Add E2E test infrastructure with Playwright

[liamgold]

Summary

Adds end-to-end testing infrastructure using Playwright and xUnit, with automated post-deployment smoke tests running against production.

Changes

Test Infrastructure

• Created tests/Goldfinch.Tests.E2E/ project with Playwright and xUnit
• Added smoke tests for key pages: Home, Blog List, Blog Detail, About, Speaking
• Tests are content-agnostic and use dynamic content discovery
• Blog detail tests fetch the first blog post dynamically to avoid hardcoded dependencies
• Configured to inherit project standards (ImplicitUsings disabled, Nullable enabled)

CI/CD Integration

• Added .github/workflows/e2e-tests.yml - separate workflow for post-deployment testing
• Triggers automatically after successful deployment
• Waits 60 seconds for Azure to stabilize before running tests
• Tests run against live production site (https://www.goldfinch.me)
• Uploads test results as artifacts

Configuration

• Fixed .gitignore pattern *.e2e → **/*.e2e to allow .E2E directory
• Added test dependencies to Directory.Packages.props:
  • Microsoft.Playwright
  • Microsoft.NET.Test.Sdk
  • xUnit packages
  • coverlet.collector
• Added test project to solution with proper folder structure

Documentation

• Updated CLAUDE.md with test commands and CI/CD information
• Added tests/Goldfinch.Tests.E2E/README.md with local testing instructions

Test Coverage

All tests are structural checks (not content-specific):

• ✅ Pages return 200 status codes
• ✅ Pages have titles and headings
• ✅ Navigation elements exist
• ✅ Blog posts are displayed
• ✅ No JavaScript console errors
• ✅ Pagination exists

Local Testing

# Terminal 1 - Start app
cd src/Goldfinch.Web
dotnet run

# Terminal 2 - Run tests
dotnet test tests/Goldfinch.Tests.E2E/Goldfinch.Tests.E2E.csproj

Production Testing

After merging to main:

1. Deploy workflow runs and deploys to Azure
2. E2E workflow automatically triggers
3. Waits 60s for deployment to stabilize
4. Runs smoke tests against production
5. Reports results (visible in Actions tab)

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR adds comprehensive end-to-end testing infrastructure using Playwright and xUnit, with automated post-deployment smoke tests running against production.

• Adds E2E test project with Playwright for automated browser testing
• Creates smoke tests for all key pages (Home, Blog, About, Speaking) with content-agnostic validation
• Implements CI/CD integration that automatically runs tests after successful deployment

Reviewed Changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/Goldfinch.Tests.E2E/Goldfinch.Tests.E2E.csproj	Test project configuration with Playwright and xUnit dependencies
tests/Goldfinch.Tests.E2E/PlaywrightTestBase.cs	Base class providing common browser setup and configuration
tests/Goldfinch.Tests.E2E/Pages/*.cs	Page-specific test classes for smoke testing key site functionality
tests/Goldfinch.Tests.E2E/README.md	Documentation for local testing and project structure
.github/workflows/e2e-tests.yml	GitHub Actions workflow for post-deployment testing
Goldfinch.sln	Updated solution file to include test project
Directory.Packages.props	Added test-related package versions
CLAUDE.md	Updated documentation with testing information

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