pytest-25-conftest.py作用范围

前言

一个测试工程下是可以有多个conftest.py的文件,一般在工程根目录放一个conftest.py起到全局作用。
在不同的测试子目录也可以放conftest.py,作用范围只在该层级以及以下目录生效。

conftest层级关系

在web_conf_py项目工程下建两个子项目baidu、blog,并且每个目录下都放一个conftest.py和__init__.py(python的每个package必须要有__init__.py)

web_conf_py是工程名称

├─baidu
│  │  conftest.py
│  │  test_1_baidu.py │ │ __init__.py │ │ ├─blog │ │ conftest.py │ │ test_2_blog.py │ │ __init__.py │ │ conftest.py │ __init__.py 

案例分析

web_conf_py工程下conftest.py文件代码案例

# web_conf_py/conftest.py
import pytest

@pytest.fixture(scope="session")
def start(): print("\n打开首页")

baidu目录下conftest.py和test_1_baidu.py

# web_conf_py/baidu/conftest.py
import pytest

@pytest.fixture(scope="session")
def open_baidu(): print("打开百度页面_session") # web_conf_py/baidu/test_1_baidu.py import pytest def test_01(start, open_baidu): print("测试用例test_01") assert 1 def test_02(start, open_baidu): print("测试用例test_02") assert 1 if __name__ == "__main__": pytest.main(["-s", "test_1_baidu.py"])

运行test_1_baidu.py结果可以看出,start和open_baidu是session级别的,只运行一次

============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0 rootdir: E:\YOYO\web_conf_py\baidu, inifile: plugins: metadata-1.7.0, html-1.19.0 collected 2 items test_1_baidu.py 打开首页 打开百度页面_session 测试用例test_01 .测试用例test_02 . ========================== 2 passed in 0.01 seconds ===========================

blog目录下conftest.py和test_2_blog.py代码

# web_conf_py/blog/conftest.py
import pytest

@pytest.fixture(scope="function")
def open_blog(): print("打开blog页面_function") # web_conf_py/blog/test_2_blog.py import pytest def test_03(start, open_blog): print("测试用例test_03") assert 1 def test_04(start, open_blog): print("测试用例test_04") assert 1 def test_05(start, open_baidu): '''跨模块调用baidu模块下的conftest''' print("测试用例test_05,跨模块调用baidu") assert 1 if __name__ == "__main__": pytest.main(["-s", "test_2_blog.py"]) 

运行结果可以看出,start起到全局作用,blog目录下的open_blog是function级别,每个用例调用一次。
test_05(start, open_baidu)用例不能跨模块调用baidu模块下的open_baidu,所以test_05用例会运行失败

============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0
rootdir: E:\YOYO\web_conf_py\blog, inifile:
plugins: metadata-1.7.0, html-1.19.0
collected 3 items

test_2_blog.py 
打开首页
打开blog页面_function
测试用例test_03
.打开blog页面_function
测试用例test_04
.E

=================================== ERRORS ====================================
__________________________ ERROR at setup of test_05 __________________________
file E:\YOYO\web_conf_py\blog\test_2_blog.py, line 11
  def test_05(start, open_baidu):
E       fixture 'open_baidu' not found > available fixtures: cache, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, metadata, monkeypatch, open_blog, pytestconfig, record_property, record_xml_attribute, record_xml_property, recwarn, start, tmpdir, tmpdir_factory > use 'pytest --fixtures [testpath]' for help on them. E:\YOYO\web_conf_py\blog\test_2_blog.py:11 ====================== 2 passed, 1 error in 0.02 seconds ======================

一个测试工程下是可以有多个conftest.py的文件,一般在工程根目录放一个conftest.py起到全局作用。
在不同的测试子目录也可以放conftest.py,作用范围只在该层级以及以下目录生效。

conftest层级关系

在web_conf_py项目工程下建两个子项目baidu、blog,并且每个目录下都放一个conftest.py和__init__.py(python的每个package必须要有__init__.py)

web_conf_py是工程名称

├─baidu
│  │  conftest.py
│  │  test_1_baidu.py │ │ __init__.py │ │ ├─blog │ │ conftest.py │ │ test_2_blog.py │ │ __init__.py │ │ conftest.py │ __init__.py 

案例分析

web_conf_py工程下conftest.py文件代码案例

# web_conf_py/conftest.py
import pytest

@pytest.fixture(scope="session")
def start(): print("\n打开首页")

baidu目录下conftest.py和test_1_baidu.py

# web_conf_py/baidu/conftest.py
import pytest

@pytest.fixture(scope="session")
def open_baidu(): print("打开百度页面_session") # web_conf_py/baidu/test_1_baidu.py import pytest def test_01(start, open_baidu): print("测试用例test_01") assert 1 def test_02(start, open_baidu): print("测试用例test_02") assert 1 if __name__ == "__main__": pytest.main(["-s", "test_1_baidu.py"])

运行test_1_baidu.py结果可以看出,start和open_baidu是session级别的,只运行一次

============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0 rootdir: E:\YOYO\web_conf_py\baidu, inifile: plugins: metadata-1.7.0, html-1.19.0 collected 2 items test_1_baidu.py 打开首页 打开百度页面_session 测试用例test_01 .测试用例test_02 . ========================== 2 passed in 0.01 seconds ===========================

blog目录下conftest.py和test_2_blog.py代码

# web_conf_py/blog/conftest.py
import pytest

@pytest.fixture(scope="function")
def open_blog(): print("打开blog页面_function") # web_conf_py/blog/test_2_blog.py import pytest def test_03(start, open_blog): print("测试用例test_03") assert 1 def test_04(start, open_blog): print("测试用例test_04") assert 1 def test_05(start, open_baidu): '''跨模块调用baidu模块下的conftest''' print("测试用例test_05,跨模块调用baidu") assert 1 if __name__ == "__main__": pytest.main(["-s", "test_2_blog.py"]) 

运行结果可以看出,start起到全局作用,blog目录下的open_blog是function级别,每个用例调用一次。
test_05(start, open_baidu)用例不能跨模块调用baidu模块下的open_baidu,所以test_05用例会运行失败

============================= test session starts =============================
platform win32 -- Python 3.6.0, pytest-3.6.3, py-1.5.4, pluggy-0.6.0
rootdir: E:\YOYO\web_conf_py\blog, inifile:
plugins: metadata-1.7.0, html-1.19.0
collected 3 items

test_2_blog.py 
打开首页
打开blog页面_function
测试用例test_03
.打开blog页面_function
测试用例test_04
.E

=================================== ERRORS ====================================
__________________________ ERROR at setup of test_05 __________________________
file E:\YOYO\web_conf_py\blog\test_2_blog.py, line 11
  def test_05(start, open_baidu):
E       fixture 'open_baidu' not found > available fixtures: cache, capfd, capfdbinary, caplog, capsys, capsysbinary, doctest_namespace, metadata, monkeypatch, open_blog, pytestconfig, record_property, record_xml_attribute, record_xml_property, recwarn, start, tmpdir, tmpdir_factory > use 'pytest --fixtures [testpath]' for help on them. E:\YOYO\web_conf_py\blog\test_2_blog.py:11 ====================== 2 passed, 1 error in 0.02 seconds ======================

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转载自www.cnblogs.com/jason89/p/10323767.html