Refactor WPT Export to ensure only one PR in flight at a time

third_party/WebKit/Tools/Scripts/webkitpy/w3c/github_unittest.py

-# Copyright 2016 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import base64
-import unittest
-from webkitpy.common.host_mock import MockHost
-from webkitpy.w3c.github import GitHub
-
-
-class GitHubEnvTest(unittest.TestCase):
-
-    def setUp(self):
-        self.host = MockHost()
-
-    def test_requires_env_vars(self):
-        self.assertRaises(AssertionError, lambda: GitHub(self.host))
-
-    def test_requires_gh_user_env_var(self):
-        self.host.environ['GH_USER'] = 'rutabaga'
-        self.assertRaises(AssertionError, lambda: GitHub(self.host))
-
-    def test_requires_gh_token_env_var(self):
-        self.host.environ['GH_TOKEN'] = 'deadbeefcafe'
-        self.assertRaises(AssertionError, lambda: GitHub(self.host))
-
-
-class GitHubTest(unittest.TestCase):
-
-    def setUp(self):
-        self.host = MockHost()
-        self.host.environ['GH_USER'] = 'rutabaga'
-        self.host.environ['GH_TOKEN'] = 'deadbeefcafe'
-        self.github = GitHub(self.host)
-
-    def test_properties(self):
-        self.assertEqual(self.github.user, 'rutabaga')
-        self.assertEqual(self.github.token, 'deadbeefcafe')
-
-    def test_auth_token(self):
-        expected = base64.encodestring('rutabaga:deadbeefcafe')
-        self.assertEqual(self.github.auth_token(), expected)
-
-    # TODO(jeffcarp): add create_pr tests