参数化parametrize

parametrizing

　　1.使用pytest.mark.parametrize装饰器实现测试用例参数化

import pytest
@pytest.mark.parametrize("test_input,expected",
                         [('3+5', 8),
                          ('1+3', 4),
                          ('6*4', 30), ])
def test_eval(test_input, expected):
    assert eval(test_input) == expected

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

　　2.可以标记单个测试实例在参数话，如使用内置的mark.xfail

import pytest
@pytest.mark.parametrize("test_input,expected",[
    ('3+5',8),
    ('1+4',5),
    pytest.param('4*6', 4, marks=pytest.mark.xfail),
    ])

def test_eval(test_input, expected):
    print("---------开始用例---------")
    assert eval(test_input) ==expected

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

参数组合

　　如果想获得多个参数化参数的所有组合，可以堆叠参数化装饰器

# 参数组合
import pytest
@pytest.mark.parametrize("x", [0, 1])
@pytest.mark.parametrize("y", [2, 3])
def test_foo(x, y):
    print("测试数据组合：x->%s,y->%s" % (x, y))

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