如何使用 unittest 从测试或设置中停止所有测试? [英] How to stop all tests from inside a test or setUp using unittest?

问题描述

我正在扩展 python 2.7 unittest 框架来做一些功能测试.我想做的一件事是停止所有测试在测试内部和 setUpClass() 方法内部运行.有时，如果测试失败，程序已损坏，无法再继续测试，因此我想停止运行测试.

I'm extending the python 2.7 unittest framework to do some function testing. One of the things I would like to do is to stop all the tests from running inside of a test, and inside of a setUpClass() method. Sometimes if a test fails, the program is so broken it is no longer of any use to keep testing, so I want to stop the tests from running.

我注意到 TestResult 有一个 shouldStop 属性和一个 stop() 方法，但我不确定如何在测试中访问它.

I noticed that a TestResult has a shouldStop attribute, and a stop() method, but I'm not sure how to get access to that inside of a test.

有人有什么想法吗?有没有更好的办法?

Does anyone have any ideas? Is there a better way?

推荐答案

这是我在一段时间后想出的另一个答案:

Here's another answer I came up with after a while:

首先，我添加了一个新的例外:

First, I added a new exception:

class StopTests(Exception):
"""
Raise this exception in a test to stop the test run.

"""
    pass

然后我在我的子测试类中添加了一个新的assert:

then I added a new assert to my child test class:

def assertStopTestsIfFalse(self, statement, reason=''):
    try:
        assert statement            
    except AssertionError:
        result.addFailure(self, sys.exc_info())

最后我覆盖了 run 函数以将其包含在 testMethod() 调用的正下方:

and last I overrode the run function to include this right below the testMethod() call:

except StopTests:
    result.addFailure(self, sys.exc_info())
    result.stop()

我更喜欢这个，因为现在任何测试都可以停止所有测试，并且没有特定于 cpython 的代码.

I like this better since any test now has the ability to stop all the tests, and there is no cpython-specific code.

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