'test tag patterns'

def test_tag_pattern(self):

    test_cases = {'0.3': '0.3', 'v0.3': '0.3', 'release0.3': '0.3', 'Release-0.3': '0.3', 'v0.3rc1': '0.3rc1', 'v0.3-rc1': '0.3-rc1', 'v0.3-rc.1': '0.3-rc.1', 'version    0.3': '0.3', 'version_0.3_rc_1': '0.3_rc_1', 'v1': '1', '0.3rc1': '0.3rc1'}
    for (testcase, version) in test_cases.items():
        matches = re.match(release_robot.PATTERN, testcase)
        self.assertEqual(matches.group(1), version)
