Python单元测试：TestSuite仅运行第一个TestCase

Question

Running first_TestCase and second_TestCase separately all works fine. But when i created TestSuite, it runs only first_TestCase . Why is this happening?

import unittest
from first_TestCase import first_TestCase
from second_TestCase import second_TestCase


     def suite():
         suite = unittest.TestSuite()
         suite.addTest(first_TestCase())
         suite.addTest(second_TestCase())
         return suite

if __name__ == "__main__":
     suite = unittest.defaultTestLoader.loadTestsFromTestCase(first_TestCase)
     unittest.TextTestRunner().run(suite)

Answer 1

You're saying:

if __name__ == "__main__":
    suite = unittest.defaultTestLoader.loadTestsFromTestCase(first_TestCase)
    unittest.TextTestRunner().run(suite)

You're loading tests from only first_TestCase right before you run via the TextTestRunner . You're never hitting that suite() function.

You should do:

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

Because you're not calling the suite() function in your current implementation.

Answer 2

Instead of:

 if __name__ == "__main__":
     suite = unittest.defaultTestLoader.loadTestsFromTestCase(first_TestCase)
     unittest.TextTestRunner().run(suite)

I should use:

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