ValueError: no such test method in : runTest

Question

I have a test case:

class LoginTestCase(unittest.TestCase):
    ...

I\'d like to use it in a different test case:

class Edi         


        

Answer 1

@dmvianna's answer got me very close to being able to run unittest in a jupyter (ipython) notebook, but I had to do a bit more. If I wrote just the following:

class TestStringMethods(unittest.TestCase):

    def test_upper(self):
        self.assertEqual('foo'.upper(), 'FOO')

    def test_isupper(self):
        self.assertTrue('FOO'.isupper())
        self.assertFalse('Foo'.isupper())

    def test_split(self):
        s = 'hello world'
        self.assertEqual(s.split(), ['hello', 'world'])
        # check that s.split fails when the separator is not a string
        with self.assertRaises(TypeError):
            s.split(2)

suite = unittest.TestLoader().loadTestsFromModule (TestStringMethods)
unittest.TextTestRunner().run(suite)

I got

---

Ran 0 tests in 0.000s

OK

It's not broken, but it doesn't run any tests! If I instantiated the test class

suite = unittest.TestLoader().loadTestsFromModule (TestStringMethods())

(note the parens at the end of the line; that's the only change) I got

---

ValueError Traceback (most recent call last) in () ----> 1 suite = unittest.TestLoader().loadTestsFromModule (TestStringMethods())

/usr/lib/python2.7/unittest/case.pyc in init(self, methodName) 189 except AttributeError: 190 raise ValueError("no such test method in %s: %s" % --> 191 (self.class, methodName)) 192 self._testMethodDoc = testMethod.doc 193 self._cleanups = []

ValueError: no such test method in : runTest

The fix is now reasonably clear: add runTest to the test class:

class TestStringMethods(unittest.TestCase):

    def runTest(self):
        test_upper (self)
        test_isupper (self)
        test_split (self)

    def test_upper(self):
        self.assertEqual('foo'.upper(), 'FOO')

    def test_isupper(self):
        self.assertTrue('FOO'.isupper())
        self.assertFalse('Foo'.isupper())

    def test_split(self):
        s = 'hello world'
        self.assertEqual(s.split(), ['hello', 'world'])
        # check that s.split fails when the separator is not a string
        with self.assertRaises(TypeError):
            s.split(2)

suite = unittest.TestLoader().loadTestsFromModule (TestStringMethods())
unittest.TextTestRunner().run(suite)

---

Ran 3 tests in 0.002s

OK

It also works correctly (and runs 3 tests) if my runTest just passes, as suggested by @Darren.

This is a little yucchy, requiring some manual labor on my part, but it's also more explicit, and that's a Python virtue, isn't it?

I could not get any of the techniques via calling unittest.main with explicit arguments from here or from this related question Unable to run unittest's main function in ipython/jupyter notebook to work inside a jupyter notebook, but I am back on the road with a full tank of gas.