You set maxDiff to None. But you will have to actually use a unittest.TestCase for your tests for that to work. This should work. class MyTest(unittest.TestCase): maxDiff = None def test_diff(self): <your test here>
You can simplify your test by using the patch decorator and nesting them like so (they are MagicMock objects by default): from unittest.mock import patch @patch(‘cPickle.dump’) @patch(‘__builtin__.open’) def test_write_out(mock_open, mock_pickle): path=”~/collection” f = mock_open.return_value f.method.return_value = path write_out(path, ‘data’) mock_open.assert_called_once_with(‘~/collection’, ‘wb’) mock_pickle.assert_called_once_with(‘data’, f) f.close.assert_any_call() Calls to a MagicMock instance return a new MagicMock instance, so … Read more
From python 3.4 on, the standard unittest library offers a new test assertion context manager, assertLogs. From the docs: with self.assertLogs(‘foo’, level=”INFO”) as cm: logging.getLogger(‘foo’).info(‘first message’) logging.getLogger(‘foo.bar’).error(‘second message’) self.assertEqual(cm.output, [‘INFO:foo:first message’, ‘ERROR:foo.bar:second message’])
You’ve got an __init__.py in your top level directory. That makes it a package. If you remove it, your nosetests should work. If you don’t remove it, you’ll have to change your import to import dir.foo, where dir is the name of your directory.
I use this context manager to capture output. It ultimately uses the same technique as some of the other answers by temporarily replacing sys.stdout. I prefer the context manager because it wraps all the bookkeeping into a single function, so I don’t have to re-write any try-finally code, and I don’t have to write setup … Read more
nosetests appname.tests.functional.test_controller should work, where the file is named test_controller.py. To run a specific test class and method use a path of the form module.path:ClassNameInFile.method_name, that is, with a colon separating the module/file path and the objects within the file. module.path is the relative path to the file (e.g. tests/my_tests.py:ClassNameInFile.method_name).