from collections import namedtuple

from actioner.utils.github import get_existing_task, get_issue_link
from tests import BaseTestCase

FakeIssue = namedtuple('FakeIssue', ['number', 'html_url', 'title'])


class IssueLinkTestCase(BaseTestCase):
    def setUp(self):
        super().setUp()
        self.issue = FakeIssue(123, 'https://github.com/repo/thing', 'issue title')

    def test_creates_link(self):
        self.assertEqual(get_issue_link(self.issue), "[#123](https://github.com/repo/thing)")


class ExistingTaskTestCase(BaseTestCase):
    def setUp(self):
        super().setUp()
        self.tasks = {
            123: '[#1](url): title',
            456: '[#2](url/2): title 2',
            789: '[#3](url/3): title 3',
        }

    def test_finds_existing_repos(self):
        self.assertEqual(
            get_existing_task(self.tasks, FakeIssue(1, 'url', 'title')),
            123
        )

    def test_not_existing_repo(self):
        self.assertIsNone(
            get_existing_task(self.tasks, FakeIssue(123, 'url', 'title'))
        )