Charon/docs/reports/archive/E2E_BLOCKER_RESOLUTION.md

Phase 4 UAT - E2E Critical Blocker Resolution Guide

Status: 🔴 CRITICAL BLOCKER Date: February 10, 2026 Next Action: FIX FRONTEND RENDERING

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Summary

All 111 Phase 4 E2E tests failed because the React frontend is not rendering the main UI element within the 5-second timeout.

TimeoutError: page.waitForSelector: Timeout 5000ms exceeded.
Call log:
  - waiting for locator('[role="main"]') to be visible

35 tests failed immediately when trying to find [role="main"] in the DOM. 74 tests never ran due to the issue. Release is blocked until this is fixed.

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Root Cause

The React application is not initializing properly:

✅ Working:

• Docker container is healthy
• Backend API is responding (/api/v1/health)
• HTML page loads (includes script/CSS references)
• Port 8080 is accessible

❌ Broken:

• JavaScript bundle not executing
• React root element (#root) not being used
• [role="main"] component never created
• Application initialization fails/times out

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Quick Fixes to Try (in order)

Option 1: Clean Rebuild (Most Likely to Work)

# Navigate to project
cd /projects/Charon

# Clean rebuild of E2E environment
.github/skills/scripts/skill-runner.sh docker-rebuild-e2e

# Run a single test to verify
npx playwright test tests/auth.setup.ts --project=firefox

Option 2: Check Frontend Build

# Verify frontend was built during Docker build
docker exec charon-e2e ls -lah /app/dist/

# Check if dist directory has content
docker exec charon-e2e find /app/dist -type f | head -20

Option 3: Debug with Browser Console

# Run test in debug mode to see errors
npx playwright test tests/phase4-integration/01-admin-user-e2e-workflow.spec.ts --project=firefox --debug

# Open browser inspector to check console errors

Option 4: Check Environment Variables

# Verify frontend environment in container
docker exec charon-e2e env | grep -i "VITE\|REACT\|API"

# Check if API endpoint is configured correctly
docker exec charon-e2e cat /app/dist/index.html | grep "src="

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Testing After Fix

Step 1: Rebuild

.github/skills/scripts/skill-runner.sh docker-rebuild-e2e

Step 2: Verify Container is Healthy

# Check container status
docker ps | grep charon-e2e

# Test health endpoint
curl -s http://localhost:8080/api/v1/health

Step 3: Run Single Test

# Quick test to verify frontend is now rendering
npx playwright test tests/auth.setup.ts --project=firefox

Step 4: Run Full Suite

# If single test passes, run full Phase 4 suite
npx playwright test tests/phase4-uat/ tests/phase4-integration/ --project=firefox

# Expected result: 111 tests passing

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What Happens After Fix

Once frontend rendering is fixed and E2E tests pass:

1. ✅ Verify E2E tests: 111/111 passing
2. ✅ Run Backend Coverage (≥85% required)
3. ✅ Run Frontend Coverage (≥87% required)
4. ✅ Type Check: npm run type-check
5. ✅ Pre-commit Hooks: pre-commit run --all-files
6. ✅ Security Scans: Trivy + Docker Image + CodeQL
7. ✅ Linting: Go + Frontend + Markdown
8. ✅ Generate Final QA Report
9. ✅ Release Ready

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Key Files

File	Purpose
docs/reports/qa_report.md	Full QA verification report
Dockerfile	Frontend build configuration
frontend/*/	React source code
tests/phase4-*/	E2E test files
.docker/compose/docker-compose.playwright-local.yml	E2E environment config

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Prevention for Future

• Add frontend health check to E2E setup
• Add console error detection to test framework
• Add JavaScript bundle verification step
• Monitor React initialization timing

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Support

For additional options, see: QA Report