pytest/test_xfail.py

import pytest

def test_pass():
  ...


def test_fail():
  a,b = 1,2
  assert a == b

@pytest.mark.xfail
def test_xfail():
  a,b = 1,2
  assert a == b


@pytest.mark.xfail
def test_xpass():
  a,b = 1,1
  assert a == b