test_main.py 文件源码

def test_semver_precision_requires_version_semver(self, capfd):
        """
        When the main function is given the `--semver-precision` option but no
        `--version-semver` option, it should exit with a return code of 2 and
        inform the user of the missing option.
        """
        with ExpectedException(SystemExit, MatchesStructure(code=Equals(2))):
            main(['--semver-precision', '2', 'test-image:abc'])

        out, err = capfd.readouterr()
        assert_that(out, Equals(''))
        assert_that(err, MatchesRegex(
            r'.*error: the --semver-precision option requires '
            r'--version-semver$',
            re.DOTALL
        ))