Python Pytest装饰器@pytest.mark.parametrize详解
作者：王大力测试进阶之路
本文主要介绍了Python Pytest装饰器@pytest.mark.parametrize详解，文中通过示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
Pytest中装饰器@pytest.mark.parametrize('参数名',list)可以实现测试用例参数化，类似DDT
如：@pytest.mark.parametrize('请求方式,接口地址,传参,预期结果',[('get','www.baidu.com','{"page":1}','{"code":0,"msg":"成功"})',('post','www.baidu.com','{"page":2}','{"code":0,"msg":"成功"}')])
1、第一个参数是字符串，多个参数中间用逗号隔开
2、第二个参数是list,多组数据用元祖类型;传三个或更多参数也是这样传。list的每个元素都是一个元组，元组里的每个元素和按参数顺序一一对应
3、传一个参数 @pytest.mark.parametrize('参数名'，list) 进行参数化
4、传两个参数@pytest.mark.parametrize('参数名1，参数名2'，[(参数1_data[0], 参数2_data[0]),(参数1_data[1], 参数2_data[1])]) 进行参数化
import pytest
#单参数单值
@pytest.mark.parametrize("user",["18221124104"])
def test(user):
print(user)
assert user=="18221124104"
"C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
============================= test session starts =============================
platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
rootdir: C:\Users\wangli\PycharmProjects\Test\test
collected 1 item
test03.py 18221124104
.
============================== 1 passed in 0.15s ==============================
Process finished with exit code 0
#单参数多值
@pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
def test(user):
print(user)
assert user=="18221124104"
"C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
============================= test session starts =============================
platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
rootdir: C:\Users\wangli\PycharmProjects\Test\test
collected 3 items
test03.py 18221124104
.18200000000
F18200000001
F
================================== FAILURES ===================================
______________________________ test[18200000000] ______________________________
user = '18200000000'
@pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
def test(user):
print(user)
> assert user=="18221124104"
E AssertionError
test03.py:74: AssertionError
______________________________ test[18200000001] ______________________________
user = '18200000001'
@pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
def test(user):
print(user)
> assert user=="18221124104"
E AssertionError
test03.py:74: AssertionError
========================= 2 failed, 1 passed in 0.21s =========================
Process finished with exit code 0
#多参数多值
@pytest.mark.parametrize("user,pwd",[("18221124104",111111),("18200000000",111111)])
def test(user,pwd):
print(user,pwd)
"C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
============================= test session starts =============================
platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
rootdir: C:\Users\wangli\PycharmProjects\Test\test
collected 2 items
test03.py 18221124104 111111
.18200000000 111111
.
============================== 2 passed in 0.03s ==============================
Process finished with exit code 0
# 使用内置的mark.xfail标记为失败的用例就不运行了，直接跳过显示xfailed
@pytest.mark.parametrize("user,pwd",[("18221124104",111111),pytest.param("18200000000",111111,marks=pytest.mark.xfail)])
def test(user,pwd):
print(user,pwd)
assert user == "18221124104"
assert pwd== 111111
"C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
============================= test session starts =============================
platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
rootdir: C:\Users\wangli\PycharmProjects\Test\test
collected 2 items
test03.py 18221124104 111111
.18200000000 111111
x
======================== 1 passed, 1 xfailed in 0.14s =========================
Process finished with exit code 0
#若要获得多个参数化参数的所有组合，可以堆叠参数化装饰器
@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","test03.py"])
"C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
============================= test session starts =============================
platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
rootdir: C:\Users\wangli\PycharmProjects\Test\test
collected 4 items
test03.py 测试数据组合：x->0, y->2
.测试数据组合：x->1, y->2
.测试数据组合：x->0, y->3
.测试数据组合：x->1, y->3
.
============================== 4 passed in 0.03s ==============================
Process finished with exit code 0
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