Python Pytest装饰器@pytest.mark.parametrize详解
上官鸿祯
转自：Python Pytest装饰器@pytest.mark.parametrize详解
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
1 import pytest
2 #单参数单值
3 @pytest.mark.parametrize("user",["18221124104"])
4 def test(user):
5 print(user)
6 assert user=="18221124104"
7
8
9 "C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
10 ============================= test session starts =============================
11 platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
12 rootdir: C:\Users\wangli\PycharmProjects\Test\test
13 collected 1 item
14
15 test03.py 18221124104
16 .
17
18 ============================== 1 passed in 0.15s ==============================
19
20 Process finished with exit code 0
21
22
23
24 #单参数多值
25 @pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
26 def test(user):
27 print(user)
28 assert user=="18221124104"
29
30
31 "C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
32 ============================= test session starts =============================
33 platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
34 rootdir: C:\Users\wangli\PycharmProjects\Test\test
35 collected 3 items
36
37 test03.py 18221124104
38 .18200000000
39 F18200000001
40 F
41
42 ================================== FAILURES ===================================
43 ______________________________ test[18200000000] ______________________________
44
45 user = '18200000000'
46
47 @pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
48 def test(user):
49 print(user)
50 > assert user=="18221124104"
51 E AssertionError
52
53 test03.py:74: AssertionError
54 ______________________________ test[18200000001] ______________________________
55
56 user = '18200000001'
57
58 @pytest.mark.parametrize("user",["18221124104","18200000000","18200000001"])
59 def test(user):
60 print(user)
61 > assert user=="18221124104"
62 E AssertionError
63
64 test03.py:74: AssertionError
65 ========================= 2 failed, 1 passed in 0.21s =========================
66
67 Process finished with exit code 0
68
69
70
71 #多参数多值
72 @pytest.mark.parametrize("user,pwd",[("18221124104",111111),("18200000000",111111)])
73 def test(user,pwd):
74 print(user,pwd)
75
76
77 "C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
78 ============================= test session starts =============================
79 platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
80 rootdir: C:\Users\wangli\PycharmProjects\Test\test
81 collected 2 items
82
83 test03.py 18221124104 111111
84 .18200000000 111111
85 .
86
87 ============================== 2 passed in 0.03s ==============================
88
89 Process finished with exit code 0
90
91
92
93 # 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
94 @pytest.mark.parametrize("user,pwd",[("18221124104",111111),pytest.param("18200000000",111111,marks=pytest.mark.xfail)])
95 def test(user,pwd):
96 print(user,pwd)
97 assert user == "18221124104"
98 assert pwd== 111111
99
100
101
102 "C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
103 ============================= test session starts =============================
104 platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
105 rootdir: C:\Users\wangli\PycharmProjects\Test\test
106 collected 2 items
107
108 test03.py 18221124104 111111
109 .18200000000 111111
110 x
111
112 ======================== 1 passed, 1 xfailed in 0.14s =========================
113
114 Process finished with exit code 0
115
116
117
118
119 #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
120 @pytest.mark.parametrize("x", [0, 1])
121 @pytest.mark.parametrize("y", [2, 3])
122 def test_foo(x, y):
123 print("测试数据组合：x->%s, y->%s" % (x, y))
124
125 if __name__=="__main__":
126 pytest.main(["-s","test03.py"])
127
128
129 "C:\Program Files\Python35\python.exe" C:/Users/wangli/PycharmProjects/Test/test/test03.py
130 ============================= test session starts =============================
131 platform win32 -- Python 3.5.2, pytest-5.1.2, py-1.8.0, pluggy-0.12.0
132 rootdir: C:\Users\wangli\PycharmProjects\Test\test
133 collected 4 items
134
135 test03.py 测试数据组合：x->0, y->2
136 .测试数据组合：x->1, y->2
137 .测试数据组合：x->0, y->3
138 .测试数据组合：x->1, y->3
139 .
140
141 ============================== 4 passed in 0.03s ==============================
142
143 Process finished with exit code 0
144
145 #json传参
146 user = [
147 {
148 "aa": 'aa1',
149 "bb": 'bb1'
150 },
151 {
152 "aa": 'aa2',
153 "bb": 'bb2'
154 }
155 ]
156 @pytest.mark.parametrize("user", user)
157 def test(user):
158 print("aa: %s, bb: %s" % (user['aa'], user['bb']))
159
160 ===================== test session starts =====================
161 platform darwin -- Python 3.9.2, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
162 rootdir: /Users/admin/PythonProject/audit_auto_test/audit_web_i18n_test
163 collected 2 items
164
165 tests/test_pytest.py ..
166 ====================== 2 passed in 0.01s ======================————————————————
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原文链接：https://blog.csdn.net/qq_36502272/article/details/100986069
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