File size: 1,492 Bytes
c3a34c2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | """Example pytest fixtures and test functions.
A small but realistic conftest-style module showing common pytest patterns:
fixtures with different scopes, parametrization, and skip/xfail markers.
"""
from __future__ import annotations
import os
import tempfile
from pathlib import Path
import pytest
@pytest.fixture(scope="session")
def session_tmpdir() -> Path:
"""Session-scoped temporary directory shared across all tests."""
with tempfile.TemporaryDirectory(prefix="pytest-session-") as d:
yield Path(d)
@pytest.fixture
def sample_config() -> dict[str, object]:
"""Per-test configuration dict."""
return {"debug": True, "timeout": 30, "retries": 3}
@pytest.fixture
def env_var(monkeypatch: pytest.MonkeyPatch) -> str:
"""Set and restore an environment variable for one test."""
monkeypatch.setenv("APP_MODE", "test")
return os.environ["APP_MODE"]
@pytest.mark.parametrize("value,expected", [(1, 1), (2, 4), (3, 9), (4, 16)])
def test_square(value: int, expected: int) -> None:
assert value * value == expected
def test_config_defaults(sample_config: dict[str, object]) -> None:
assert sample_config["debug"] is True
assert sample_config["timeout"] == 30
def test_env_override(env_var: str) -> None:
assert env_var == "test"
@pytest.mark.skipif(os.name == "nt", reason="POSIX-only path semantics")
def test_session_dir_exists(session_tmpdir: Path) -> None:
assert session_tmpdir.exists() and session_tmpdir.is_dir()
|