Question

这是一个非常奇怪的问题，但是Python中的unittest实际上并没有在测试用例中进行测试。

这是我正在使用的代码，正在测试的功能以及我正在尝试在tests.py脚本中使用的单元测试代码：

import unittest
import bs4


# This is the function we're testing
def zerolength_link_test(post_contents: str) -> bool:
    # Returns 'True' if there is a zero length link in here.
    bs = bs4.BeautifulSoup(post_contents, 'html.parser')
    for link in bs.find_all('a'):
        if '<img ' in str(link):
            # Image embeds in links are not zero-length for this case.
            continue
        if len(link.text) == 0:
            return True
        if link.text.isspace() or not link.text.isprintable():
            return True

    return False


class ZeroLengthLinkTests(unittest.TestCase):

    def whitespace_only_link(self):
        test = 'This is a test at <a href="https://google.com"> </a> whitespace-only ' \
               'links which are effectively zero-length.'
        self.assertTrue(zerolength_link_test(test))

    def zero_length_link_nonobfuscated(self):
        test = "This is a test of <a href='google.com'></a> actual zero-length link text."
        self.assertTrue(zerolength_link_test(test))

    def zero_length_link_tag_obfuscation(self):
        test = "This is a test of <a href='google.com'><em></em></a> z" \
               "ero length links obfuscated by tags."
        self.assertTrue(zerolength_link_test(test))

    def unprintable_only_link(self):
        test = "This one has unprintable characters <a href='google.com'>\t\f\r\n</a> in the link."
        self.assertTrue(zerolength_link_test(test))

    def not_zero_length_link(self):
        test = "This is a test of <a href='https://google.com'>an actual link to " \
               "Google</a> that is not Zero Length."
        self.assertFalse(zerolength_link_test(test))

    def whitespace_only_link_tag_obfuscation(self):
        test = "This is a test of a whitespace only link <a href='google.com'><span> </span></a>" \
               " obfuscated with span tags."
        self.assertTrue(zerolength_link_test(test))


if __name__ == "__main__":
    unittest.main()

不幸的是，当我运行此程序时，系统显示“ 0个测试正在运行”，这表明它无法找到测试用例，从而造成了麻烦。

这是Ubuntu 20.04（3.8.2）上的系统Python 3，但还通过3.8.5本地安装（通过pyenv在用户空间中安装）进行了测试。

我过去编写的其他测试套件可以很好地运行，并且以类似的方式设置。

在编写unittest驱动测试时我做错什么了吗，还是只在您说这个系统上有些古怪？

Answer 1

Tests should start with test prefix：

三个单独的测试是用名称以字母test开头的方法定义的。此命名约定将告知测试运行者哪些方法代表测试。

import unittest
import bs4


# This is the function we're testing
def zerolength_link_test(post_contents: str) -> bool:
    # Returns 'True' if there is a zero length link in here.
    bs = bs4.BeautifulSoup(post_contents, 'html.parser')
    for link in bs.find_all('a'):
        if '<img ' in str(link):
            # Image embeds in links are not zero-length for this case.
            continue
        if len(link.text) == 0:
            return True
        if link.text.isspace() or not link.text.isprintable():
            return True

    return False


class ZeroLengthLinkTests(unittest.TestCase):

    def test_whitespace_only_link(self):
        test = 'This is a test at <a href="https://google.com"> </a> whitespace-only ' \
               'links which are effectively zero-length.'
        self.assertTrue(zerolength_link_test(test))

    def test_zero_length_link_nonobfuscated(self):
        test = "This is a test of <a href='google.com'></a> actual zero-length link text."
        self.assertTrue(zerolength_link_test(test))

    def test_zero_length_link_tag_obfuscation(self):
        test = "This is a test of <a href='google.com'><em></em></a> z" \
               "ero length links obfuscated by tags."
        self.assertTrue(zerolength_link_test(test))

    def test_unprintable_only_link(self):
        test = "This one has unprintable characters <a href='google.com'>\t\f\r\n</a> in the link."
        self.assertTrue(zerolength_link_test(test))

    def test_not_zero_length_link(self):
        test = "This is a test of <a href='https://google.com'>an actual link to " \
               "Google</a> that is not Zero Length."
        self.assertFalse(zerolength_link_test(test))

    def test_whitespace_only_link_tag_obfuscation(self):
        test = "This is a test of a whitespace only link <a href='google.com'><span> </span></a>" \
               " obfuscated with span tags."
        self.assertTrue(zerolength_link_test(test))


if __name__ == "__main__":
    unittest.main()

Python 3.8中unittest的奇怪之处-未检测到测试

1 个答案: