py.test examples

2.3.5_before.py

import pytest

@pytest.mark.parametrize("input", "expected", [
    ("3+5", 8),
    ("2+4", 6),
    ])
def test_evalPassing(input, expected):
    assert eval(input) == expected


@pytest.mark.xfail
@pytest.mark.parametrize("input", "expected", [
    pytest.mark.xfail(("6*9", 42)),
    ])
def test_evalXfail(input, expected):
    assert eval(input) == expected

2.4.0_after.py

import pytest


@pytest.mark.parametrize("input", "expected", [
    ("3+5", 8),
    ("2+4", 6),
    pytest.mark.xfail(("6*9", 42)),
    ])
def test_eval(input, expected):
    assert eval(input) == expected