Add branch protection guide and PR CI workflow

Introduces .github/BRANCH_PROTECTION_GUIDE.md to document branch protection and CI requirements. Adds .github/workflows/pr-checks.yml for PR validation, including unit tests and code quality checks. Updates TESTING_QUICKSTART.md and tests/TEST_SUMMARY.md to use consistent status check notation and clarify test suite details.

.github/BRANCH_PROTECTION_GUIDE.md

@@ -0,0 +1,291 @@
+# Branch Protection Configuration Guide
+
+This guide explains how to configure branch protection rules for the `main` branch to ensure all tests pass before merging.
+
+## Quick Setup
+
+### 1. Navigate to Branch Protection Settings
+
+1. Go to your repository on GitHub
+2. Click **Settings** → **Branches**
+3. Click **Add rule** or **Edit** for the `main` branch
+
+### 2. Configure Required Settings
+
+Enable the following options:
+
+#### Required Status Checks
+[x] **Require status checks to pass before merging**
+- [x] Require branches to be up to date before merging
+- Required checks:
+  - `Test Validation` (from pr-checks.yml)
+  - `Run Tests` (from tests.yml)
+  - `test-validation` (job name)
+
+#### Additional Protections (Recommended)
+- [x] Require a pull request before merging
+  - Required approvals: 1 (recommended)
+  - Dismiss stale reviews when new commits are pushed
+- [x] Require conversation resolution before merging
+- [x] Do not allow bypassing the above settings
+
+## CI Workflows Overview
+
+### 1. `tests.yml` - Main Test Workflow
+
+**Triggers:**
+- Push to `main` branch
+- Pull requests to `main` branch
+
+**Jobs:**
+- `test`: Runs unit tests (required to pass)
+- `integration-test`: Runs integration tests with OpenSearch (optional)
+- `lint`: Code quality checks (optional)
+- `test-summary`: Aggregates results
+
+**Required for merge:** [x] Yes (test job must pass)
+
+### 2. `pr-checks.yml` - PR-specific Validation
+
+**Triggers:**
+- Pull request opened/updated to `main`
+
+**Jobs:**
+- `test-validation`: Strict unit test validation
+- `code-quality`: Linting and code quality
+- `pr-validation`: Final validation check
+
+**Required for merge:** [x] Yes (test-validation job must pass)
+
+## What Tests Must Pass?
+
+### Required [x]
+- All unit tests (77+ tests)
+- Runtime: ~2 seconds
+- No external dependencies
+
+### Optional [INFO]
+- Integration tests (require OpenSearch)
+- Linting checks
+- Code quality checks
+
+## Test Commands Run in CI
+
+```bash
+# Unit tests (REQUIRED - must pass for merge)
+uv run pytest tests/ -v \
+  -m "not requires_opensearch and not requires_langflow" \
+  --cov=src \
+  --cov-report=xml \
+  --cov-fail-under=1
+
+# Integration tests (OPTIONAL - informational)
+uv run pytest tests/ -v \
+  -m "integration and requires_opensearch" \
+  --cov=src \
+  --cov-report=xml
+```
+
+## PR Workflow
+
+### Contributor Flow
+
+1. **Create feature branch**
+   ```bash
+   git checkout -b feature/my-feature
+   ```
+
+2. **Make changes and run tests locally**
+   ```bash
+   make test-unit
+   ```
+
+3. **Push changes**
+   ```bash
+   git push origin feature/my-feature
+   ```
+
+4. **Create Pull Request**
+   - CI automatically runs
+   - Status checks appear on PR
+
+5. **Review CI Results**
+   - [x] Green checks = ready to merge
+   - [FAIL] Red checks = fix issues
+
+6. **Merge when tests pass**
+   - All required checks must be green
+   - PR can be merged to main
+
+### Status Check Results
+
+#### [x] Success
+```
+[x] Test Validation
+[x] Run Tests
+[x] All required tests passed
+```
+**Action:** PR can be merged
+
+#### [FAIL] Failure
+```
+[FAIL] Test Validation
+[FAIL] Some tests failed
+```
+**Action:** Fix failing tests and push changes
+
+## Local Testing Before Push
+
+Ensure tests pass locally before pushing:
+
+```bash
+# Quick check (recommended)
+make test-unit
+
+# Full test suite
+make test
+
+# With coverage
+make test-coverage
+
+# Specific tests
+make test-api
+make test-service
+```
+
+## Troubleshooting CI Failures
+
+### Tests fail in CI but pass locally
+
+1. **Check Python version**
+   ```bash
+   python --version  # Should be 3.13
+   ```
+
+2. **Ensure dependencies are in sync**
+   ```bash
+   uv sync --extra dev
+   ```
+
+3. **Run tests in CI mode**
+   ```bash
+   uv run pytest tests/ -v -m "not requires_opensearch and not requires_langflow"
+   ```
+
+### Permission errors in CI
+
+- Ensure workflow has necessary permissions
+- Check GitHub Actions settings
+
+### Flaky tests
+
+- Integration tests may be flaky (that's why they're optional)
+- Unit tests should be stable
+- Report flaky tests as issues
+
+## Bypassing Branch Protection (Emergency Only)
+
+[WARN] **Not recommended for normal workflow**
+
+If you're a repository admin and need to bypass:
+
+1. Go to Settings → Branches
+2. Temporarily uncheck protection rules
+3. Merge PR
+4. **Immediately re-enable protection**
+
+[WARN] **Always fix tests instead of bypassing!**
+
+## Configuration Examples
+
+### Minimal Configuration (Recommended)
+
+```yaml
+Branch Protection Rules for main:
+☑ Require status checks to pass before merging
+  ☑ Require branches to be up to date
+  Required checks:
+    - test-validation
+    - Run Tests
+☑ Require a pull request before merging
+```
+
+### Strict Configuration (Team Environment)
+
+```yaml
+Branch Protection Rules for main:
+☑ Require status checks to pass before merging
+  ☑ Require branches to be up to date
+  Required checks:
+    - test-validation
+    - Run Tests
+    - code-quality
+☑ Require a pull request before merging
+  Number of approvals: 2
+  ☑ Dismiss stale reviews
+☑ Require conversation resolution
+☑ Require signed commits
+☑ Include administrators
+```
+
+## Monitoring Test Health
+
+### View Test Results
+
+1. **In Pull Request:**
+   - Check "Checks" tab
+   - View detailed logs
+   - See test output
+
+2. **In Actions Tab:**
+   - View all workflow runs
+   - Check historical pass rates
+   - Monitor performance
+
+### Test Metrics
+
+- **Success Rate:** Should be 100% for unit tests
+- **Runtime:** ~2 seconds for unit tests
+- **Coverage:** Growing toward 70%+
+
+## FAQ
+
+**Q: Can I merge if integration tests fail?**
+A: Yes, integration tests are optional. Only unit tests are required.
+
+**Q: How do I skip CI for a commit?**
+A: You can't skip required checks. All PRs must pass tests.
+
+**Q: What if tests are flaky?**
+A: Fix the flaky tests. Unit tests should never be flaky.
+
+**Q: Can I run CI locally?**
+A: Yes, use `make test-unit` to run the same tests CI runs.
+
+**Q: How do I add new required checks?**
+A: Update branch protection settings and add job name to required checks.
+
+## Support
+
+- Tests failing? Check test logs in GitHub Actions
+- Need help? See `tests/README.md` for testing guide
+- Issues? Open a GitHub issue
+
+## Summary
+
+[x] **Required for merge to main:**
+1. All unit tests pass (77+ tests)
+2. No test failures
+3. Code builds successfully
+
+[FAIL] **Blocks merge:**
+- Any unit test failure
+- Build failures
+- Missing required checks
+
+ **Optional:**
+- Integration tests
+- Linting checks
+- Code coverage improvements
+
+Enable branch protection to enforce these rules automatically!

.github/workflows/pr-checks.yml

@@ -0,0 +1,122 @@
+name: PR Checks
+
+on:
+  pull_request:
+    branches: [main]
+    types: [opened, synchronize, reopened]
+
+jobs:
+  test-validation:
+    name: Test Validation
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python 3.13
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          enable-cache: true
+
+      - name: Install dependencies
+        run: |
+          uv sync --extra dev
+
+      - name: Run unit tests with strict requirements
+        id: unit_tests
+        run: |
+          uv run pytest tests/ -v \
+            -m "not requires_opensearch and not requires_langflow" \
+            --cov=src \
+            --cov-report=term-missing \
+            --cov-report=xml \
+            --cov-fail-under=1 \
+            --tb=short
+
+      - name: Test Summary
+        if: always()
+        run: |
+          if [ "${{ steps.unit_tests.outcome }}" == "success" ]; then
+            echo "✅ All unit tests passed"
+            echo "PR is ready for review"
+          else
+            echo "❌ Tests failed"
+            echo "Please fix failing tests before merging"
+            exit 1
+          fi
+
+      - name: Comment PR with results
+        if: always() && github.event_name == 'pull_request'
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const outcome = '${{ steps.unit_tests.outcome }}';
+            const icon = outcome === 'success' ? '✅' : '❌';
+            const status = outcome === 'success' ? 'passed' : 'failed';
+
+            const body = `## ${icon} Test Results
+
+            Unit tests ${status}!
+
+            - Python Version: 3.13
+            - Tests Run: Unit tests (excluding integration)
+            - Status: ${status}
+
+            ${outcome === 'success' ? '✅ Ready for merge' : '❌ Please fix failing tests'}
+            `;
+
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: body
+            });
+
+  code-quality:
+    name: Code Quality
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python 3.13
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies
+        run: |
+          uv sync --extra dev
+          uv pip install ruff
+
+      - name: Run ruff linter
+        run: |
+          uv run ruff check src/ tests/ --output-format=github
+        continue-on-error: true
+
+  pr-validation:
+    name: PR Validation
+    runs-on: ubuntu-latest
+    needs: [test-validation, code-quality]
+    if: always()
+
+    steps:
+      - name: Check all jobs
+        run: |
+          if [ "${{ needs.test-validation.result }}" != "success" ]; then
+            echo "❌ Test validation failed"
+            exit 1
+          fi
+
+          echo "✅ All PR checks passed"
+          echo "This PR is ready to be merged to main"

TESTING_QUICKSTART.md

@@ -39,10 +39,10 @@ tests/
 
 ## Current Status
 
-✅ **77 passing unit tests**
+[x] **77 passing unit tests**
-✅ **~2 second runtime**
+[x] **~2 second runtime**
-✅ **No mocks - using real fixtures**
+[x] **No mocks - using real fixtures**
-✅ **Ready for CI/CD**
+[x] **Ready for CI/CD**
 
 ## Quick Commands
 

tests/TEST_SUMMARY.md

@@ -1,53 +1,53 @@
 # OpenRAG Backend Test Suite Summary
 
-## ✅ Implementation Complete
+## [x] Implementation Complete
 
 ### Test Coverage Created
 
 #### 1. **Utils Tests** (41 tests)
-- ✅ `test_embeddings.py` - Embedding dimension handling and index body creation (15 tests)
+- [x] `test_embeddings.py` - Embedding dimension handling and index body creation (15 tests)
-- ✅ `test_hash_utils.py` - Hashing utilities for document IDs (26 tests)
+- [x] `test_hash_utils.py` - Hashing utilities for document IDs (26 tests)
 
 #### 2. **API Tests** (15 tests)
-- ✅ `test_health.py` - Health check and basic API functionality (5 tests)
+- [x] `test_health.py` - Health check and basic API functionality (5 tests)
-- ✅ `test_documents.py` - Document API endpoints (5 tests)
+- [x] `test_documents.py` - Document API endpoints (5 tests)
-- ✅ `test_search.py` - Search API endpoints (5 tests)
+- [x] `test_search.py` - Search API endpoints (5 tests)
 
 #### 3. **Service Tests** (8 tests)
-- ✅ `test_document_service.py` - Document service operations (4 tests)
+- [x] `test_document_service.py` - Document service operations (4 tests)
-- ✅ `test_search_service.py` - Search service operations (4 tests)
+- [x] `test_search_service.py` - Search service operations (4 tests)
 
 #### 4. **Connector Tests** (8 tests)
-- ✅ `test_base.py` - Connector initialization and configuration (8 tests)
+- [x] `test_base.py` - Connector initialization and configuration (8 tests)
 
 #### 5. **Config Tests** (5 tests)
-- ✅ `test_settings.py` - Configuration and environment variables (5 tests)
+- [x] `test_settings.py` - Configuration and environment variables (5 tests)
 
 ### Test Infrastructure
 
 #### Pytest Configuration
-- ✅ `pytest.ini` - Test discovery, markers, coverage settings
+- [x] `pytest.ini` - Test discovery, markers, coverage settings
-- ✅ `conftest.py` - Root fixtures and configuration
+- [x] `conftest.py` - Root fixtures and configuration
-- ✅ Coverage reporting (HTML, XML, terminal)
+- [x] Coverage reporting (HTML, XML, terminal)
 
 #### Fixture System (No Mocks!)
-- ✅ `fixtures/opensearch_fixtures.py` - Real OpenSearch test fixtures
+- [x] `fixtures/opensearch_fixtures.py` - Real OpenSearch test fixtures
-- ✅ `fixtures/service_fixtures.py` - Service instance fixtures
+- [x] `fixtures/service_fixtures.py` - Service instance fixtures
-- ✅ `fixtures/connector_fixtures.py` - Connector fixtures
+- [x] `fixtures/connector_fixtures.py` - Connector fixtures
-- ✅ `fixtures/app_fixtures.py` - Application-level fixtures
+- [x] `fixtures/app_fixtures.py` - Application-level fixtures
 
 #### Makefile Commands
-- ✅ `make test` - Run all tests
+- [x] `make test` - Run all tests
-- ✅ `make test-unit` - Unit tests only
+- [x] `make test-unit` - Unit tests only
-- ✅ `make test-integration` - Integration tests only
+- [x] `make test-integration` - Integration tests only
-- ✅ `make test-api` - API tests
+- [x] `make test-api` - API tests
-- ✅ `make test-service` - Service tests
+- [x] `make test-service` - Service tests
-- ✅ `make test-connector` - Connector tests
+- [x] `make test-connector` - Connector tests
-- ✅ `make test-coverage` - Tests with coverage report
+- [x] `make test-coverage` - Tests with coverage report
-- ✅ `make test-verbose` - Verbose output
+- [x] `make test-verbose` - Verbose output
-- ✅ `make test-failed` - Re-run failed tests
+- [x] `make test-failed` - Re-run failed tests
-- ✅ `make test-quick` - Quick unit tests
+- [x] `make test-quick` - Quick unit tests
-- ✅ `make test-specific TEST=path` - Run specific test
+- [x] `make test-specific TEST=path` - Run specific test
 
 ### Dependencies Added
 ```toml
@@ -60,16 +60,16 @@ dev = [
 ]
 ```
 
-## 📊 Test Results
+##  Test Results
 
 ```
 Total Tests: 97 (77 unit, 20 integration)
 Passing: 77/77 unit tests (100%)
 Runtime: ~2 seconds (unit tests)
-Status: ✅ ALL PASSING
+Status: [x] ALL PASSING
 ```
 
-## 🎯 Test Categories
+##  Test Categories
 
 Tests are organized with pytest markers:
 
@@ -81,7 +81,7 @@ Tests are organized with pytest markers:
 - `@pytest.mark.requires_opensearch` - Requires OpenSearch
 - `@pytest.mark.requires_langflow` - Requires Langflow
 
-## 📁 Test Structure
+##  Test Structure
 
 ```
 tests/
@@ -102,7 +102,7 @@ tests/
     └── app_fixtures.py
 ```
 
-## 🚀 Quick Start
+##  Quick Start
 
 ```bash
 # Install test dependencies
@@ -118,7 +118,7 @@ make test-coverage
 make test-api
 ```
 
-## 🧪 Key Features
+##  Key Features
 
 ### 1. Fixture-Based Testing (No Mocks!)
 - Real OpenSearch clients for integration tests
@@ -148,19 +148,19 @@ make test-api
 - Coverage enforcement
 - Configurable markers
 
-## 📈 Coverage Goals
+##  Coverage Goals
 
 Current: Growing from 1.44% (utils only)
 Target: 70%+ overall coverage
 
 Tested modules:
-- ✅ utils/embeddings.py - 100%
+- [x] utils/embeddings.py - 100%
-- ✅ utils/hash_utils.py - 88%
+- [x] utils/hash_utils.py - 88%
 - ⏳ services/* - To be expanded
 - ⏳ api/* - To be expanded
 - ⏳ connectors/* - To be expanded
 
-## 🔧 Integration Tests
+##  Integration Tests
 
 Integration tests require external services:
 
@@ -175,7 +175,7 @@ make test-integration
 pytest -m "not requires_opensearch and not requires_langflow"
 ```
 
-## 📝 Sample Test
+##  Sample Test
 
 ```python
 import pytest
@@ -187,19 +187,19 @@ class TestEmbeddingDimensions:
         assert get_embedding_dimensions("text-embedding-ada-002") > 0
 ```
 
-## 🎓 Best Practices Implemented
+##  Best Practices Implemented
 
-1. ✅ Use fixtures instead of mocks
+1. [x] Use fixtures instead of mocks
-2. ✅ Organize tests by category with markers
+2. [x] Organize tests by category with markers
-3. ✅ Keep unit tests fast
+3. [x] Keep unit tests fast
-4. ✅ Proper resource cleanup
+4. [x] Proper resource cleanup
-5. ✅ Test one thing per test
+5. [x] Test one thing per test
-6. ✅ Descriptive test names
+6. [x] Descriptive test names
-7. ✅ Follow AAA pattern (Arrange, Act, Assert)
+7. [x] Follow AAA pattern (Arrange, Act, Assert)
-8. ✅ Independent tests
+8. [x] Independent tests
-9. ✅ Clear documentation
+9. [x] Clear documentation
 
-## 🔄 Next Steps
+##  Next Steps
 
 To expand test coverage:
 
@@ -210,13 +210,13 @@ To expand test coverage:
 5. Add flow management tests
 6. Increase coverage to 70%+
 
-## 📚 Documentation
+##  Documentation
 
 - `tests/README.md` - Comprehensive testing guide
 - `pytest.ini` - Configuration reference
 - `Makefile` - Available commands
 
-## ✨ Highlights
+##  Highlights
 
 - **No mocks used** - Real fixtures for better integration testing
 - **77 passing tests** - All unit tests green