如何使用python列出可用的测试? [英] How to list available tests with python?

问题描述

如何仅列出所有发现的测试? 我找到了以下命令:

How to just list all discovered tests? I found this command:

python3.4 -m unittest discover -s .

但这并不是我想要的，因为上面的命令执行测试.我的意思是让我们有一个包含大量测试的项目.执行时间为几分钟.这迫使我等到测试完成.

But it's not exactly what I want, because the above command executes tests. I mean let's have a project with a lot of tests. Execution time is a few minutes. This force me to wait until tests are finished.

我想要的是这样的东西(在命令的输出上方)

What I want is something like this (above command's output)

test_choice (test.TestSequenceFunctions) ... ok
test_sample (test.TestSequenceFunctions) ... ok
test_shuffle (test.TestSequenceFunctions) ... ok

或更妙的是，类似这样的东西(在上面编辑之后):

or even better, something more like this (after editing above):

test.TestSequenceFunctions.test_choice
test.TestSequenceFunctions.test_sample
test.TestSequenceFunctions.test_shuffle

但不执行，仅出于复制和粘贴目的而打印测试路径".

but without execution, only printing tests "paths" for copy&paste purpose.

推荐答案

命令行命令discover使用

Command line command discover is implemented using unittest.TestLoader. Here's the somewhat elegant solution

import unittest

def print_suite(suite):
    if hasattr(suite, '__iter__'):
        for x in suite:
            print_suite(x)
    else:
        print(suite)

print_suite(unittest.defaultTestLoader.discover('.'))

运行示例:

In [5]: print_suite(unittest.defaultTestLoader.discover('.'))
test_accounts (tests.TestAccounts)
test_counters (tests.TestAccounts)
# More of this ...
test_full (tests.TestImages)

之所以可行，是因为 TestLoader.discover 返回对象，它们实现了__iter__方法，因此是可迭代的.

This works because TestLoader.discover returns TestSuite objects, that implement __iter__ method and therefore are iterable.

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