Add test suite and configuration

tests/test_analysers.py

@@ -0,0 +1,176 @@
+import pytest
+from datetime import datetime
+from unittest.mock import patch, MagicMock
+
+
+class TestCommitPatternAnalyzer:
+    """Test CommitPatternAnalyzer."""
+
+    @pytest.fixture
+    def mock_commit(self):
+        return MagicMock(
+            sha="abc123",
+            message="Test commit",
+            author_name="John Doe",
+            author_email="john@test.com",
+            committed_datetime=datetime(2024, 1, 15, 10, 30, 0),
+            author_datetime=datetime(2024, 1, 15, 10, 30, 0),
+            additions=50,
+            deletions=10,
+            files_changed=["src/main.py"],
+            parents=[],
+            is_merge=False,
+        )
+
+    def test_analyze_empty_repo(self):
+        """Test analyzing empty repository."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[]):
+            from src.analyzers import CommitPatternAnalyzer
+            analyzer = CommitPatternAnalyzer(MagicMock(), days=30)
+            result = analyzer.analyze()
+            assert result.total_commits == 0
+            assert result.unique_authors == 0
+
+    def test_analyze_with_commits(self, mock_commit):
+        """Test analyzing repository with commits."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[mock_commit]):
+            from src.analyzers import CommitPatternAnalyzer
+            analyzer = CommitPatternAnalyzer(MagicMock(), days=30)
+            result = analyzer.analyze()
+            assert result.total_commits == 1
+            assert result.unique_authors == 1
+
+
+class TestCodeChurnAnalyzer:
+    """Test CodeChurnAnalyzer."""
+
+    @pytest.fixture
+    def mock_commit(self):
+        return MagicMock(
+            sha="abc123",
+            message="Large commit",
+            author_name="Jane",
+            author_email="jane@test.com",
+            committed_datetime=datetime.now(),
+            author_datetime=datetime.now(),
+            additions=1000,
+            deletions=100,
+            files_changed=["src/main.py"],
+            lines_changed_count=1100,
+            parents=[],
+            is_merge=False,
+        )
+
+    def test_analyze_empty_repo(self):
+        """Test analyzing empty repository."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[]):
+            from src.analyzers import CodeChurnAnalyzer
+            analyzer = CodeChurnAnalyzer(MagicMock(), days=30)
+            result = analyzer.analyze()
+            assert result.total_lines_added == 0
+            assert result.total_lines_deleted == 0
+
+    def test_churn_threshold(self, mock_commit):
+        """Test churn threshold detection."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[mock_commit]):
+            from src.analyzers import CodeChurnAnalyzer
+            analyzer = CodeChurnAnalyzer(MagicMock(), days=30, churn_threshold=500)
+            result = analyzer.analyze()
+            assert len(result.high_churn_files) >= 0
+
+
+class TestVelocityAnalyzer:
+    """Test VelocityAnalyzer."""
+
+    @pytest.fixture
+    def mock_commits(self):
+        commits = []
+        for i in range(7):
+            commit = MagicMock(
+                sha=f"sha{i}",
+                message=f"Commit {i}",
+                author_name="John",
+                author_email="john@test.com",
+                committed_datetime=datetime(2024, 1, i + 1, 10, 0, 0),
+                author_datetime=datetime(2024, 1, i + 1, 10, 0, 0),
+                additions=10,
+                deletions=5,
+                files_changed=["src/file.py"],
+                lines_changed_count=15,
+                parents=[],
+                is_merge=False,
+            )
+            commits.append(commit)
+        return commits
+
+    def test_analyze_empty_repo(self):
+        """Test analyzing empty repository."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[]):
+            from src.analyzers import VelocityAnalyzer
+            analyzer = VelocityAnalyzer(MagicMock(), days=30)
+            result = analyzer.analyze()
+            assert result.total_commits == 0
+            assert result.commits_per_day == 0.0
+
+    def test_velocity_calculation(self, mock_commits):
+        """Test velocity calculation."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=mock_commits):
+            from src.analyzers import VelocityAnalyzer
+            analyzer = VelocityAnalyzer(MagicMock(), days=7)
+            result = analyzer.analyze()
+            assert result.total_commits == 7
+            assert result.commits_per_day == 1.0
+
+
+class TestRiskyCommitDetector:
+    """Test RiskyCommitDetector."""
+
+    @pytest.fixture
+    def mock_large_commit(self):
+        return MagicMock(
+            sha="abc123",
+            message="Huge commit",
+            author_name="John",
+            author_email="john@test.com",
+            committed_datetime=datetime.now(),
+            author_datetime=datetime.now(),
+            additions=1000,
+            deletions=500,
+            files_changed=["src/main.py"],
+            lines_changed_count=1500,
+            parents=[],
+            is_merge=False,
+        )
+
+    @pytest.fixture
+    def mock_merge_commit(self):
+        return MagicMock(
+            sha="def456",
+            message="Merge branch",
+            author_name="Jane",
+            author_email="jane@test.com",
+            committed_datetime=datetime.now(),
+            author_datetime=datetime.now(),
+            additions=10,
+            deletions=5,
+            files_changed=["src/main.py"],
+            lines_changed_count=15,
+            parents=["parent1", "parent2"],
+            is_merge=True,
+        )
+
+    def test_detect_large_commits(self, mock_large_commit):
+        """Test detecting large commits."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[mock_large_commit]):
+            from src.analyzers import RiskyCommitDetector
+            detector = RiskyCommitDetector(MagicMock(), days=30, large_commit_threshold=500)
+            result = detector.analyze()
+            assert len(result.large_commits) == 1
+
+    def test_detect_merge_commits(self, mock_merge_commit):
+        """Test detecting merge commits."""
+        with patch('src.analyzers.git_repository.GitRepository.get_commits', return_value=[mock_merge_commit]):
+            from src.analyzers import RiskyCommitDetector
+            detector = RiskyCommitDetector(MagicMock(), days=30)
+            result = detector.analyze()
+            assert len(result.merge_commits) == 1