"""Unit tests for the GitHub hosting service."""

from __future__ import unicode_literals

import hashlib
import hmac
import logging

from django.core.exceptions import ObjectDoesNotExist
from djblets.testing.decorators import add_fixtures

from reviewboard.scmtools.core import Branch, Commit
from reviewboard.hostingsvcs.errors import (AuthorizationError,
                                            RepositoryError)
from reviewboard.hostingsvcs.repository import RemoteRepository
from reviewboard.hostingsvcs.testing import HostingServiceTestCase
from reviewboard.reviews.models import ReviewRequest
from reviewboard.scmtools.crypto_utils import (decrypt_password,
                                               encrypt_password)
from reviewboard.scmtools.errors import SCMError
from reviewboard.site.models import LocalSite
from reviewboard.site.urlresolvers import local_site_reverse


class GitHubTestCase(HostingServiceTestCase):
    """Base class for GitHub test suites."""

    service_name = 'github'

    default_account_data = {
        'personal_token': encrypt_password('abc123'),
    }

    default_repository_extra_data = {
        'repository_plan': 'public',
        'github_public_repo_name': 'myrepo',
    }


class GitHubTests(GitHubTestCase):
    """Unit tests for the GitHub hosting service."""

    def test_service_support(self):
        """Testing GitHub service support capabilities"""
        self.assertTrue(self.service_class.supports_bug_trackers)
        self.assertTrue(self.service_class.supports_repositories)
        self.assertFalse(self.service_class.supports_ssh_key_association)

    def test_get_repository_fields_with_public_plan(self):
        """Testing GitHub.get_repository_fields with the public plan"""
        self.assertEqual(
            self.get_repository_fields(
                'Git',
                plan='public',
                fields={
                    'github_public_repo_name': 'myrepo',
                }
            ),
            {
                'path': 'git://github.com/myuser/myrepo.git',
                'mirror_path': 'git@github.com:myuser/myrepo.git',
            })

    def test_get_repository_fields_with_public_org_plan(self):
        """Testing GitHub.get_repository_fields with the public-org plan"""
        self.assertEqual(
            self.get_repository_fields(
                'Git',
                plan='public-org',
                fields={
                    'github_public_org_repo_name': 'myrepo',
                    'github_public_org_name': 'myorg',
                }
            ),
            {
                'path': 'git://github.com/myorg/myrepo.git',
                'mirror_path': 'git@github.com:myorg/myrepo.git',
            })

    def test_get_repository_fields_with_private_plan(self):
        """Testing GitHub.get_repository_fields with the private plan"""
        self.assertEqual(
            self.get_repository_fields(
                'Git',
                plan='private',
                fields={
                    'github_private_repo_name': 'myrepo',
                }
            ),
            {
                'path': 'git@github.com:myuser/myrepo.git',
                'mirror_path': '',
            })

    def test_get_repository_fields_with_private_org_plan(self):
        """Testing GitHub.get_repository_fields with the private-org plan"""
        self.assertEqual(
            self.get_repository_fields(
                'Git',
                plan='private-org',
                fields={
                    'github_private_org_repo_name': 'myrepo',
                    'github_private_org_name': 'myorg',
                }
            ),
            {
                'path': 'git@github.com:myorg/myrepo.git',
                'mirror_path': '',
            })

    def test_get_repo_api_url_with_public_plan(self):
        """Testing GitHub._get_repo_api_url with the public plan"""
        url = self._get_repo_api_url('public', {
            'github_public_repo_name': 'testrepo',
        })
        self.assertEqual(url, 'https://api.github.com/repos/myuser/testrepo')

    def test_get_repo_api_url_with_public_org_plan(self):
        """Testing GitHub._get_repo_api_url with the public-org plan"""
        url = self._get_repo_api_url('public-org', {
            'github_public_org_name': 'myorg',
            'github_public_org_repo_name': 'testrepo',
        })
        self.assertEqual(url, 'https://api.github.com/repos/myorg/testrepo')

    def test_get_repo_api_url_with_private_plan(self):
        """Testing GitHub._get_repo_api_url with the private plan"""
        url = self._get_repo_api_url('private', {
            'github_private_repo_name': 'testrepo',
        })
        self.assertEqual(url, 'https://api.github.com/repos/myuser/testrepo')

    def test_get_repo_api_url_with_private_org_plan(self):
        """Testing GitHub._get_repo_api_url with the private-org plan"""
        url = self._get_repo_api_url('private-org', {
            'github_private_org_name': 'myorg',
            'github_private_org_repo_name': 'testrepo',
        })
        self.assertEqual(url, 'https://api.github.com/repos/myorg/testrepo')

    def test_get_bug_tracker_field_with_public_plan(self):
        """Testing GitHub.get_bug_tracker_field with the public plan"""
        self.assertTrue(
            self.service_class.get_bug_tracker_requires_username('public'))
        self.assertEqual(
            self.service_class.get_bug_tracker_field('public', {
                'github_public_repo_name': 'myrepo',
                'hosting_account_username': 'myuser',
            }),
            'http://github.com/myuser/myrepo/issues#issue/%s')

    def test_get_bug_tracker_field_with_public_org_plan(self):
        """Testing GitHub.get_bug_tracker_field with the public-org plan"""
        self.assertFalse(
            self.service_class.get_bug_tracker_requires_username('public-org'))
        self.assertEqual(
            self.service_class.get_bug_tracker_field('public-org', {
                'github_public_org_name': 'myorg',
                'github_public_org_repo_name': 'myrepo',
            }),
            'http://github.com/myorg/myrepo/issues#issue/%s')

    def test_get_bug_tracker_field_with_private_plan(self):
        """Testing GitHub.get_bug_tracker_field with the private plan"""
        self.assertTrue(
            self.service_class.get_bug_tracker_requires_username('private'))
        self.assertEqual(
            self.service_class.get_bug_tracker_field('private', {
                'github_private_repo_name': 'myrepo',
                'hosting_account_username': 'myuser',
            }),
            'http://github.com/myuser/myrepo/issues#issue/%s')

    def test_get_bug_tracker_field_with_private_org_plan(self):
        """Testing GitHub.get_bug_tracker_field with the private-org plan"""
        self.assertFalse(self.service_class.get_bug_tracker_requires_username(
            'private-org'))
        self.assertEqual(
            self.service_class.get_bug_tracker_field('private-org', {
                'github_private_org_name': 'myorg',
                'github_private_org_repo_name': 'myrepo',
            }),
            'http://github.com/myorg/myrepo/issues#issue/%s')

    def test_check_repository_public(self):
        """Testing GitHub.check_repository with public repository"""
        self._test_check_repository(plan='public',
                                    github_public_repo_name='myrepo')

    def test_check_repository_private(self):
        """Testing GitHub.check_repository with private repository"""
        self._test_check_repository(plan='private',
                                    github_private_repo_name='myrepo')

    def test_check_repository_public_org(self):
        """Testing GitHub.check_repository with public org repository"""
        self._test_check_repository(plan='public-org',
                                    github_public_org_name='myorg',
                                    github_public_org_repo_name='myrepo',
                                    expected_owner='myorg')

    def test_check_repository_private_org(self):
        """Testing GitHub.check_repository with private org repository"""
        self._test_check_repository(plan='private-org',
                                    github_private_org_name='myorg',
                                    github_private_org_repo_name='myrepo',
                                    expected_owner='myorg')

    def test_check_repository_public_not_found(self):
        """Testing GitHub.check_repository with not found error and public
        repository
        """
        self._test_check_repository_error(
            plan='public',
            github_public_repo_name='myrepo',
            http_status=404,
            payload=b'{"message": "Not Found"}',
            expected_url='https://api.github.com/repos/myuser/myrepo',
            expected_error='A repository with this name was not found, '
                           'or your user may not own it.')

    def test_check_repository_private_not_found(self):
        """Testing GitHub.check_repository with not found error and private
        repository
        """
        self._test_check_repository_error(
            plan='private',
            github_private_repo_name='myrepo',
            http_status=404,
            payload=b'{"message": "Not Found"}',
            expected_url='https://api.github.com/repos/myuser/myrepo',
            expected_error='A repository with this name was not found, '
                           'or your user may not own it.')

    def test_check_repository_public_org_not_found(self):
        """Testing GitHub.check_repository with not found error and
        public organization repository
        """
        self._test_check_repository_error(
            plan='public-org',
            github_public_org_name='myorg',
            github_public_org_repo_name='myrepo',
            http_status=404,
            payload=b'{"message": "Not Found"}',
            expected_url='https://api.github.com/repos/myorg/myrepo',
            expected_error='A repository with this organization or name '
                           'was not found.')

    def test_check_repository_private_org_not_found(self):
        """Testing GitHub.check_repository with not found error and
        private organization repository
        """
        self._test_check_repository_error(
            plan='private-org',
            github_private_org_name='myorg',
            github_private_org_repo_name='myrepo',
            http_status=404,
            payload=b'{"message": "Not Found"}',
            expected_url='https://api.github.com/repos/myorg/myrepo',
            expected_error='A repository with this organization or name '
                           'was not found, or your user may not have access '
                           'to it.')

    def test_check_repository_public_plan_private_repo(self):
        """Testing GitHub.check_repository with public plan and
        private repository
        """
        self._test_check_repository_error(
            plan='public',
            github_public_repo_name='myrepo',
            http_status=200,
            payload=b'{"private": true}',
            expected_url='https://api.github.com/repos/myuser/myrepo',
            expected_error='This is a private repository, but you have '
                           'selected a public plan.')

    def test_check_repository_private_plan_public_repo(self):
        """Testing GitHub.check_repository with private plan and
        public repository
        """
        self._test_check_repository_error(
            plan='private',
            github_private_repo_name='myrepo',
            http_status=200,
            payload=b'{"private": false}',
            expected_url='https://api.github.com/repos/myuser/myrepo',
            expected_error='This is a public repository, but you have '
                           'selected a private plan.')

    def test_check_repository_public_org_plan_private_repo(self):
        """Testing GitHub.check_repository with public organization plan and
        private repository
        """
        self._test_check_repository_error(
            plan='public-org',
            github_public_org_name='myorg',
            github_public_org_repo_name='myrepo',
            http_status=200,
            payload=b'{"private": true}',
            expected_url='https://api.github.com/repos/myorg/myrepo',
            expected_error='This is a private repository, but you have '
                           'selected a public plan.')

    def test_check_repository_private_org_plan_public_repo(self):
        """Testing GitHub.check_repository with private organization plan and
        public repository
        """
        self._test_check_repository_error(
            plan='private-org',
            github_private_org_name='myorg',
            github_private_org_repo_name='myrepo',
            http_status=200,
            payload=b'{"private": false}',
            expected_url='https://api.github.com/repos/myorg/myrepo',
            expected_error='This is a public repository, but you have '
                           'selected a private plan.')

    def test_authorize(self):
        """Testing GitHub.authorize"""
        paths = {
            '/user': {
                'headers': {
                    str('X-OAuth-Scopes'): str('user, repo, admin:repo_hook'),
                },
                'payload': b'{}',
            },
        }

        hosting_account = self.create_hosting_account(data={})
        self.assertFalse(hosting_account.is_authorized)

        with self.setup_http_test(self.make_handler_for_paths(paths),
                                  hosting_account=hosting_account,
                                  expected_http_calls=1) as ctx:
            ctx.service.authorize(
                username='myuser',
                password='abcde12345abcde12345abcde12345abcde12345')

        self.assertTrue(hosting_account.is_authorized)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user',
            method='GET',
            username='myuser',
            password='abcde12345abcde12345abcde12345abcde12345')

        self.assertIn('personal_token', hosting_account.data)
        self.assertNotIn('authorizations', hosting_account.data)
        self.assertEqual(
            decrypt_password(hosting_account.data['personal_token']),
            'abcde12345abcde12345abcde12345abcde12345')

    def test_authorize_with_missing_scopes(self):
        """Testing GitHub.authorize with missing scopes"""
        paths = {
            '/user': {
                'headers': {
                    str('X-OAuth-Scopes'): str('user, foobar'),
                },
                'payload': b'{}',
            },
        }

        hosting_account = self.create_hosting_account(data={})
        self.assertFalse(hosting_account.is_authorized)

        message = (
            'This GitHub Personal Access Token must have the following '
            'scopes enabled: admin:repo_hook, repo'
        )

        with self.setup_http_test(self.make_handler_for_paths(paths),
                                  hosting_account=hosting_account,
                                  expected_http_calls=1) as ctx:
            with self.assertRaisesMessage(AuthorizationError, message):
                ctx.service.authorize(
                    username='myuser',
                    password='abcde12345abcde12345abcde12345abcde12345')

        self.assertFalse(hosting_account.is_authorized)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user',
            method='GET',
            username='myuser',
            password='abcde12345abcde12345abcde12345abcde12345')

        self.assertNotIn('personal_token', hosting_account.data)
        self.assertNotIn('authorizations', hosting_account.data)

    def test_is_authorized_with_personal_token(self):
        """Testing GitHub.is_authorized with personal access token"""
        hosting_account = self.create_hosting_account(data={
            'personal_token': encrypt_password('abc123'),
        })
        self.assertTrue(hosting_account.is_authorized)

    def test_is_authorized_with_legacy_authorization(self):
        """Testing GitHub.is_authorized with legacy authorization token"""
        hosting_account = self.create_hosting_account(data={
            'authorization': {
                'token': 'abc123',
            },
        })
        self.assertTrue(hosting_account.is_authorized)

    def test_is_authorized_without_tokens(self):
        """Testing GitHub.is_authorized with legacy authorization token"""
        hosting_account = self.create_hosting_account(data={
            'authorizations': {},
        })
        self.assertFalse(hosting_account.is_authorized)

    def test_api_with_personal_accesstoken(self):
        """Testing GitHub API access with personal access token"""
        with self.setup_http_test(payload=b'{}',
                                  expected_http_calls=1) as ctx:
            ctx.hosting_account.data = {
                'personal_token': encrypt_password('my-personal-token'),
            }
            ctx.client.api_get('https://api.github.com/user')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user',
            username='myuser',
            password='my-personal-token')

    def test_api_with_legacy_auth_token(self):
        """Testing GitHub API access with legacy auth tokens"""
        with self.setup_http_test(payload=b'{}',
                                  expected_http_calls=1) as ctx:
            ctx.hosting_account.data = {
                'authorization': {
                    'token': 'my-legacy-token',
                },
            }
            ctx.client.api_get('https://api.github.com/user')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user',
            username='myuser',
            password='my-legacy-token')

    def test_get_branches(self):
        """Testing GitHub.get_branches"""
        payload = self.dump_json([
            {
                'ref': 'refs/heads/master',
                'object': {
                    'sha': '859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                }
            },
            {
                'ref': 'refs/heads/release-1.7.x',
                'object': {
                    'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15',
                }
            },
            {
                'ref': 'refs/heads/some-component/fix',
                'object': {
                    'sha': '764015ef492c8cb1546363b45fee7ab6d1a182ee',
                }
            },
            {
                'ref': 'refs/tags/release-1.7.11',
                'object': {
                    'sha': 'f5a35f1d8a8dcefb336a8e3211334f1f50ea7792',
                }
            },
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            repository = ctx.create_repository()
            branches = ctx.service.get_branches(repository)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/myrepo/git/refs/heads',
            username='myuser',
            password='abc123')

        self.assertEqual(
            branches,
            [
                Branch(id='master',
                       commit='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                       default=True),
                Branch(id='release-1.7.x',
                       commit='92463764015ef463b4b6d1a1825fee7aeec8cb15',
                       default=False),
                Branch(id='some-component/fix',
                       commit='764015ef492c8cb1546363b45fee7ab6d1a182ee',
                       default=False),
            ])

    def test_get_branches_master_default(self):
        """Testing GitHub.get_branches master default"""
        payload = self.dump_json([
            {
                'ref': 'refs/heads/main',
                'object': {
                    'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15',
                }
            },
            {
                'ref': 'refs/heads/master',
                'object': {
                    'sha': '859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                }
            },
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            repository = ctx.create_repository()
            branches = ctx.service.get_branches(repository)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/myrepo/git/refs/heads',
            username='myuser',
            password='abc123')

        self.assertEqual(
            branches,
            [
                Branch(id='main',
                       commit='92463764015ef463b4b6d1a1825fee7aeec8cb15',
                       default=False),
                Branch(id='master',
                       commit='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                       default=True),
            ])

    def test_get_branches_main_default(self):
        """Testing GitHub.get_branches main default"""
        payload = self.dump_json([
            {
                'ref': 'refs/heads/other',
                'object': {
                    'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15',
                }
            },
            {
                'ref': 'refs/heads/main',
                'object': {
                    'sha': '859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                }
            },
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            repository = ctx.create_repository()
            branches = ctx.service.get_branches(repository)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/myrepo/git/refs/heads',
            username='myuser',
            password='abc123')

        self.assertEqual(
            branches,
            [
                Branch(id='other',
                       commit='92463764015ef463b4b6d1a1825fee7aeec8cb15',
                       default=False),
                Branch(id='main',
                       commit='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                       default=True),
            ])

    def test_get_branches_default_fallback(self):
        """Testing GitHub.get_branches default fallback"""
        payload = self.dump_json([
            {
                'ref': 'refs/heads/branch1',
                'object': {
                    'sha': '859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                }
            },
            {
                'ref': 'refs/heads/branch2',
                'object': {
                    'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15',
                }
            },
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            repository = ctx.create_repository()
            branches = ctx.service.get_branches(repository)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/myrepo/git/refs/heads',
            username='myuser',
            password='abc123')

        self.assertEqual(
            branches,
            [
                Branch(id='branch1',
                       commit='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                       default=True),
                Branch(id='branch2',
                       commit='92463764015ef463b4b6d1a1825fee7aeec8cb15',
                       default=False),
            ])

    def test_get_commits(self):
        """Testing GitHub.get_commits"""
        payload = self.dump_json([
            {
                'commit': {
                    'author': {'name': 'Christian Hammond'},
                    'committer': {'date': '2013-06-25T23:31:22Z'},
                    'message': 'Fixed the bug number for the '
                               'blacktriangledown bug.',
                },
                'sha': '859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                'parents': [
                    {'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15'}
                ],
            },
            {
                'commit': {
                    'author': {'name': 'Christian Hammond'},
                    'committer': {'date': '2013-06-25T23:30:59Z'},
                    'message': "Merge branch 'release-1.7.x'",
                },
                'sha': '92463764015ef463b4b6d1a1825fee7aeec8cb15',
                'parents': [
                    {'sha': 'f5a35f1d8a8dcefb336a8e3211334f1f50ea7792'},
                    {'sha': '6c5f3465da5ed03dca8128bb3dd03121bd2cddb2'},
                ],
            },
            {
                'commit': {
                    'author': {'name': 'David Trowbridge'},
                    'committer': {'date': '2013-06-25T22:41:09Z'},
                    'message': 'Add DIFF_PARSE_ERROR to the '
                               'ValidateDiffResource.create error list.',
                },
                'sha': 'f5a35f1d8a8dcefb336a8e3211334f1f50ea7792',
                'parents': [],
            }
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            repository = ctx.create_repository()
            commits = ctx.service.get_commits(
                repository=repository,
                start='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817')

        ctx.assertHTTPCall(
            0,
            url=('https://api.github.com/repos/myuser/myrepo/commits'
                 '?sha=859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817'),
            username='myuser',
            password='abc123')

        self.assertEqual(
            commits,
            [
                Commit(author_name='Christian Hammond',
                       date='2013-06-25T23:31:22Z',
                       id='859d4e148ce3ce60bbda6622cdbe5c2c2f8d9817',
                       message=('Fixed the bug number for the '
                                'blacktriangledown bug.'),
                       parent='92463764015ef463b4b6d1a1825fee7aeec8cb15'),
                Commit(author_name='Christian Hammond',
                       date='2013-06-25T23:30:59Z',
                       id='92463764015ef463b4b6d1a1825fee7aeec8cb15',
                       message="Merge branch 'release-1.7.x'",
                       parent='f5a35f1d8a8dcefb336a8e3211334f1f50ea7792'),
                Commit(author_name='David Trowbridge',
                       date='2013-06-25T22:41:09Z',
                       id='f5a35f1d8a8dcefb336a8e3211334f1f50ea7792',
                       message=('Add DIFF_PARSE_ERROR to the '
                                'ValidateDiffResource.create error list.'),
                       parent=''),
            ])

        for commit in commits:
            self.assertIsNone(commit.diff)

    def test_get_change(self):
        """Testing GitHub.get_change"""
        commit_sha = '1c44b461cebe5874a857c51a4a13a849a4d1e52d'
        parent_sha = '44568f7d33647d286691517e6325fea5c7a21d5e'
        tree_sha = '56e25e58380daf9b4dfe35677ae6043fe1743922'

        paths = {
            '/repos/myuser/myrepo/commits': {
                'payload': self.dump_json([
                    {
                        'commit': {
                            'author': {'name': 'David Trowbridge'},
                            'committer': {'date': '2013-06-25T23:31:22Z'},
                            'message': 'Move .clearfix to defs.less',
                        },
                        'sha': commit_sha,
                        'parents': [{'sha': parent_sha}],
                    },
                ])
            },
            '/repos/myuser/myrepo/compare/%s...%s' % (parent_sha,
                                                      commit_sha): {
                'payload': self.dump_json({
                    'base_commit': {
                        'commit': {
                            'tree': {'sha': tree_sha},
                        },
                    },
                    'files': [
                        {
                            'sha': '4344b3ad41b171ea606e88e9665c34cca602affb',
                            'filename': 'reviewboard/static/rb/css/defs.less',
                            'status': 'modified',
                            'patch': (
                                '@@ -182,4 +182,6 @@\n'
                                ' }\n'
                                ' \n'
                                '+.foo {\n'
                                '+}\n'
                                ' \n'
                                ' table {'
                            ),
                        },
                        {
                            'sha': '8e3129277b018b169cb8d13771433fbcd165a17c',
                            'filename': ('reviewboard/static/rb/css/'
                                         'reviews.less'),
                            'status': 'modified',
                            'patch': (
                                '@@ -1311,6 +1311,4 @@\n'
                                ' }\n'
                                ' \n'
                                '-.bar {\n'
                                '-}\n'
                                ' \n'
                                ' h1 {'
                            ),
                        },
                        {
                            'sha': '17ba0791499db908433b80f37c5fbc89b870084b',
                            'filename': 'new_filename',
                            'previous_filename': 'old_filename',
                            'status': 'renamed',
                            'patch': (
                                '@@ -1,1 +1,1 @@\n'
                                '- foo\n'
                                '+ bar'
                            ),
                        },
                    ],
                }),
            },
            '/repos/myuser/myrepo/git/trees/%s' % tree_sha: {
                'payload': self.dump_json({
                    'tree': [
                        {
                            'path': 'reviewboard/static/rb/css/defs.less',
                            'sha': '830a40c3197223c6a0abb3355ea48891a1857bfd',
                        },
                        {
                            'path': 'reviewboard/static/rb/css/reviews.less',
                            'sha': '535cd2c4211038d1bb8ab6beaed504e0db9d7e62',
                        },
                        {
                            'path': 'old_filename',
                            'sha': '356a192b7913b04c54574d18c28d46e6395428ab',
                        }
                    ],
                }),
            },
        }

        with self.setup_http_test(self.make_handler_for_paths(paths),
                                  expected_http_calls=3) as ctx:
            repository = ctx.create_repository()
            change = ctx.service.get_change(repository=repository,
                                            revision=commit_sha)

        ctx.assertHTTPCall(
            0,
            url=('https://api.github.com/repos/myuser/myrepo/commits'
                 '?sha=1c44b461cebe5874a857c51a4a13a849a4d1e52d'),
            username='myuser',
            password='abc123')

        ctx.assertHTTPCall(
            1,
            url=('https://api.github.com/repos/myuser/myrepo/compare/'
                 '44568f7d33647d286691517e6325fea5c7a21d5e...'
                 '1c44b461cebe5874a857c51a4a13a849a4d1e52d'),
            username='myuser',
            password='abc123')

        ctx.assertHTTPCall(
            2,
            url=('https://api.github.com/repos/myuser/myrepo/git/trees/'
                 '56e25e58380daf9b4dfe35677ae6043fe1743922?recursive=1'),
            username='myuser',
            password='abc123')

        self.assertEqual(
            change,
            Commit(author_name='David Trowbridge',
                   date='2013-06-25T23:31:22Z',
                   id='1c44b461cebe5874a857c51a4a13a849a4d1e52d',
                   message='Move .clearfix to defs.less',
                   parent='44568f7d33647d286691517e6325fea5c7a21d5e'))
        self.assertEqual(
            change.diff,
            b'diff --git a/reviewboard/static/rb/css/defs.less'
            b' b/reviewboard/static/rb/css/defs.less\n'
            b'index 830a40c3197223c6a0abb3355ea48891a1857bfd'
            b'..4344b3ad41b171ea606e88e9665c34cca602affb 100644\n'
            b'--- a/reviewboard/static/rb/css/defs.less\n'
            b'+++ b/reviewboard/static/rb/css/defs.less\n'
            b'@@ -182,4 +182,6 @@\n'
            b' }\n'
            b' \n'
            b'+.foo {\n'
            b'+}\n'
            b' \n'
            b' table {\n'
            b'diff --git a/reviewboard/static/rb/css/reviews.less'
            b' b/reviewboard/static/rb/css/reviews.less\n'
            b'index 535cd2c4211038d1bb8ab6beaed504e0db9d7e62'
            b'..8e3129277b018b169cb8d13771433fbcd165a17c 100644\n'
            b'--- a/reviewboard/static/rb/css/reviews.less\n'
            b'+++ b/reviewboard/static/rb/css/reviews.less\n'
            b'@@ -1311,6 +1311,4 @@\n'
            b' }\n'
            b' \n'
            b'-.bar {\n'
            b'-}\n'
            b' \n'
            b' h1 {\n'
            b'diff --git a/new_filename b/new_filename\n'
            b'rename from old_filename\n'
            b'rename to new_filename\n'
            b'index 356a192b7913b04c54574d18c28d46e6395428ab'
            b'..17ba0791499db908433b80f37c5fbc89b870084b\n'
            b'--- a/old_filename\n'
            b'+++ b/new_filename\n'
            b'@@ -1,1 +1,1 @@\n'
            b'- foo\n'
            b'+ bar\n')

    def test_get_change_with_not_found(self):
        """Testing GitHub.get_change with commit not found"""
        with self.setup_http_test(status_code=404,
                                  payload=b'{"message": "Not Found"}',
                                  expected_http_calls=1) as ctx:
            with self.assertRaisesMessage(SCMError, 'Not Found'):
                repository = ctx.create_repository()
                ctx.service.get_change(
                    repository=repository,
                    revision='1c44b461cebe5874a857c51a4a13a849a4d1e52d')

        ctx.assertHTTPCall(
            0,
            url=('https://api.github.com/repos/myuser/myrepo/commits'
                 '?sha=1c44b461cebe5874a857c51a4a13a849a4d1e52d'),
            username='myuser',
            password='abc123')

    def test_get_remote_repositories_with_owner(self):
        """Testing GitHub.get_remote_repositories with requesting
        authenticated user's repositories
        """
        base_url = 'https://api.github.com/user/repos'
        paths = {
            '/user/repos': {
                'payload': self.dump_json([
                    {
                        'id': 1,
                        'owner': {
                            'login': 'myuser',
                        },
                        'name': 'myrepo',
                        'clone_url': 'myrepo_path',
                        'mirror_url': 'myrepo_mirror',
                        'private': 'false'
                    },
                ]),
                'headers': {
                    b'Link': b'<%s?page=2>; rel="next"' % base_url,
                },
            },
            '/user/repos?page=2': {
                'payload': self.dump_json([
                    {
                        'id': 2,
                        'owner': {
                            'login': 'myuser',
                        },
                        'name': 'myrepo2',
                        'clone_url': 'myrepo_path2',
                        'mirror_url': 'myrepo_mirror2',
                        'private': 'true'
                    },
                ]),
                'headers': {
                    b'Link': b'<%s?page=1>; rel="prev"' % base_url,
                },
            },
        }

        # Fetch and check the first page.
        with self.setup_http_test(self.make_handler_for_paths(paths),
                                  expected_http_calls=1) as ctx:
            paginator = ctx.service.get_remote_repositories('myuser')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user/repos',
            username='myuser',
            password='abc123')

        self.assertEqual(len(paginator.page_data), 1)
        self.assertFalse(paginator.has_prev)
        self.assertTrue(paginator.has_next)
        repo = paginator.page_data[0]

        self.assertIsInstance(repo, RemoteRepository)
        self.assertEqual(repo.id, 'myuser/myrepo')
        self.assertEqual(repo.owner, 'myuser')
        self.assertEqual(repo.name, 'myrepo')
        self.assertEqual(repo.scm_type, 'Git')
        self.assertEqual(repo.path, 'myrepo_path')
        self.assertEqual(repo.mirror_path, 'myrepo_mirror')

        # Fetch and check the second page.
        paginator.next()

        ctx.assertHTTPCall(
            1,
            url='https://api.github.com/user/repos?page=2',
            username='myuser',
            password='abc123')

        self.assertEqual(len(paginator.page_data), 1)
        self.assertTrue(paginator.has_prev)
        self.assertFalse(paginator.has_next)
        repo = paginator.page_data[0]

        self.assertIsInstance(repo, RemoteRepository)
        self.assertEqual(repo.id, 'myuser/myrepo2')
        self.assertEqual(repo.owner, 'myuser')
        self.assertEqual(repo.name, 'myrepo2')
        self.assertEqual(repo.scm_type, 'Git')
        self.assertEqual(repo.path, 'myrepo_path2')
        self.assertEqual(repo.mirror_path, 'myrepo_mirror2')

    def test_get_remote_repositories_with_other_user(self):
        """Testing GitHub.get_remote_repositories with requesting user's
        repositories
        """
        repos1 = self.dump_json([
            {
                'id': 1,
                'owner': {
                    'login': 'other',
                },
                'name': 'myrepo',
                'clone_url': 'myrepo_path',
                'mirror_url': 'myrepo_mirror',
                'private': 'false'
            }
        ])

        headers = {
            b'Link': (
                b'<https://api.github.com/users/other/repos'
                b'?page=2>; rel="next"'
            ),
        }

        with self.setup_http_test(payload=repos1,
                                  headers=headers,
                                  expected_http_calls=1) as ctx:
            paginator = ctx.service.get_remote_repositories('other')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/users/other/repos',
            username='myuser',
            password='abc123')

        self.assertEqual(len(paginator.page_data), 1)
        public_repo = paginator.page_data[0]
        self.assertIsInstance(public_repo, RemoteRepository)
        self.assertEqual(public_repo.id, 'other/myrepo')
        self.assertEqual(public_repo.owner, 'other')
        self.assertEqual(public_repo.name, 'myrepo')
        self.assertEqual(public_repo.scm_type, 'Git')
        self.assertEqual(public_repo.path, 'myrepo_path')
        self.assertEqual(public_repo.mirror_path, 'myrepo_mirror')

    def test_get_remote_repositories_with_org(self):
        """Testing GitHub.get_remote_repositories with requesting
        organization's repositories
        """
        payload = self.dump_json([
            {
                'id': 1,
                'owner': {
                    'login': 'myorg',
                },
                'name': 'myrepo',
                'clone_url': 'myrepo_path',
                'mirror_url': 'myrepo_mirror',
                'private': 'false'
            },
            {
                'id': 2,
                'owner': {
                    'login': 'myuser',
                },
                'name': 'myrepo2',
                'clone_url': 'myrepo_path2',
                'mirror_url': 'myrepo_mirror2',
                'private': 'true'
            }
        ])

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            paginator = ctx.service.get_remote_repositories('myorg',
                                                            'organization')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/orgs/myorg/repos',
            username='myuser',
            password='abc123')

        self.assertEqual(len(paginator.page_data), 2)
        public_repo, private_repo = paginator.page_data

        self.assertIsInstance(public_repo, RemoteRepository)
        self.assertEqual(public_repo.id, 'myorg/myrepo')
        self.assertEqual(public_repo.owner, 'myorg')
        self.assertEqual(public_repo.name, 'myrepo')
        self.assertEqual(public_repo.scm_type, 'Git')
        self.assertEqual(public_repo.path, 'myrepo_path')
        self.assertEqual(public_repo.mirror_path, 'myrepo_mirror')

        self.assertIsInstance(private_repo, RemoteRepository)
        self.assertEqual(private_repo.id, 'myuser/myrepo2')
        self.assertEqual(private_repo.owner, 'myuser')
        self.assertEqual(private_repo.name, 'myrepo2')
        self.assertEqual(private_repo.scm_type, 'Git')
        self.assertEqual(private_repo.path, 'myrepo_path2')
        self.assertEqual(private_repo.mirror_path, 'myrepo_mirror2')

    def test_get_remote_repositories_with_defaults(self):
        """Testing GitHub.get_remote_repositories with default values"""
        with self.setup_http_test(payload=b'{}',
                                  expected_http_calls=1) as ctx:
            ctx.service.get_remote_repositories()

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user/repos',
            username='myuser',
            password='abc123')

    def test_get_remote_repositories_with_filter(self):
        """Testing GitHub.get_remote_repositories with ?filter-type="""
        with self.setup_http_test(payload=b'[]',
                                  expected_http_calls=1) as ctx:
            ctx.service.get_remote_repositories('myuser',
                                                filter_type='private')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/user/repos?type=private',
            username='myuser',
            password='abc123')

    def test_get_remote_repository(self):
        """Testing GitHub.get_remote_repository"""
        payload = self.dump_json({
            'id': 1,
            'owner': {
                'login': 'myuser',
            },
            'name': 'myrepo',
            'clone_url': 'myrepo_path',
            'mirror_url': 'myrepo_mirror',
            'private': 'false'
        })

        with self.setup_http_test(payload=payload,
                                  expected_http_calls=1) as ctx:
            remote_repository = \
                ctx.service.get_remote_repository('myuser/myrepo')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/myrepo',
            username='myuser',
            password='abc123')

        self.assertIsInstance(remote_repository, RemoteRepository)
        self.assertEqual(remote_repository.id, 'myuser/myrepo')
        self.assertEqual(remote_repository.owner, 'myuser')
        self.assertEqual(remote_repository.name, 'myrepo')
        self.assertEqual(remote_repository.scm_type, 'Git')
        self.assertEqual(remote_repository.path, 'myrepo_path')
        self.assertEqual(remote_repository.mirror_path, 'myrepo_mirror')

    def test_get_remote_repository_invalid(self):
        """Testing GitHub.get_remote_repository with invalid repository ID"""
        with self.setup_http_test(status_code=404,
                                  payload=b'{"message": "Not Found"}',
                                  expected_http_calls=1) as ctx:
            with self.assertRaises(ObjectDoesNotExist):
                ctx.service.get_remote_repository('myuser/invalid')

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/myuser/invalid',
            username='myuser',
            password='abc123')

    def _test_check_repository(self, expected_owner='myuser', **kwargs):
        """Test checking for a repository.

        Args:
            expected_owner (unicode):
                The expected owner of the repository.

            **kwargs (dict):
                Keyword arguments to pass to
                :py:meth:`check_repository()
                <reviewboard.hostingsvcs.gitlab.GitLab.check_repository>`.
        """
        with self.setup_http_test(payload=b'{}',
                                  expected_http_calls=1) as ctx:
            ctx.service.check_repository(**kwargs)

        ctx.assertHTTPCall(
            0,
            url='https://api.github.com/repos/%s/myrepo' % expected_owner,
            username='myuser',
            password='abc123')

    def _test_check_repository_error(self, http_status, payload, expected_url,
                                     expected_error, **kwargs):
        """Test error conditions when checking for a repository.

        Args:
            http_status (int):
                The HTTP status to simulate returning.

            payload (bytes):
                The payload to return, if ``http_status`` is 200.

            expected_url (unicode):
                The expected URL accessed (minus any query strings).

            expected_error (unicode):
                The expected error message from a raised exception.

            **kwargs (dict):
                Keyword arguments to pass to
                :py:meth:`check_repository()
                <reviewboard.hostingsvcs.gitlab.GitLab.check_repository>`.
        """
        if http_status != 200:
            payload = b'{"message": "not Found"}'

        with self.setup_http_test(status_code=http_status,
                                  payload=payload,
                                  expected_http_calls=1) as ctx:
            with self.assertRaisesMessage(RepositoryError, expected_error):
                ctx.service.check_repository(**kwargs)

        ctx.assertHTTPCall(
            0,
            url=expected_url,
            username='myuser',
            password='abc123')

    def _get_repo_api_url(self, plan, fields):
        """Return the base API URL for a repository.

        Args:
            plan (unicode):
                The name of the plan.

            fields (dict):
                Fields containing repository information.

        Returns:
            unicode:
            The API URL for the repository.
        """
        account = self.create_hosting_account()

        repository = self.create_repository(
            hosting_account=account,
            extra_data={
                'repository_plan': plan,
            })

        form = self.get_form(plan, fields)
        form.save(repository)

        return account.service._get_repo_api_url(repository)


class CloseSubmittedHookTests(GitHubTestCase):
    """Unit tests for the GitHub close-submitted webhook."""

    fixtures = ['test_users', 'test_scmtools']

    def test_close_submitted_hook(self):
        """Testing GitHub close_submitted hook with event=push"""
        self._test_post_commit_hook()

    @add_fixtures(['test_site'])
    def test_close_submitted_hook_with_local_site(self):
        """Testing GitHub close_submitted hook with event=push and using a
        Local Site
        """
        self._test_post_commit_hook(
            LocalSite.objects.get(name=self.local_site_name))

    @add_fixtures(['test_site'])
    def test_close_submitted_hook_with_unpublished_review_request(self):
        """Testing GitHub close_submitted hook with event=push and an
        un-published review request
        """
        self._test_post_commit_hook(publish=False)

    def test_close_submitted_hook_ping(self):
        """Testing GitHub close_submitted hook with event=ping"""
        account = self.create_hosting_account()
        repository = self.create_repository(hosting_account=account)

        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid(),
            event='ping')
        self.assertEqual(response.status_code, 200)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_repo(self):
        """Testing GitHub close_submitted hook with event=push and invalid
        repository
        """
        repository = self.create_repository()

        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid())
        self.assertEqual(response.status_code, 404)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_site(self):
        """Testing GitHub close_submitted hook with event=push and invalid
        Local Site
        """
        account = self.create_hosting_account()
        repository = self.create_repository(hosting_account=account)

        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            local_site_name='badsite',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid())
        self.assertEqual(response.status_code, 404)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_service_id(self):
        """Testing GitHub close_submitted hook with event=push and invalid
        hosting service ID
        """
        # We'll test against Bitbucket for this test.
        account = self.create_hosting_account()
        account.service_name = 'bitbucket'
        account.save()

        repository = self.create_repository(hosting_account=account)

        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid())
        self.assertEqual(response.status_code, 404)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_event(self):
        """Testing GitHub close_submitted hook with invalid event"""
        account = self.create_hosting_account()
        repository = self.create_repository(hosting_account=account)
        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid(),
            event='foo')
        self.assertEqual(response.status_code, 400)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_signature(self):
        """Testing GitHub close_submitted hook with invalid signature"""
        account = self.create_hosting_account()
        repository = self.create_repository(hosting_account=account)
        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url,
            secret='bad-secret')
        self.assertEqual(response.status_code, 400)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

    def test_close_submitted_hook_with_invalid_review_requests(self):
        """Testing GitHub close_submitted hook with event=push and invalid
        review requests
        """
        self.spy_on(logging.error)

        account = self.create_hosting_account()
        repository = self.create_repository(hosting_account=account)

        review_request = self.create_review_request(repository=repository,
                                                    publish=True)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url='/r/9999/',
            secret=repository.get_or_create_hooks_uuid())
        self.assertEqual(response.status_code, 200)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)
        self.assertEqual(review_request.changedescs.count(), 0)

        self.assertTrue(logging.error.called_with(
            'close_all_review_requests: Review request #%s does not exist.',
            9999))

    def _test_post_commit_hook(self, local_site=None, publish=True):
        """Testing posting to a commit hook.

        This will simulate pushing a commit and posting the resulting webhook
        payload from GitHub to the handler for the hook.

        Args:
            local_site (reviewboard.site.models.LocalSite, optional):
                The Local Site owning the review request.

            publish (bool, optional):
                Whether to test with a published review request.
        """
        account = self.create_hosting_account(local_site=local_site)
        repository = self.create_repository(hosting_account=account,
                                            local_site=local_site)

        review_request = self.create_review_request(repository=repository,
                                                    local_site=local_site,
                                                    publish=publish)
        self.assertEqual(review_request.status, review_request.PENDING_REVIEW)

        url = local_site_reverse(
            'github-hooks-close-submitted',
            local_site=local_site,
            kwargs={
                'repository_id': repository.pk,
                'hosting_service_id': 'github',
            })

        response = self._post_commit_hook_payload(
            post_url=url,
            review_request_url=review_request.get_absolute_url(),
            secret=repository.get_or_create_hooks_uuid())
        self.assertEqual(response.status_code, 200)

        review_request = ReviewRequest.objects.get(pk=review_request.pk)
        self.assertTrue(review_request.public)
        self.assertEqual(review_request.status, review_request.SUBMITTED)
        self.assertEqual(review_request.changedescs.count(), 1)

        changedesc = review_request.changedescs.get()
        self.assertEqual(changedesc.text, 'Pushed to master (1c44b46)')

    def _post_commit_hook_payload(self, post_url, review_request_url, secret,
                                  event='push'):
        """Post a payload for a hook for testing.

        Args:
            post_url (unicode):
                The URL to post to.

            review_request_url (unicode):
                The URL of the review request being represented in the
                payload.

            secret (unicode):
                The HMAC secret for the message.

            event (unicode, optional):
                The webhook event.

        Results:
            django.core.handlers.request.wsgi.WSGIRequest:
            The post request.
        """
        payload = self.dump_json({
            # NOTE: This payload only contains the content we make
            #       use of in the hook.
            'ref': 'refs/heads/master',
            'commits': [
                {
                    'id': '1c44b461cebe5874a857c51a4a13a849a4d1e52d',
                    'message': 'This is my fancy commit\n'
                               '\n'
                               'Reviewed at http://example.com%s'
                               % review_request_url
                },
            ]
        })

        m = hmac.new(bytes(secret), payload, hashlib.sha1)

        return self.client.post(
            post_url,
            payload,
            content_type='application/json',
            HTTP_X_GITHUB_EVENT=event,
            HTTP_X_HUB_SIGNATURE='sha1=%s' % m.hexdigest())
