pytest xfail的使用

1.pytest.fail(reason=' ')：

在测试用例中调用，该方法之后的代码不再运行，结果中标记为xfail，如下所示：

class TestPytest():
    def test01(self):
        print('test01')
        pytest.xfail(reason='标记成xfail不执行,后面的代码不执行')
        assert 1 == 1
if __name__ == '__main__':
    pytest.main(['-vs', 'test_xfail.py'])

============================= 1 xfailed in 0.06s ==============================

Process finished with exit code 0
test01
XFAIL (标记成xfail不执行,后面的代码不执行)
self = <testcase.pytest.test.test_xfail.TestPytest object at 0x000002090B02B608>

可以看出，test01函数运行时，控制台中打印了“test01”,最后的结果标记为xfail.

2.@pytest.mark.xfail：  --在函数或者方法中使用

期望测试用例是失败的，但是不会影响测试用例的的执行;

如果测试用例执行失败的则结果是xfail（不会额外显示出错误信息）;

如果测试用例执行成功的则结果是xpass;

class TestPytest():

    @pytest.mark.xfail
    def test02(self):
        assert 's' in 'an'
        print('test02')

    @pytest.mark.xfail
    def test03(self):
        assert 's' in 'this'
        print('test03')


if __name__ == '__main__':
    pytest.main(['-vs', 'test_xfail.py'])

test_xfail.py::TestPytest::test02 XFAIL
test_xfail.py::TestPytest::test03 test03
XPASS

======================== 1 xfailed, 1 xpassed in 0.08s ========================

Process finished with exit code 0

运行结果分析：test02 标记为xfail （因为断言是失败的），test03 标记为xpass（断言是成功的）且打印了‘test03’.