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Python Pytest裝飾器@pytest.mark.parametrize詳解

更新時間：2021年08月23日 11:19:55 作者：王大力測試進階之路

本文主要介紹了Python Pytest裝飾器@pytest.mark.parametrize詳解，文中通過示例代碼介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們可以參考一下

Pytest中裝飾器@pytest.mark.parametrize('參數(shù)名',list)可以實現(xiàn)測試用例參數(shù)化，類似DDT
如：@pytest.mark.parametrize('請求方式,接口地址,傳參,預(yù)期結(jié)果',[('get','www.baidu.com','{"page":1}','{"code":0,"msg":"成功"})',('post','www.baidu.com','{"page":2}','{"code":0,"msg":"成功"}')])

1、第一個參數(shù)是字符串，多個參數(shù)中間用逗號隔開

2、第二個參數(shù)是list,多組數(shù)據(jù)用元祖類型;傳三個或更多參數(shù)也是這樣傳。list的每個元素都是一個元組，元組里的每個元素和按參數(shù)順序一一對應(yīng)

3、傳一個參數(shù) @pytest.mark.parametrize('參數(shù)名'，list) 進行參數(shù)化

4、傳兩個參數(shù)@pytest.mark.parametrize('參數(shù)名1，參數(shù)名2'，[(參數(shù)1_data[0], 參數(shù)2_data[0]),(參數(shù)1_data[1], 參數(shù)2_data[1])]) 進行參數(shù)化

import pytest
#單參數(shù)單值
@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
 
#單參數(shù)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

#多參數(shù)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
 
# 使用內(nèi)置的mark.xfail標記為失敗的用例就不運行了，直接跳過顯示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
 
#若要獲得多個參數(shù)化參數(shù)的所有組合，可以堆疊參數(shù)化裝飾器
@pytest.mark.parametrize("x", [0, 1])
@pytest.mark.parametrize("y", [2, 3])
def test_foo(x, y):
    print("測試數(shù)據(jù)組合：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 測試數(shù)據(jù)組合：x->0, y->2
.測試數(shù)據(jù)組合：x->1, y->2
.測試數(shù)據(jù)組合：x->0, y->3
.測試數(shù)據(jù)組合：x->1, y->3
.
 
============================== 4 passed in 0.03s ==============================
 
Process finished with exit code 0

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