在python中对序列执行单个单元测试 [英] Executing single unittest over a sequence in python

问题描述

我有一个单元测试，它可能会在某个序列上运行，我会在其中检查序列上某些处理的结果.我不在乎是否有个别的失败——只要我能确定处理没有产生好的结果的序列元素.所以，而不是写

I have the unittest that may run over some sequence, where I check results of some processing over the sequence. I don't care if there are individual failures - as long as I can pinpoint on which element of sequence the processing did not yield good result. So, instead of writing

class MyTectClass(unittest.TestCase):
    .....
    def TestOverSequence(self):
        for elem in sequence:
             <run a bunch of asserts>

我想要类似的东西

class MyTectClass(unittest.TestCase):
    def __init__(self):
        super().__init__()
        self.sequence_iter = iter(sequence)

    def TestOverElem(self):
        elem = next(self.sequence_iter)
        <run a bunch of asserts>

是否可行，如果可行 - 怎么做?

Is it doable, and if it is - how?

提前致谢

PS 我可能会发出警告 - 但我宁愿测试用例失败.

PS I may issue warnings - but I would rather have failed test cases.

推荐答案

感谢所有试图提供帮助的人，但再次查看文档后，我找到了我需要的东西 - unittest.subTest() 上下文管理器.

Thanks to all who've tried to help, but after looking at the documentation again, I've found exactly what I need - unittest.subTest() context manager.

我应该首先看到它

class MyTectClass(unittest.TestCase):
    def _some_test(**kwargs):
       .......

    def TestOverSequence(self):
        for elem in sequence:
            with self.subTest(elem=elem)
                self._some_test(elem=elem)

谢谢你看我的肩膀 LOL(你知道，有时你需要有人看你的肩膀才能找到答案)

Thanks for looking over my shoulder LOL (you know, sometimes to find the answer you need someone to look over your shoulder)

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