Commit f346536
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Add Comprehensive Backend Unit Test Suite with Ginkgo Framework (#460)
## Summary
This PR introduces a comprehensive unit testing infrastructure for the
ambient-code backend using the Ginkgo/Gomega testing framework. The
addition includes **13,000+ lines of test coverage** across all major
handler components, along with critical **security hardening** and
**architectural improvements** to support robust testing.
## 🧪 Test Coverage Added
- **Complete handler test coverage**: 15+ test files covering all major
API endpoints
- **Test framework infrastructure**: Comprehensive test utilities, fake
clients, and helper functions
- **GitHub Actions integration**: New CI workflow for automated unit
test execution
- **Developer tooling**: Enhanced Makefile with test commands and
documentation
### Key Test Areas Covered
- **Authentication & Authorization**: Token validation, RBAC, service
account extraction
- **Session Management**: CRUD operations, lifecycle management, status
updates
- **Project Operations**: Creation, listing, validation, multi-tenant
isolation
- **Repository Management**: Git operations, seeding, content handling
- **Secret Management**: API key storage, token minting, secure handling
- **GitHub/GitLab Integration**: OAuth flows, webhook handling, API
interactions
- **Health Endpoints**: Service readiness and liveness checks
## 🔒 Security Hardening (Non-Test Changes)
### Critical Security Fixes
**Removed authentication bypass vulnerability**
(`handlers/middleware.go:359-410`):
- **REMOVED**: `isLocalDevEnvironment()` function that checked
environment variables (`DISABLE_AUTH`, `ENVIRONMENT`)
- **REMOVED**: `getLocalDevK8sClients()` function that bypassed user
authentication
- **SECURITY IMPACT**: Eliminates risk of accidental authentication
bypass in production environments
**Enhanced token validation** (`handlers/middleware.go:57-108`):
- **BUG FIX**: Improved token parsing logic to handle malformed
Authorization headers
- **ENHANCED**: Added support for `X-Remote-User` header (OpenShift
OAuth proxy format)
- **SECURITY**: Enforced "token required" semantics with no fallback
mechanisms
### Architecture Improvements
**Build tag separation for production vs test code**:
- **NEW**: `k8s_clients_for_request_prod.go` - Immutable production
authentication path
- **NEW**: `k8s_clients_for_request_testtag.go` - Secure test-only
client injection
- **SECURITY**: Prevents function-pointer override vulnerabilities in
production builds
**Type safety improvements**:
- **ENHANCED**: Changed `K8sClientMw` from `*kubernetes.Clientset` to
`kubernetes.Interface`
- **BENEFIT**: Enables proper dependency injection for testing without
compromising production type safety
## 🛠 Development Infrastructure
### New GitHub Actions Workflow
- **File**: `.github/workflows/backend-unit-tests.yml`
- **Features**:
- Automatic test execution on PRs affecting backend code
- JUnit XML report generation with HTML visualization
- Test result summaries in PR comments
- Configurable test filtering and namespaces
### Enhanced Build System
- **Updated**: `components/backend/Makefile` with comprehensive test
commands
- **Added**: `install-tools` target for Ginkgo CLI installation
- **Enhanced**: Test execution with coverage reporting and filtering
### Documentation
- **NEW**: `TEST_GUIDE.md` - Comprehensive 877-line testing guide
- **UPDATED**: `README.md` - Removed DISABLE_AUTH documentation, added
secure local dev instructions
## 🔧 Why These Non-Test Changes Were Required
### 1. Authentication Bypass Removal
**Problem**: The original `DISABLE_AUTH` mechanism created a production
security vulnerability
**Solution**: Complete removal of environment-variable-based
authentication bypass
**Impact**: All requests now require valid user tokens - no exceptions
### 2. Testability Architecture
**Problem**: Original code tightly coupled to production Kubernetes
clients
**Solution**: Interface-based dependency injection with build tag
separation
**Impact**: Unit tests can inject fake clients without affecting
production behavior
### 3. Type Safety for Testing
**Problem**: Direct type assertions (`*kubernetes.Clientset`) prevented
mock/fake client injection
**Solution**: Interface-based typing (`kubernetes.Interface`) supporting
both real and fake implementations
**Impact**: Robust testing with proper type safety maintained
### 4. Token Parsing Robustness
**Problem**: Fragile token extraction logic that failed on edge cases
**Solution**: Enhanced parsing with support for multiple header formats
**Impact**: Better compatibility with various authentication proxy
configurations
## 📊 Test Metrics
- **Files Added**: 25+ test files
- **Test Coverage**: 13,000+ lines of test code
- **Dependencies**: Ginkgo v2.27.3, Gomega v1.38.3
- **CI Integration**: Automated execution on all backend changes
- **Test Categories**: Unit, integration, handlers, auth, git operations
## 🚀 Benefits
1. **Confidence**: Comprehensive test coverage enables safe refactoring
and feature development
2. **Security**: Elimination of authentication bypass vulnerabilities
3. **Maintainability**: Well-structured test framework supports
long-term development
4. **CI/CD**: Automated testing prevents regressions
5. **Documentation**: Extensive testing guide enables team onboarding
---
## Breaking Changes
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56 files changed
+13199
-635
lines changed- .github/workflows
- components/backend
- handlers
- tests
- config
- constants
- integration
- gitlab
- k8sclient
- logger
- regression
- test_utils
- types
- tests
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