在函数内部创建 Unittest class 不起作用

Question

在附加的脚本中，为什么 0 个测试用例是运行

import unittest


def smg():
    def add(x, y):
        return x + y

    class SimpleTest(unittest.TestCase):
        def testadd1(self):
            self.assertEquals(add(4, 5), 9)
        

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

smg()

给予

Ran 0 tests in 0.000s

有什么办法可以解决，请协助

Answer 1

取出 smg 函数中的代码，然后使用 python -m unittest <Your Filename>.py.

从命令行进行运行测试

您的代码将如下所示：


import unittest


def add(x, y):
    return x + y


class SimpleTest(unittest.TestCase):
    def testadd1(self):
        self.assertEquals(add(4, 5), 9)
    

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

此外，您可能会收到 assertEquals 的弃用警告。您可能想将其更改为 assertEqual。

Answer 2

您可能对 unittest.TextTestRunner 感兴趣：

A basic test runner implementation that outputs results to a stream.

样本usage：

However, should you want to customize the building of your test suite, you can do it yourself:

def suite():
    suite = unittest.TestSuite()
    suite.addTest(WidgetTestCase('test_default_widget_size'))
    suite.addTest(WidgetTestCase('test_widget_resize'))
    return suite

if __name__ == '__main__':
    runner = unittest.TextTestRunner()
    runner.run(suite())

针对您的情况的示例运行。

src.py

def add(x, y):
    print("Add", x, y)
    return x + y

test_src.py

import unittest

from src import add


class SimpleTest(unittest.TestCase):
    def testadd1(self):
        self.assertEqual(add(4, 5), 9)

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

运行测试正常

$ python test_src.py  # Using unittest
Add 4 5
.
----------------------------------------------------------------------
Ran 1 test in 0.000s

OK
$ pytest -q  # Using pytest
.                                                                                                                                                                                                   
1 passed in 0.06s

现在如果你想通过函数手动调用它。

run_tests.py

import unittest

import test_src


def suite():
    suite = unittest.TestSuite()
    suite.addTest(test_src.SimpleTest('testadd1'))
    return suite


def run():
    runner = unittest.TextTestRunner()
    runner.run(suite())

# run()  # Uncomment if you want to try to run it as a script e.g. <python run_tests.py>

您现在只需导入文件并在需要时调用 run()：

$ python3
>>> import run_tests
>>> run_tests.run()
Add 4 5
.
----------------------------------------------------------------------
Ran 1 test in 0.000s

OK
>>>

在函数内部创建 Unittest class 不起作用

Creating Unittest class inside function not working

python

python-3.x

python-unittest