pytest 심화

Python code

# pytest 테스트 예제 (실행: pytest test_example.py -v)
import pytest

# 기본 테스트
def test_addition():
    assert 1 + 1 == 2

def test_string():
    assert "hello".upper() == "HELLO"

# 예외 테스트
def test_zero_division():
    with pytest.raises(ZeroDivisionError):
        1 / 0

def test_value_error_message():
    with pytest.raises(ValueError, match="invalid"):
        raise ValueError("invalid input")

# 마커
@pytest.mark.slow
def test_slow_operation():
    import time
    time.sleep(0.01)
    assert True

@pytest.mark.skip(reason="아직 구현 안 됨")
def test_future_feature():
    pass

@pytest.mark.skipif(
    __import__("sys").version_info < (3, 11),
    reason="Python 3.11+ 필요"
)
def test_new_feature():
    assert True

# 근사값 비교
def test_floating_point():
    assert 0.1 + 0.2 == pytest.approx(0.3)
    assert [0.1, 0.2] == pytest.approx([0.1, 0.2], abs=1e-10)

# 실행: pytest -v --tb=short -k "not slow"
print("pytest 테스트 패턴 준비 완료")