deb-python-semver/tests/semver_test.py

# -*- coding: utf-8 -*-

import unittest
from unittest import TestCase
from semver import compare
from semver import match
from semver import parse


class TestSemver(TestCase):
    def test_should_parse_version(self):
        self.assertEqual(
            parse("1.2.3-alpha.1.2+build.11.e0f985a"),
            {'major': 1,
             'minor': 2,
             'patch': 3,
             'prerelease': 'alpha.1.2',
             'build': 'build.11.e0f985a'})

        self.assertEqual(
            parse("1.2.3-alpha-1+build.11.e0f985a"),
            {'major': 1,
             'minor': 2,
             'patch': 3,
             'prerelease': 'alpha-1',
             'build': 'build.11.e0f985a'})

    def test_should_get_less(self):
        self.assertEqual(
            compare("1.0.0", "2.0.0"),
            -1)

    def test_should_get_greater(self):
        self.assertEqual(
            compare("2.0.0", "1.0.0"),
            1)

    def test_should_match_simple(self):
        self.assertEqual(
            match("2.3.7", ">=2.3.6"),
            True)

    def test_should_no_match_simple(self):
        self.assertEqual(
            match("2.3.7", ">=2.3.8"),
            False)

    def test_should_raise_value_error_for_zero_prefixed_versions(self):
        self.assertRaises(ValueError, parse, "01.2.3")
        self.assertRaises(ValueError, parse, "1.02.3")
        self.assertRaises(ValueError, parse, "1.2.03")

    def test_should_raise_value_error_for_invalid_value(self):
        self.assertRaises(ValueError, compare, 'foo', 'bar')
        self.assertRaises(ValueError, compare, '1.0', '1.0.0')
        self.assertRaises(ValueError, compare, '1.x', '1.0.0')

    def test_should_raise_value_error_for_invalid_match_expression(self):
        self.assertRaises(ValueError, match, '1.0.0', '')
        self.assertRaises(ValueError, match, '1.0.0', '!')
        self.assertRaises(ValueError, match, '1.0.0', '1.0.0')

    def test_should_follow_specification_comparison(self):
        # produce comparsion chain:
        # 1.0.0-alpha < 1.0.0-alpha.1 < 1.0.0-beta.2 < 1.0.0-beta.11
        # < 1.0.0-rc.1 < 1.0.0-rc.1+build.1 < 1.0.0 < 1.0.0+0.3.7 < 1.3.7+build
        # < 1.3.7+build.2.b8f12d7 < 1.3.7+build.11.e0f985a
        # and in backward too.
        chain = ['1.0.0-alpha', '1.0.0-alpha.1', '1.0.0-beta.2',
                 '1.0.0-beta.11', '1.0.0-rc.1',
                 '1.0.0', '1.3.7+build']
        versions = zip(chain[:-1], chain[1:])
        for low_version, high_version in versions:
            self.assertEqual(
                compare(low_version, high_version), -1,
                '%s should be lesser than %s' % (low_version, high_version))
            self.assertEqual(
                compare(high_version, low_version), 1,
                '%s should be higher than %s' % (high_version, low_version))

    def test_should_compare_rc_builds(self):
        self.assertEqual(compare('1.0.0-beta.2', '1.0.0-beta.11'), -1)

    def test_should_compare_release_candidate_with_release(self):
        self.assertEqual(compare('1.0.0-rc.1+build.1', '1.0.0'), -1)

    def test_should_say_equal_versions_are_equal(self):
        self.assertEqual(compare("2.0.0", "2.0.0"), 0)


if __name__ == '__main__':
    unittest.main()