Core Files Untested: Critical files like App.tsx, global-stores.ts, and routes.tsx have 0% coverage
3. Many Components Untested: Most page components and many hooks have 0% coverage
4. GraphQL Generated Files: As expected, auto-generated __generated__ files have 0% coverage (this is normal)

Test Suite Issues

Some test suites are currently failing due to:

• ES module import compatibility issues with mock files (matchMedia.mock.js, backendAiClientEsm.mock.js)
• TextDecoder not being available in jest environment for gpt-tokenizer tests

Areas With High Impact Potential

Based on the coverage analysis, here are the most impactful areas to focus on:

1. Core Application Files (0% coverage)

• src/App.tsx - Main application component
• src/global-stores.ts - Global state management
• src/routes.tsx - Routing configuration

2. Hooks (mixed coverage, many at 0%)

• useWebUIConfig.ts - 0% coverage, 97 lines
• useWebUIMenuItems.tsx - 0% coverage, 107 lines
• useResourceLimitAndRemaining.ts - Already has tests but could be expanded
• useBackendAIImageMetadata.ts - 100% coverage ✅

3. Page Components (all at 0%)

• DashboardPage.tsx - 30 lines
• ComputeSessionListPage.tsx - 59 lines
• ChatPage.tsx - 52 lines
• All other page components

4. Well-Tested Components (reference examples)

• TabCounter.ts - 98.65% coverage ✅
• useValidateServiceName.tsx - 100% coverage ✅
• useValidateSessionName.tsx - 100% coverage ✅

Coverage Steps Action Status

✅ The .github/actions/daily-test-improver/coverage-steps/action.yml file exists and is mostly working
⚠️ Some test suite failures need investigation
✅ Coverage report generation is successful

Recommended Next Steps

1. Fix Test Suite Issues: Address ES module import problems in failing test suites
2. Focus on High-Impact Hooks: Start with useWebUIConfig and useWebUIMenuItems
3. Add Component Tests: Target page components with simple, testable logic
4. Incremental Improvement: Aim for 10-20% coverage initially, then incrementally improve

How to Control this Workflow

You can use these commands to control the Daily Test Coverage Improver workflow:

# Disable the workflow
gh aw disable daily-test-improver --repo lablup/backend.ai-webui

# Enable the workflow
gh aw enable daily-test-improver --repo lablup/backend.ai-webui

# Run the workflow manually
gh aw run daily-test-improver --repo lablup/backend.ai-webui

# Run multiple times in sequence
gh aw run daily-test-improver --repo lablup/backend.ai-webui --repeat (number-of-repeats)

# View workflow logs
gh aw logs daily-test-improver --repo lablup/backend.ai-webui

What Happens Next

• The workflow will continue working on Phase 3 on subsequent runs
• Each run will target a specific area for test coverage improvement
• Progress will be documented with evidence of coverage improvements
• Pull requests will be created as draft PRs for maintainer review

Coverage Analysis Files

The coverage reports are available in the workflow artifacts:

• React: coverage/react/lcov-report/index.html
• Full coverage data: coverage-steps.log

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Workflow Run: #{{github.run_id}}
Repository: lablup/backend.ai-webui
Branch: {{github.ref}}
Triggered by: {{github.actor}}

AI generated by Daily Test Coverage Improver