I can't find a way to do_something() when the assertion in a test passes. For example:
def test_one(self):
self.assertEqual(1,1, "Did not match")
That test will print "Did not match" if the assertion would fail, but in this case it will not, so I'm trying to call a function or print something when the self.assertEqual() is successful, please any ideas ?
Thanks
If you want to print when something passes, there are a couple of options. However, please don't use Noeld's answer. Not that it is wrong, it's just that you don't want to clutter your test with a bunch of print messages when unittest provides better ways for doing this.
If you want to print the result of every single test_ function, set the verbosity of the test runner. You can do this in a couple of ways:
From the command line, use the verbose option:
python -m unittest discover -v
Programmatically calling the unittest.main and passing it the
verbosity
argument
if __name__ == "__main__":
unittest.main(verbosity=2)
Programmatically building up your TestSuite and calling the TestRunner with the verbosity argument.
suite = unittest.TestLoader().loadTestsFromModule(TestModuleName)
results = unittest.TextTestRunner(verbosity=2).run(suite)
Creating a subclass of the TestResult object, which contains an addSuccess method which will be called whenever a test passes.
You can then pass this TestResult object to the Test Suite's run method.
suite = unittest.TestLoader().loadTestsFromModule(TestModuleName)
suite.run(myTestResult)
Take a look at Twisted's Trial.
It contains many different Test Runners which might be useful. By default, it runs the TreeReporter which looks like:
This works:
import unittest
class TestupSomeStuff(unittest.TestCase):
def setUp(self):
pass
def test_fail(self):
x = 2 * 4
self.assertEqual(x,9,"DID NOT MATCH")
print "Passed"
def test_pass(self):
x = 2 * 4
self.assertEqual(x,8,"DID NOT MATCH")
print "Passed"
if __name__ == "__main__":
unittest.main()
This is because if your assert fails then the test is a fail and you go to the next test, however when the test is a success it carries on and returns None!
For example:
import unittest
class TestupSomeStuff(unittest.TestCase):
def setUp(self):
pass
def test_fail(self):
return None
# This is skipped, so test is win
x = 2 * 4
self.assertEqual(x,9,"DID NOT MATCH")
print "FAIL"
def test_pass(self):
x = 2 * 4
self.assertEqual(x,8,"DID NOT MATCH")
# Passed gets printed after the dot for passing the previous test.
print "Passed"
Prints:
.Passed
.
----------------------------------------------------------------------
Ran 2 tests in 0.000s
Hope this helps.
