1.fixture_作用范围

@pytest.fixture(scoop=”session”/“module”/“class”/“function”)中的scoop参数可以控制fixture的作用范围。

  • 作用范围 ： **session > module > class > function**

    1.function级别

    每个testcase（N个fixture）都会调用执行对应的fixture函数【N个fixture则进行N次“setup…teardown过程”】
    简记 【function级别】每1个testcase，都会对引入的每个fixture函数执行一次【setup…teardown过程】
    1. # function级别：每个testcase执行的时候，fixture都会被调用
    2. import pytest
    3. @pytest.fixture()
    4. def getUsername():
    5.   print("获取username")
    6.   a = "admin"
    7.   return a
    8. @pytest.fixture(scope="function")
    9. def getPassword():
    10.   print("获取password")
    11.   b = "123456"
    12.   return b
    13. def test_username(getUsername):
    14.   print("当前的username:{username}".format(username=getUsername))
    15.   assert getUsername == "admin"
    16. def test_password(getUsername, getPassword):
    17.   print("当前的password:{password}".format(password=getPassword))
    18.   assert getPassword == "123456"
    fun1.png

    2.class级别

    1个“测试Class”（一个类可能有N个testcase）不管testcase使用（N个fixture)，最后“每个fixture只会执行一次【“setup…teardown过程”】”
    简记 【Class级别】每1个类，只会对每个fixture函数执行一次【setup…teardown过程】
    1. #此脚本的主要功能 ：fixture(scoop="class")
    2. import pytest
    3. @pytest.fixture(scope="class")
    4. def getUsername():
    5.   print("获取username")
    6.   a = "admin"
    7.   return a
    8. @pytest.fixture(scope="class")
    9. def getPassword():
    10.   print("获取password")
    11.   b = "123456"
    12.   return b
    13. class Test01():# 每1个类，只会对每个fixture函数执行一次【setup...teardown过程】
    14.   def test_username1(self,getUsername):
    15.       print("当前的username:{username}".format(username=getUsername))
    16.       assert getUsername == "admin"
    17.   def test_username2(self,getUsername):
    18.       print("当前的username:{username}".format(username=getUsername))
    19.       assert getUsername == "admin"
    20.   def test_password(self,getUsername, getPassword):
    21.       print("当前的password:{password}".format(password=getPassword))
    22.       assert getPassword == "123456"
    23. class Test02():每1个类，只会对每个fixture函数执行一次【setup...teardown过程】
    24.   def test_username1(self,getUsername):
    25.       print("当前的username:{username}".format(username=getUsername))
    26.       assert getUsername == "admin"
    27.   # def test_username2(self,getUsername):
    28.   #     print("当前的username:{username}".format(username=getUsername))
    29.   #     assert getUsername == "admin"
    30.   def test_password(self,getUsername, getPassword):
    31.       print("当前的password:{password}".format(password=getPassword))
    32.       assert getPassword == "123456"
    class1.png

    3.module级别

    每1个测试文件（test_xx.py），只会对每个fixture函数执行一次【setup…teardown过程】
    简记 【Module级别】每1个测试文件（test_xx.py），只会对每个fixture函数执行一次【setup…teardown过程】
    1. #此脚本的主要功能 ：fixture(scoop="module")
    2. import pytest
    3. @pytest.fixture(scope="module")
    4. def getUsername():
    5.   print("获取username")
    6.   a = "admin"
    7.   return a
    8. @pytest.fixture(scope="module")
    9. def getPassword():
    10.   print("获取password")
    11.   b = "123456"
    12.   return b
    13. class Test01():# 每1个测试文件（test_xx.py），只会对每个fixture函数执行一次【setup...teardown过程】
    14.   def test_username1(self,getUsername):
    15.       print("当前的username:{username}".format(username=getUsername))
    16.       assert getUsername == "admin"
    17.   # def test_username2(self,getUsername):
    18.   #     print("当前的username:{username}".format(username=getUsername))
    19.   #     assert getUsername == "admin"
    20.   def test_password(self,getUsername, getPassword):
    21.       print("当前的password:{password}".format(password=getPassword))
    22.       assert getPassword == "123456"
    23. class Test02(): # 每1个测试文件（test_xx.py），只会对每个fixture函数执行一次【setup...teardown过程】
    24.   def test_username1(self,getUsername):
    25.       print("当前的username:{username}".format(username=getUsername))
    26.       assert getUsername == "admin"
    27.   # def test_username2(self,getUsername):
    28.   #     print("当前的username:{username}".format(username=getUsername))
    29.   #     assert getUsername == "admin"
    30.   def test_password(self,getUsername, getPassword):
    31.       print("当前的password:{password}".format(password=getPassword))
    32.       assert getPassword == "123456"
    mod1.png

    4.session级别

    session是运行多个测试文件（test_xx.py），其中的fixture函数只会执行一次“setup…teardwon过程”
    1. # conftest.py
    2. @pytest.fixture(scope="session")
    3. def getUsername():
    4.   print("获取username")
    5.   a = "admin"
    6.   return a
    7. #----------------
    8. # test_session1.py
    9. def test_s1(getUsername):
    10.   assert getUsername=="admin"
    11. # test_session2.py
    12. def test_s1(getUsername):
    13.   assert getUsername=="admin"   
    14. # 执行命令：pytest -sv --setup-show test_session1.py test_session2.py
    sessi.png