How to collect my tests with py.test?

Question

I try to collect my tests with py.test but it doesn't do so.

• Do I have to provide additional options at the command line?

• Py.test was executed in the directory of my .py-file. Are there any other requirements?

• Are my tests named correctly? In my code I used 'Test-' for classes and 'test_' for methods.

The results from the terminal:

> py.test

===============================  in 0.00 seconds ============================
user@host:~/workspace/my_project/src/html_extractor$ py.test

============================= test session starts ===========================
platform linux2 -- Python 2.7.3 -- pytest-2.3.4
plugins: xdist
collected 0 items 

My code under test:

class Factories(object):
    TEST_LINKS = ['http://www.burgtheater.at',
                  'http://www.musikverein.at/']

    def links(self):
        for link in self.TEST_LINKS:
            yield link


class TestHTMLExtractor(unittest.TestCase):

    def setUp(self):
        self.factory = Factories()
        self.extractor = HTMLExtractor()


    def test_extract_site_return(self):
        for link in self.factory.links():
             raw_html_page = self.extractor.run(link)

def test_whatever():
    pass

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

Answer 1

In the default configuration, the test file should be named test_<something>.py. See Changing standard (Python) test discovery.