# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals

import json
import os
import unittest

from taskgraph import files_changed
from mozunit import main

PARAMS = {
    'head_repository': 'https://hg.mozilla.org/mozilla-central',
    'head_rev': 'a14f88a9af7a',
}

FILES_CHANGED = [
    'devtools/client/debugger/new/index.html',
    'devtools/client/inspector/test/browser_inspector_highlighter-eyedropper-events.js',
    'devtools/client/inspector/test/head.js',
    'devtools/client/themes/rules.css',
    'devtools/client/webconsole/test/browser_webconsole_output_06.js',
    'devtools/server/actors/highlighters/eye-dropper.js',
    'devtools/server/actors/object.js',
    'docshell/base/nsDocShell.cpp',
    'dom/tests/mochitest/general/test_contentViewer_overrideDPPX.html',
    'taskcluster/scripts/builder/build-l10n.sh',
]


class FakeResponse:

    def json(self):
        with open(os.path.join(os.path.dirname(__file__), 'automationrelevance.json')) as f:
            return json.load(f)


class TestGetChangedFiles(unittest.TestCase):

    def setUp(self):
        files_changed._cache.clear()
        self.old_get = files_changed.requests.get

        def fake_get(url, **kwargs):
            return FakeResponse()
        files_changed.requests.get = fake_get

    def tearDown(self):
        files_changed.requests.get = self.old_get

    def test_get_changed_files(self):
        """Get_changed_files correctly gets the list of changed files in a push.
        This tests against the production hg.mozilla.org so that it will detect
        any changes in the format of the returned data."""
        self.assertEqual(
            sorted(files_changed.get_changed_files(PARAMS['head_repository'], PARAMS['head_rev'])),
            FILES_CHANGED)


class TestCheck(unittest.TestCase):

    def setUp(self):
        files_changed._cache[PARAMS['head_repository'], PARAMS['head_rev']] = FILES_CHANGED

    def test_check_no_params(self):
        self.assertTrue(files_changed.check({}, ["ignored"]))

    def test_check_no_match(self):
        self.assertFalse(files_changed.check(PARAMS, ["nosuch/**"]))

    def test_check_match(self):
        self.assertTrue(files_changed.check(PARAMS, ["devtools/**"]))


if __name__ == '__main__':
    main()
