Testing

Running Tests

Using uv (recommended):

uv sync --extra dev
uv run pytest tests/

Using pip:

pip install -e ".[dev]"
pytest tests/

Run a specific test file or class:

uv run pytest tests/test_code_smell_detector.py
uv run pytest tests/test_code_smell_detector.py::TestFoo

Run with coverage:

uv run pytest tests/ --cov=code_quality_analyzer

Test Structure

The test suite includes:

• test_code_smell_detector.py — unit tests for all per-file and cross-file code smells

• test_architectural_smell_detector.py — unit tests for architectural smell detection

• test_structural_smell_detector.py — unit tests for OO metrics and structural smells

• test_config_handler.py — tests for configuration loading and validation

• test_main.py — integration tests for the CLI and overall analysis flow

Example Tests

def test_detect_long_method(code_smell_detector, tmp_path):
    test_file = tmp_path / "long_method.py"
    test_file.write_text("\n".join([f"    x = {i}" for i in range(50)]))

    code_smell_detector.detect_smells(str(test_file))
    assert any("Long Method" in smell.smell_type for smell in code_smell_detector.code_smells)

def test_detect_god_object(architectural_smell_detector, tmp_path):
    test_file = tmp_path / "god_object.py"
    test_file.write_text("\n".join([f"def func{i}(): pass" for i in range(26)]))

    architectural_smell_detector.detect_smells(str(tmp_path))
    assert any("God Object" in smell.smell_type for smell in architectural_smell_detector.architectural_smells)

Writing New Tests

When adding new features or smell detectors, add corresponding tests. Follow the existing test structure and use the pytest fixtures defined in conftest.py.