前言pytest在执行用例的时候,当用例报错的时候,如何获取到报错的完整内容呢? 当用例有print()打印的时候,如何获取到打印的内容? 钩子函数pytest_runtest_makereport测试用例如下,参数化第一个用例成功,第二个失败 import pytest import time
@pytest.fixture() def login(): print("login first----------")
@pytest.mark.parametrize( "user, password", [ ["test1", "123456"], ["test2", "123456"], ] ) def test_a(login, user, password): """用例描述:aaaaaa""" time.sleep(2) print("---------打印的内容-------") print('传入参数 user->{}, password->{}'.format(user, password)) assert user == "test1" 使用钩子函数pytest_runtest_makereport 可以获取用例执行过程中生成的报告 import pytest
@pytest.hookimpl(hookwrapper=True, tryfirst=True) def pytest_runtest_makereport(item, call):
out = yield # 钩子函数的调用结果 res = out.get_result() # 获取用例执行结果 if res.when == "call": # 只获取call用例失败时的信息 print("item(我们说的用例case):{}".format(item)) print("description 用例描述:{}".format(item.function.__doc__)) print("exception异常:{}".format(call.excinfo)) print("exception详细日志:{}".format(res.longrepr)) print("outcome测试结果:{}".format(res.outcome)) print("duration用例耗时:{}".format(res.duration)) print(res.__dict__) 用例运行成功的日志 test_b.py item(我们说的用例case):<Function test_a[test1-123456]> description 用例描述:用例描述:aaaaaa exception异常:None exception详细日志:None outcome测试结果:passed duration用例耗时:2.0006444454193115 {'nodeid': 'test_b.py::test_a[test1-123456]', 'location': ('test_b.py', 8, 'test_a[test1-123456]'), 'keywords': {'test1-123456': 1, 'parametrize': 1, 'test_b.py': 1, 'test_a[test1-123456]': 1, 'myweb': 1, 'pytestmark': 1}, 'outcome': 'passed', 'longrepr': None, 'when': 'call', 'user_properties': [], 'sections': [('Captured stdout setup', 'login first----------\n'), ('Captured stdout call', '---------打印的内容-------\n传入参数 user->test1, password->123456\n')], 'duration': 2.0006444454193115, 'extra': []} 用例运行失败的日志 item(我们说的用例case):<Function test_a[test2-123456]> description 用例描述:用例描述:aaaaaa exception异常:<ExceptionInfo AssertionError("assert 'test2' == 'test1'\n - test1\n ? ^\n + test2\n ? ^",) tblen=1> exception详细日志:login = None, user = 'test2', password = '123456'
@pytest.mark.parametrize( "user, password", [ ["test1", "123456"], ["test2", "123456"], ] ) def test_a(login, user, password): """用例描述:aaaaaa""" time.sleep(2) print("---------打印的内容-------") print('传入参数 user->{}, password->{}'.format(user, password)) > assert user == "test1" E AssertionError: assert 'test2' == 'test1' E - test1 E ? ^ E + test2 E ? ^
test_b.py:21: AssertionError outcome测试结果:failed duration用例耗时:2.003612995147705 {'nodeid': 'test_b.py::test_a[test2-123456]', 'location': ('test_b.py', 8, 'test_a[test2-123456]'), 'keywords': {'parametrize': 1, 'test2-123456': 1, 'test_a[test2-123456]': 1, 'test_b.py': 1, 'myweb': 1, 'pytestmark': 1}, 'outcome': 'failed', 'longrepr': ExceptionChainRepr(chain=[(ReprTraceback(reprentries=[ReprEntry(lines=[' @pytest.mark.parametrize(', ' "user, password",', ' [', ' ["test1", "123456"],', ' ["test2", "123456"],', ' ]', ' )', ' def test_a(login, user, password):', ' """用例描述:aaaaaa"""', ' time.sleep(2)', ' print("---------打印的内容-------")', " print('传入参数 user->{}, password->{}'.format(user, password))", '> assert user == "test1"', "E AssertionError: assert 'test2' == 'test1'", 'E - test1', 'E ? ^', 'E + test2', 'E ? ^'], reprfuncargs=ReprFuncArgs(args=[('login', 'None'), ('user', "'test2'"), ('password', "'123456'")]), reprlocals=None, reprfileloc=ReprFileLocation(path='test_b.py', lineno=21, message='AssertionError'), style='long')], extraline=None, style='long'), ReprFileLocation(path='D:\\demo\\myweb\\test_b.py', lineno=21, message="AssertionError: assert 'test2' == 'test1'\n - test1\n ? ^\n + test2\n ? ^"), None)]), 'when': 'call', 'user_properties': [], 'sections': [('Captured stdout setup', 'login first----------\n'), ('Captured stdout call', '---------打印的内容-------\n传入参数 user->test2, password->123456\n')], 'duration': 2.003612995147705, 'extra': []} out.get_result() 用例执行结果out.get_result() 返回用例执行的结果,主要有以下属性 'nodeid’: 'test_b.py::test_a[test1-123456]’, 'location’: ('test_b.py’, 8, 'test_a[test1-123456]’), 'keywords’: {'test1-123456’: 1, 'parametrize’: 1, 'test_b.py’: 1, 'test_a[test1-123456]’: 1, 'myweb’: 1, 'pytestmark’: 1}, 'outcome’: 'passed’, 'longrepr’: None, 'when’: 'call’, 'user_properties’: [], 'sections’: [('Captured stdout setup’, 'login first—————\n’), ('Captured stdout call’, '————-打印的内容———-\n传入参数 user->test1, password->123456\n’)], 'duration’: 2.0006444454193115, 'extra’: []
其中sections 就是用例里面print打印的内容了 import pytest
@pytest.hookimpl(hookwrapper=True, tryfirst=True) def pytest_runtest_makereport(item, call):
out = yield # 钩子函数的调用结果 res = out.get_result() # 获取用例执行结果 if res.when == "call": # 只获取call用例失败时的信息 print("获取用例里面打印的内容:{}".format(res.sections)) 执行结果: test_b.py 获取用例里面打印的内容:[('Captured stdout setup', 'login first----------\n'), ('Captured stdout call', '---------打印的内容-------\n传入参数 user->test1, password->123456\n')] .获取用例里面打印的内容:[('Captured stdout setup', 'login first----------\n'), ('Captured stdout call', '---------打印 的内容-------\n传入参数 user->test2, password->123456\n')] 可以优化下输出 import pytest
@pytest.hookimpl(hookwrapper=True, tryfirst=True) def pytest_runtest_makereport(item, call): out = yield # 钩子函数的调用结果 res = out.get_result() # 获取用例执行结果 if res.when == "call": # 只获取call用例失败时的信息 for i in res.sections: print("{}: {}".format(*i)) 运行结果 collected 2 items
test_b.py Captured stdout setup: login first----------
Captured stdout call: ---------打印的内容------- 传入参数 user->test1, password->123456
.Captured stdout setup: login first----------
Captured stdout call: ---------打印的内容------- 传入参数 user->test2, password->123456
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