#!/usr/bin/env python3

import unittest
from commit_msg import GitCommitMessage


class TestCommitMsg(unittest.TestCase):
    def testNoInput(self):
        m = GitCommitMessage().parse_lines([])
        self.assertEqual(len(m.body_lines), 0)
        m = GitCommitMessage().parse_lines(None)
        self.assertEqual(len(m.body_lines), 0)

    def testParsing(self):
        m = GitCommitMessage().parse_lines(
            ["This is a subject line", "   ", "body line 1", "body line 2"]
        )
        self.assertEqual(m.subject, "This is a subject line")
        self.assertTrue(m.has_subject_body_separator)
        self.assertEqual(m.body_lines[0], "body line 1")
        self.assertEqual(m.body_lines[1], "body line 2")

    def testNonImperative(self):
        m = GitCommitMessage().parse_lines(["Adds new file"])
        self.assertFalse(m.check_subject_imperative())

        m.parse_lines(["Adding new file"])
        self.assertFalse(m.check_subject_imperative())

        # Default to accept
        m.parse_lines(["Foo bar"])
        self.assertTrue(m.check_subject_imperative())

    def testSubjectBodySeparator(self):
        m = GitCommitMessage().parse_lines(["This is a subject line"])
        self.assertTrue(m.check_subject_body_separtor())
        m = GitCommitMessage().parse_lines(["This is a subject line", "body"])
        self.assertFalse(m.check_subject_body_separtor())
        m = GitCommitMessage().parse_lines(["This is a subject line", "", "body"])
        self.assertTrue(m.check_subject_body_separtor())
        m = GitCommitMessage().parse_lines(["This is a subject line", "   ", "body"])
        self.assertTrue(m.check_subject_body_separtor())

    def testSubjectLimit(self):
        m = GitCommitMessage().parse_lines(
            ["This subject line is exactly 48 characters long"]
        )
        self.assertTrue(m.check_subject_limit())
        m = GitCommitMessage().parse_lines(
            ["This is a very long subject line that will obviously exceed the limit"]
        )
        self.assertFalse(m.check_subject_limit())
        m = GitCommitMessage().parse_lines(
            ["This 50-character subject line ends with an LF EOL\n"]
        )
        self.assertTrue(m.check_subject_limit())

    def testSubjectCapitalized(self):
        m = GitCommitMessage().parse_lines(["This subject line is capitalized"])
        self.assertTrue(m.check_subject_capitalized())
        m = GitCommitMessage().parse_lines(["this subject line is not capitalized"])
        self.assertFalse(m.check_subject_capitalized())

    def testSubjectNoPeriod(self):
        m = GitCommitMessage().parse_lines(["This subject line ends with a period."])
        self.assertFalse(m.check_subject_no_period())
        m = GitCommitMessage().parse_lines(
            ["This subject line does not end with a period"]
        )
        self.assertTrue(m.check_subject_no_period())

    def testBodyLimit(self):
        m = GitCommitMessage().parse_lines(
            ["This is a subject line", " ", "A short body line"]
        )
        self.assertTrue(m.check_body_limit())
        m = GitCommitMessage().parse_lines(
            [
                "This is a subject line",
                " ",
                "A very long body line which certainly exceeds the 72 char recommended limit",
            ]
        )
        self.assertFalse(m.check_body_limit())
        m = GitCommitMessage().parse_lines(
            [
                "This is a subject line",
                " ",
                "A body line with exactly 72 characters, followed by an EOL (Unix-style).\n",
            ]
        )
        self.assertTrue(m.check_body_limit())

    def testCheckAllRules(self):
        m = GitCommitMessage().parse_lines(
            ["This is a subject line", "", "A short body line"]
        )
        self.assertEqual(0, m.check_the_seven_rules())


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