def METHOD_NAME(self, mock_method):
    mock_method.return_value = ['/path/one', '/path/two', '/path/three']
    pl = PluginLoader('foo', 'foo', '', 'test_plugins')
    paths = pl.print_paths()
    expected_paths = os.pathsep.join(['/path/one', '/path/two', '/path/three'])
    self.assertEqual(paths, expected_paths)