| with self.assertRaises(SomeException) as cm: | do_something() | the_exception = cm.exception | self.assertEqual(the_exception.error_code, 3) | | assertRaisesRegexp(self, expected_exception, expected_regexp, callable_obj=None, *args, **kwargs) | Asserts that the message in a raised ...
| with self.assertRaises(SomeException) as cm: | do_something() | the_exception = cm.exception | self.assertEqual(the_exception.error_code, 3) | | assertRaisesRegexp(self, expected_exception, expected_regexp, callable_obj=None, *args, **kwargs) | Asserts that the message in a raised ...
| | If called with callableObj omitted or None, will return a | context object used like this:: | | with self.assertRaises(SomeException): | do_something() | | The context manager keeps a reference to the exception as | the 'exception' attribute. This allows you to inspect the | exc...
| assertRaises(self, excClass, callableObj=None, *args, **kwargs) | Fail unless an exception of class excClass is raised | by callableObj when invoked with arguments args and keyword | arguments kwargs. If a different type of exception is | raised, it will not be caught, and the test...
with self.assertRaises(ZeroDivisionError): my_function_that_may_throw_zero_division_error()5.3.2 使用pytest等框架管理异常测试 pytest框架提供了更灵活的异常处理方式,可通过pytest.raises()上下文管理器验证函数是否抛出了预期异常。 import pytest def test_division_by_zero(): ...
assertRaises(Exception, callable, *args, **kwargs):断言 callable调用时抛出指定的异常。 使用不同的断言方法classTestMathFunctions(unittest.TestCase): deftest_assert_methods(self): self.assertEqual(add(1,2),3) self.assertNotEqual(add(2,2),5) ...
例如:assertraises(ExceptionType, callable, *args, **kwargs)。 assert not raises:检查一个异常是否没有被抛出。例如:assertnotraises(ExceptionType, callable, *args, **kwargs)。这些断言方法可以帮助你编写准确可靠的测试代码,确保程序的正确性。四、测试组织方式在编写测试用例时,你可以使用多种方式来组织你...
importunittestclassTestExceptionHandling(unittest.TestCase):deftest_file_not_found_exception(self):withself.assertRaises(FileNotFoundError):process_file("nonexistent_file.txt")deftest_permission_error_exception(self):withself.assertRaises(PermissionError)...
assertRaises(ZeroDivisionError, divide, 6, 0) if __name__ == '__main__': unittest.main() 4.2.2 测试覆盖率分析与持续集成 确保代码充分测试的一个关键指标是测试覆盖率。使用coverage等工具可以帮助测量代码被执行测试的比例。而持续集成(CI)则是在每次提交后自动运行测试的过程,如使用GitHub Actions、...
每个测试的关键是:调用assertEqual()来检查预期的输出; 调用assertTrue()或assertFalse()来验证一个条件;调用assertRaises()来验证抛出了一个特定的异常。使用这些方法而不是assert语句是为了让测试运行者能聚合所有的测试结果并产生结果报告。注意这些方法是 unnitest 模块的方法,需要使用 self 调用。