@generate_skip_decorator(GitCommitBear)
class FakeGitHubMergeCommitBear(unittest.TestCase):

    def run_uut(self, *args, **kwargs):
        """
        Runs the unit-under-test (via `self.uut.run()`) and collects the
        messages of the yielded results as a list.

        :param args:   Positional arguments to forward to the run function.
        :param kwargs: Keyword arguments to forward to the run function.
        :return:       A list of the message strings.
        """
        return list(result.message for result in self.uut.run(*args, **kwargs))

    def setUp(self):
        self.msg_queue = Queue()
        self.section = Section('')
        self.uut = GitCommitBear(None, self.section, self.msg_queue)

        self._old_cwd = os.getcwd()
        self.gitdir = mkdtemp()
        os.chdir(self.gitdir)
        GitCommitBearTest.run_git_command('init')
        GitCommitBearTest.run_git_command('config', 'user.email coala@coala.io')
        GitCommitBearTest.run_git_command('config', 'user.name coala')

    def test_github_PR_merge_commit_offline(self):
        run_shell_command('echo "a" >> testfile1.txt')
        run_shell_command('git add testfile1.txt')
        run_shell_command('git commit -m "First commit"')
        commit_hash1, _ = run_shell_command('git rev-parse HEAD')
        commit_hash1 = commit_hash1.strip('\n')

        run_shell_command('git checkout -b feature-branch1')
        run_shell_command('echo "b" >> testfile2.txt')
        run_shell_command('git add testfile2.txt')
        run_shell_command('git commit -m "Second commit"')
        commit_hash2, _ = run_shell_command('git rev-parse HEAD')
        commit_hash2 = commit_hash2.strip('\n')

        run_shell_command('git checkout master')
        run_shell_command('git merge --no-ff feature-branch1')
        command = 'git commit --amend -m ' + '\"Merge ' + commit_hash1 + ' into ' + commit_hash2 + '\"'
        run_shell_command(command)

        self.assertEqual(self.run_uut(), [])

        run_shell_command('echo "c" >> testfile3.txt ')
        run_shell_command('git add testfile3.txt')
        run_shell_command('git commit -m "Adding First commit"')
        commit_hash1, _ = run_shell_command('git rev-parse HEAD')
        commit_hash1 = commit_hash1.strip('\n')

        run_shell_command('git checkout -b feature-branch2')
        run_shell_command('echo "d" >> testfile4.txt ')
        run_shell_command('git add testfile4.txt')
        run_shell_command('git commit -m "Second commit"')
        commit_hash2, _ = run_shell_command('git rev-parse HEAD')
        commit_hash2 = commit_hash2.strip('\n')

        run_shell_command('git checkout master')
        run_shell_command('git merge --no-ff feature-branch2')
        command = 'git commit --amend -m ' + '\"Merge ' + commit_hash1 + ' into ' + commit_hash2 + '\"'
        run_shell_command(command)

        self.assertEqual(self.run_uut(), [])