Unit Test not running

Question

I'm getting stuck with some unittests.

Here's the simplest example I could come up with:

#testito.py
import unittest
class Prueba(unittest.TestCase):
 def setUp(self):
 pass
 def printsTrue(self):
 self.assertTrue(True)
if __name__=="__main__":
 unittest.main()

Problem is, running this has no effect:

$ python testito.py 
----------------------------------------------------------------------
Ran 0 tests in 0.000s
OK

I'm scratching my head as I don't see any problem with the code above. It happened with a couple of tests now and I don't really know what to do next. Any idea?

Answer 1

By default, only functions whose name that start with test are run:

class Prueba(unittest.TestCase):
 def setUp(self):
 pass
 def testPrintsTrue(self):
 self.assertTrue(True)

From the unittest basic example:

A testcase is created by subclassing unittest.TestCase. The three individual tests are defined with methods whose names start with the letters test. This naming convention informs the test runner about which methods represent tests.

• Foo Bar User: just wandering why testPrints instead of test_prints
• Martijn Pieters: @FooBarUser: I was sticking to the existing naming convention of the original question.
• Darkgaze: Doesn't work for me even adding test at the beginning of the function. It's just the same as this, but 0 tests are run...
• Martijn Pieters: @ScottSkiles: you'd have to define your own TestLoader subclass, overriding the getTestCaseNames() method. The current implementation makes this a little simpler; you can also set the testMethodPrefix attribute on an existing loader.
• Martijn Pieters: @ScottSkiles: Some helper functions in unittest.loader do just that.