'Test response if there are no changes'

def test_no_change(self):

    git_export_utils.export_to_git(self.course.id, 'file://{0}'.format(self.bare_repo_dir))
    with self.assertRaisesRegexp(GitExportError, unicode(GitExportError.CANNOT_COMMIT)):
        git_export_utils.export_to_git(self.course.id, 'file://{0}'.format(self.bare_repo_dir))
