rhodecode/apps/repository/tests/test_repo_pullrequests.py

# Copyright (C) 2010-2023 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import mock
import pytest

import rhodecode
from rhodecode.lib import helpers as h
from rhodecode.lib.vcs.backends.base import MergeResponse, MergeFailureReason, Reference
from rhodecode.lib.vcs.nodes import FileNode
from rhodecode.lib.ext_json import json
from rhodecode.model.changeset_status import ChangesetStatusModel
from rhodecode.model.db import (
    PullRequest,
    ChangesetStatus,
    UserLog,
    Notification,
    ChangesetComment,
    Repository,
)
from rhodecode.model.meta import Session
from rhodecode.model.pull_request import PullRequestModel
from rhodecode.model.user import UserModel
from rhodecode.model.comment import CommentsModel
from rhodecode.tests import (
    assert_session_flash,
    TEST_USER_ADMIN_LOGIN,
    TEST_USER_REGULAR_LOGIN,
)
from rhodecode.tests.fixture_mods.fixture_utils import PRTestUtility
from rhodecode.tests.routes import route_path


@pytest.mark.usefixtures("app", "autologin_user")
@pytest.mark.backends("git", "hg")
class TestPullrequestsView(object):
    def test_index(self, backend):
        self.app.get(route_path("pullrequest_new", repo_name=backend.repo_name))

    def test_option_menu_create_pull_request_exists(self, backend):
        repo_name = backend.repo_name
        response = self.app.get(h.route_path("repo_summary", repo_name=repo_name))

        create_pr_link = '<a href="%s">Create Pull Request</a>' % route_path(
            "pullrequest_new", repo_name=repo_name
        )
        response.mustcontain(create_pr_link)

    def test_create_pr_form_with_raw_commit_id(self, backend):
        repo = backend.repo

        self.app.get(
            route_path(
                "pullrequest_new",
                repo_name=repo.repo_name,
                commit=repo.get_commit().raw_id,
            ),
            status=200,
        )

    @pytest.mark.parametrize("pr_merge_enabled", [True, False])
    @pytest.mark.parametrize("range_diff", ["0", "1"])
    def test_show(self, pr_util, pr_merge_enabled, range_diff):
        pull_request = pr_util.create_pull_request(
            mergeable=pr_merge_enabled, enable_notifications=False
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
                params={"range-diff": range_diff},
            )
        )

        for commit_id in pull_request.revisions:
            response.mustcontain(commit_id)

        response.mustcontain(pull_request.target_ref_parts.type)
        response.mustcontain(pull_request.target_ref_parts.name)

        response.mustcontain('class="pull-request-merge"')

        if pr_merge_enabled:
            response.mustcontain("Pull request reviewer approval is pending")
        else:
            response.mustcontain("Server-side pull request merging is disabled.")

        if range_diff == "1":
            response.mustcontain("Turn off: Show the diff as commit range")

    def test_show_versions_of_pr(self, backend, csrf_token):
        commits = [
            {
                "message": "initial-commit",
                "added": [FileNode(b"test-file.txt", b"LINE1\n")],
            },
            {
                "message": "commit-1",
                "changed": [FileNode(b"test-file.txt", b"LINE1\nLINE2\n")],
            },
            # Above is the initial version of PR that changes a single line
            # from now on we'll add 3x commit adding a nother line on each step
            {
                "message": "commit-2",
                "changed": [FileNode(b"test-file.txt", b"LINE1\nLINE2\nLINE3\n")],
            },
            {
                "message": "commit-3",
                "changed": [
                    FileNode(b"test-file.txt", b"LINE1\nLINE2\nLINE3\nLINE4\n")
                ],
            },
            {
                "message": "commit-4",
                "changed": [
                    FileNode(b"test-file.txt", b"LINE1\nLINE2\nLINE3\nLINE4\nLINE5\n")
                ],
            },
        ]

        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["initial-commit"])
        source = backend.create_repo(heads=["commit-1"])
        source_repo_name = source.repo_name
        target_repo_name = target.repo_name

        target_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["initial-commit"]
        )
        source_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["commit-1"]
        )

        response = self.app.post(
            route_path("pullrequest_create", repo_name=source.repo_name),
            [
                ("source_repo", source_repo_name),
                ("source_ref", source_ref),
                ("target_repo", target_repo_name),
                ("target_ref", target_ref),
                ("common_ancestor", commit_ids["initial-commit"]),
                ("pullrequest_title", "Title"),
                ("pullrequest_desc", "Description"),
                ("description_renderer", "markdown"),
                ("__start__", "review_members:sequence"),
                ("__start__", "reviewer:mapping"),
                ("user_id", "1"),
                ("__start__", "reasons:sequence"),
                ("reason", "Some reason"),
                ("__end__", "reasons:sequence"),
                ("__start__", "rules:sequence"),
                ("__end__", "rules:sequence"),
                ("mandatory", "False"),
                ("__end__", "reviewer:mapping"),
                ("__end__", "review_members:sequence"),
                ("__start__", "revisions:sequence"),
                ("revisions", commit_ids["commit-1"]),
                ("__end__", "revisions:sequence"),
                ("user", ""),
                ("csrf_token", csrf_token),
            ],
            status=302,
        )

        location = response.headers["Location"]

        pull_request_id = location.rsplit("/", 1)[1]
        assert pull_request_id != "new"
        pull_request = PullRequest.get(int(pull_request_id))

        pull_request_id = pull_request.pull_request_id

        # Show initial version of PR
        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            )
        )

        response.mustcontain("commit-1")
        response.mustcontain(no=["commit-2"])
        response.mustcontain(no=["commit-3"])
        response.mustcontain(no=["commit-4"])

        response.mustcontain('cb-addition"></span><span>LINE2</span>')
        response.mustcontain(no=["LINE3"])
        response.mustcontain(no=["LINE4"])
        response.mustcontain(no=["LINE5"])

        # update PR #1
        source_repo = Repository.get_by_repo_name(source_repo_name)
        backend.pull_heads(source_repo, heads=["commit-2"])
        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token},
        )

        # update PR #2
        source_repo = Repository.get_by_repo_name(source_repo_name)
        backend.pull_heads(source_repo, heads=["commit-3"])
        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token},
        )

        # update PR #3
        source_repo = Repository.get_by_repo_name(source_repo_name)
        backend.pull_heads(source_repo, heads=["commit-4"])
        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token},
        )

        # Show final version !
        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            )
        )

        # 3 updates, and the latest == 4
        response.mustcontain("4 versions available for this pull request")
        response.mustcontain(no=["rhodecode diff rendering error"])

        # initial show must have 3 commits, and 3 adds
        response.mustcontain("commit-1")
        response.mustcontain("commit-2")
        response.mustcontain("commit-3")
        response.mustcontain("commit-4")

        response.mustcontain('cb-addition"></span><span>LINE2</span>')
        response.mustcontain('cb-addition"></span><span>LINE3</span>')
        response.mustcontain('cb-addition"></span><span>LINE4</span>')
        response.mustcontain('cb-addition"></span><span>LINE5</span>')

        # fetch versions
        pr = PullRequest.get(pull_request_id)
        versions = [x.pull_request_version_id for x in pr.versions.all()]
        assert len(versions) == 3

        # show v1,v2,v3,v4
        def cb_line(text):
            return 'cb-addition"></span><span>{}</span>'.format(text)

        def cb_context(text):
            return (
                '<span class="cb-code"><span class="cb-action cb-context">'
                "</span><span>{}</span></span>".format(text)
            )

        commit_tests = {
            # in response, not in response
            1: (["commit-1"], ["commit-2", "commit-3", "commit-4"]),
            2: (["commit-1", "commit-2"], ["commit-3", "commit-4"]),
            3: (["commit-1", "commit-2", "commit-3"], ["commit-4"]),
            4: (["commit-1", "commit-2", "commit-3", "commit-4"], []),
        }
        diff_tests = {
            1: (["LINE2"], ["LINE3", "LINE4", "LINE5"]),
            2: (["LINE2", "LINE3"], ["LINE4", "LINE5"]),
            3: (["LINE2", "LINE3", "LINE4"], ["LINE5"]),
            4: (["LINE2", "LINE3", "LINE4", "LINE5"], []),
        }
        for idx, ver in enumerate(versions, 1):
            response = self.app.get(
                route_path(
                    "pullrequest_show",
                    repo_name=target_repo_name,
                    pull_request_id=pull_request_id,
                    params={"version": ver},
                )
            )

            response.mustcontain(no=["rhodecode diff rendering error"])
            response.mustcontain("Showing changes at v{}".format(idx))

            yes, no = commit_tests[idx]
            for y in yes:
                response.mustcontain(y)
            for n in no:
                response.mustcontain(no=n)

            yes, no = diff_tests[idx]
            for y in yes:
                response.mustcontain(cb_line(y))
            for n in no:
                response.mustcontain(no=n)

        # show diff between versions
        diff_compare_tests = {
            1: (["LINE3"], ["LINE1", "LINE2"]),
            2: (["LINE3", "LINE4"], ["LINE1", "LINE2"]),
            3: (["LINE3", "LINE4", "LINE5"], ["LINE1", "LINE2"]),
        }
        for idx, ver in enumerate(versions, 1):
            adds, context = diff_compare_tests[idx]

            to_ver = ver + 1
            if idx == 3:
                to_ver = "latest"

            response = self.app.get(
                route_path(
                    "pullrequest_show",
                    repo_name=target_repo_name,
                    pull_request_id=pull_request_id,
                    params={"from_version": versions[0], "version": to_ver},
                )
            )

            response.mustcontain(no=["rhodecode diff rendering error"])

            for a in adds:
                response.mustcontain(cb_line(a))
            for c in context:
                response.mustcontain(cb_context(c))

        # test version v2 -> v3
        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
                params={"from_version": versions[1], "version": versions[2]},
            )
        )

        response.mustcontain(cb_context("LINE1"))
        response.mustcontain(cb_context("LINE2"))
        response.mustcontain(cb_context("LINE3"))
        response.mustcontain(cb_line("LINE4"))

    def test_close_status_visibility(self, pr_util, user_util, csrf_token):
        # Logout
        response = self.app.post(
            h.route_path("logout"), params={"csrf_token": csrf_token}
        )
        # Login as regular user
        response = self.app.post(
            h.route_path("login"),
            {"username": TEST_USER_REGULAR_LOGIN, "password": "test12"},
        )

        pull_request = pr_util.create_pull_request(author=TEST_USER_REGULAR_LOGIN)

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        response.mustcontain("Server-side pull request merging is disabled.")

        assert_response = response.assert_response()
        # for regular user without a merge permissions, we don't see it
        assert_response.no_element_exists("#close-pull-request-action")

        user_util.grant_user_permission_to_repo(
            pull_request.target_repo,
            UserModel().get_by_username(TEST_USER_REGULAR_LOGIN),
            "repository.write",
        )
        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        response.mustcontain("Server-side pull request merging is disabled.")

        assert_response = response.assert_response()
        # now regular user has a merge permissions, we have CLOSE button
        assert_response.one_element_exists("#close-pull-request-action")

    def test_show_invalid_commit_id(self, pr_util):
        # Simulating invalid revisions which will cause a lookup error
        pull_request = pr_util.create_pull_request()
        pull_request.revisions = ["invalid"]
        Session().add(pull_request)
        Session().commit()

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        for commit_id in pull_request.revisions:
            response.mustcontain(commit_id)

    def test_show_invalid_source_reference(self, pr_util):
        pull_request = pr_util.create_pull_request()
        pull_request.source_ref = "branch:b:invalid"
        Session().add(pull_request)
        Session().commit()

        self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

    def test_edit_title_description(self, pr_util, csrf_token):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id

        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=pull_request.target_repo.repo_name,
                pull_request_id=pull_request_id,
            ),
            params={
                "edit_pull_request": "true",
                "title": "New title",
                "description": "New description",
                "csrf_token": csrf_token,
            },
        )

        assert_session_flash(
            response, "Pull request title & description updated.", category="success"
        )

        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.title == "New title"
        assert pull_request.description == "New description"

    def test_edit_title_description_special(self, pr_util, csrf_token):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id

        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=pull_request.target_repo.repo_name,
                pull_request_id=pull_request_id,
            ),
            params={
                "edit_pull_request": "true",
                "title": "New title {} {2} {foo}",
                "description": "New description",
                "csrf_token": csrf_token,
            },
        )

        assert_session_flash(
            response, "Pull request title & description updated.", category="success"
        )

        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.title_safe == "New title {{}} {{2}} {{foo}}"

    def test_edit_title_description_closed(self, pr_util, csrf_token):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id
        repo_name = pull_request.target_repo.repo_name
        pr_util.close()

        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=repo_name,
                pull_request_id=pull_request_id,
            ),
            params={
                "edit_pull_request": "true",
                "title": "New title",
                "description": "New description",
                "csrf_token": csrf_token,
            },
            status=200,
        )
        assert_session_flash(
            response, "Cannot update closed pull requests.", category="error"
        )

    def test_update_invalid_source_reference(self, pr_util, csrf_token):
        from rhodecode.lib.vcs.backends.base import UpdateFailureReason

        pull_request = pr_util.create_pull_request()
        pull_request.source_ref = "branch:invalid-branch:invalid-commit-id"
        Session().add(pull_request)
        Session().commit()

        pull_request_id = pull_request.pull_request_id

        response = self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=pull_request.target_repo.repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token},
        )

        expected_msg = str(
            PullRequestModel.UPDATE_STATUS_MESSAGES[
                UpdateFailureReason.MISSING_SOURCE_REF
            ]
        )
        assert_session_flash(response, expected_msg, category="error")

    def test_missing_target_reference(self, pr_util, csrf_token):
        from rhodecode.lib.vcs.backends.base import MergeFailureReason

        pull_request = pr_util.create_pull_request(approved=True, mergeable=True)
        unicode_reference = "branch:invalid-branch:invalid-commit-id"
        pull_request.target_ref = unicode_reference
        Session().add(pull_request)
        Session().commit()

        pull_request_id = pull_request.pull_request_id
        pull_request_url = route_path(
            "pullrequest_show",
            repo_name=pull_request.target_repo.repo_name,
            pull_request_id=pull_request_id,
        )

        response = self.app.get(pull_request_url)
        # target_ref_id = "invalid-branch"

        merge_resp = MergeResponse(
            True,
            True,
            Reference("commit", "STUB_COMMIT_ID", "STUB_COMMIT_ID"),
            MergeFailureReason.MISSING_TARGET_REF,
            metadata={
                "target_ref": PullRequest.unicode_to_reference(unicode_reference)
            },
        )
        response.assert_response().element_contains(
            'div[data-role="merge-message"]', merge_resp.merge_status_message
        )

    def test_comment_and_close_pull_request_custom_message_approved(
        self, pr_util, csrf_token, xhr_header
    ):
        pull_request = pr_util.create_pull_request(approved=True)
        pull_request_id = pull_request.pull_request_id
        author = pull_request.user_id
        repo = pull_request.target_repo.repo_id

        self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request_id,
            ),
            params={
                "close_pull_request": "1",
                "text": "Closing a PR",
                "csrf_token": csrf_token,
            },
            extra_environ=xhr_header,
        )

        journal = (
            UserLog.query()
            .filter(UserLog.user_id == author)
            .filter(UserLog.repository_id == repo)
            .order_by(UserLog.user_log_id.asc())
            .all()
        )
        assert journal[-1].action == "repo.pull_request.close"

        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.is_closed()

        status = ChangesetStatusModel().get_status(
            pull_request.source_repo, pull_request=pull_request
        )
        assert status == ChangesetStatus.STATUS_APPROVED
        comments = (
            ChangesetComment()
            .query()
            .filter(ChangesetComment.pull_request == pull_request)
            .order_by(ChangesetComment.comment_id.asc())
            .all()
        )
        assert comments[-1].text == "Closing a PR"

    def test_comment_force_close_pull_request_rejected(
        self, pr_util, csrf_token, xhr_header
    ):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id
        PullRequestModel().update_reviewers(
            pull_request_id,
            [
                (1, ["reason"], False, "reviewer", []),
                (2, ["reason2"], False, "reviewer", []),
            ],
            pull_request.author,
        )
        author = pull_request.user_id
        repo = pull_request.target_repo.repo_id

        self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request_id,
            ),
            params={"close_pull_request": "1", "csrf_token": csrf_token},
            extra_environ=xhr_header,
        )

        pull_request = PullRequest.get(pull_request_id)

        journal = (
            UserLog.query()
            .filter(UserLog.user_id == author, UserLog.repository_id == repo)
            .order_by(UserLog.user_log_id.asc())
            .all()
        )
        assert journal[-1].action == "repo.pull_request.close"

        # check only the latest status, not the review status
        status = ChangesetStatusModel().get_status(
            pull_request.source_repo, pull_request=pull_request
        )
        assert status == ChangesetStatus.STATUS_REJECTED

    def test_comment_and_close_pull_request(self, pr_util, csrf_token, xhr_header):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id

        response = self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            ),
            params={"close_pull_request": "true", "csrf_token": csrf_token},
            extra_environ=xhr_header,
        )

        assert response.json

        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.is_closed()

        # check only the latest status, not the review status
        status = ChangesetStatusModel().get_status(
            pull_request.source_repo, pull_request=pull_request
        )
        assert status == ChangesetStatus.STATUS_REJECTED

    def test_comment_and_close_pull_request_try_edit_comment(
        self, pr_util, csrf_token, xhr_header
    ):
        pull_request = pr_util.create_pull_request()
        pull_request_id = pull_request.pull_request_id
        target_scm = pull_request.target_repo.scm_instance()
        target_scm_name = target_scm.name

        response = self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=target_scm_name,
                pull_request_id=pull_request_id,
            ),
            params={
                "close_pull_request": "true",
                "csrf_token": csrf_token,
            },
            extra_environ=xhr_header,
        )

        assert response.json

        pull_request = PullRequest.get(pull_request_id)
        target_scm = pull_request.target_repo.scm_instance()
        target_scm_name = target_scm.name
        assert pull_request.is_closed()

        # check only the latest status, not the review status
        status = ChangesetStatusModel().get_status(
            pull_request.source_repo, pull_request=pull_request
        )
        assert status == ChangesetStatus.STATUS_REJECTED

        for comment_id in response.json.keys():
            test_text = "test"
            response = self.app.post(
                route_path(
                    "pullrequest_comment_edit",
                    repo_name=target_scm_name,
                    pull_request_id=pull_request_id,
                    comment_id=comment_id,
                ),
                extra_environ=xhr_header,
                params={
                    "csrf_token": csrf_token,
                    "text": test_text,
                },
                status=403,
            )
            assert response.status_int == 403

    def test_comment_and_comment_edit(self, pr_util, csrf_token, xhr_header):
        pull_request = pr_util.create_pull_request()
        target_scm = pull_request.target_repo.scm_instance()
        target_scm_name = target_scm.name

        response = self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=target_scm_name,
                pull_request_id=pull_request.pull_request_id,
            ),
            params={
                "csrf_token": csrf_token,
                "text": "init",
            },
            extra_environ=xhr_header,
        )
        assert response.json

        for comment_id in response.json.keys():
            assert comment_id
            test_text = "test"
            self.app.post(
                route_path(
                    "pullrequest_comment_edit",
                    repo_name=target_scm_name,
                    pull_request_id=pull_request.pull_request_id,
                    comment_id=comment_id,
                ),
                extra_environ=xhr_header,
                params={
                    "csrf_token": csrf_token,
                    "text": test_text,
                    "version": "0",
                },
            )
            text_form_db = (
                ChangesetComment.query()
                .filter(ChangesetComment.comment_id == comment_id)
                .first()
                .text
            )
            assert test_text == text_form_db

    def test_comment_and_comment_edit_special(self, pr_util, csrf_token, xhr_header):
        pull_request = pr_util.create_pull_request()
        target_scm = pull_request.target_repo.scm_instance()
        target_scm_name = target_scm.name

        response = self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=target_scm_name,
                pull_request_id=pull_request.pull_request_id,
            ),
            params={
                "csrf_token": csrf_token,
                "text": "init",
            },
            extra_environ=xhr_header,
        )
        assert response.json

        for comment_id in response.json.keys():
            test_text = "init"
            response = self.app.post(
                route_path(
                    "pullrequest_comment_edit",
                    repo_name=target_scm_name,
                    pull_request_id=pull_request.pull_request_id,
                    comment_id=comment_id,
                ),
                extra_environ=xhr_header,
                params={
                    "csrf_token": csrf_token,
                    "text": test_text,
                    "version": "0",
                },
                status=404,
            )
            assert response.status_int == 404

    def test_comment_and_try_edit_already_edited(self, pr_util, csrf_token, xhr_header):
        pull_request = pr_util.create_pull_request()
        target_scm = pull_request.target_repo.scm_instance()
        target_scm_name = target_scm.name

        response = self.app.post(
            route_path(
                "pullrequest_comment_create",
                repo_name=target_scm_name,
                pull_request_id=pull_request.pull_request_id,
            ),
            params={
                "csrf_token": csrf_token,
                "text": "init",
            },
            extra_environ=xhr_header,
        )
        assert response.json
        for comment_id in response.json.keys():
            test_text = "test"
            self.app.post(
                route_path(
                    "pullrequest_comment_edit",
                    repo_name=target_scm_name,
                    pull_request_id=pull_request.pull_request_id,
                    comment_id=comment_id,
                ),
                extra_environ=xhr_header,
                params={
                    "csrf_token": csrf_token,
                    "text": test_text,
                    "version": "0",
                },
            )
            test_text_v2 = "test_v2"
            response = self.app.post(
                route_path(
                    "pullrequest_comment_edit",
                    repo_name=target_scm_name,
                    pull_request_id=pull_request.pull_request_id,
                    comment_id=comment_id,
                ),
                extra_environ=xhr_header,
                params={
                    "csrf_token": csrf_token,
                    "text": test_text_v2,
                    "version": "0",
                },
                status=409,
            )
            assert response.status_int == 409

            text_form_db = (
                ChangesetComment.query()
                .filter(ChangesetComment.comment_id == comment_id)
                .first()
                .text
            )

            assert test_text == text_form_db
            assert test_text_v2 != text_form_db

    def test_comment_and_comment_edit_permissions_forbidden(
        self,
        autologin_regular_user,
        user_regular,
        user_admin,
        pr_util,
        csrf_token,
        xhr_header,
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )
        comment = CommentsModel().create(
            text="test",
            repo=pull_request.target_repo.scm_instance().name,
            user=user_admin,
            pull_request=pull_request,
        )
        response = self.app.post(
            route_path(
                "pullrequest_comment_edit",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
                comment_id=comment.comment_id,
            ),
            extra_environ=xhr_header,
            params={
                "csrf_token": csrf_token,
                "text": "test_text",
            },
            status=403,
        )
        assert response.status_int == 403

    def test_create_pull_request(self, backend, csrf_token):
        commits = [
            {"message": "ancestor"},
            {"message": "change"},
            {"message": "change2"},
        ]
        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["ancestor"])
        source = backend.create_repo(heads=["change2"])

        response = self.app.post(
            route_path("pullrequest_create", repo_name=source.repo_name),
            [
                ("source_repo", source.repo_name),
                ("source_ref", "branch:default:" + commit_ids["change2"]),
                ("target_repo", target.repo_name),
                ("target_ref", "branch:default:" + commit_ids["ancestor"]),
                ("common_ancestor", commit_ids["ancestor"]),
                ("pullrequest_title", "Title"),
                ("pullrequest_desc", "Description"),
                ("description_renderer", "markdown"),
                ("__start__", "review_members:sequence"),
                ("__start__", "reviewer:mapping"),
                ("user_id", "1"),
                ("__start__", "reasons:sequence"),
                ("reason", "Some reason"),
                ("__end__", "reasons:sequence"),
                ("__start__", "rules:sequence"),
                ("__end__", "rules:sequence"),
                ("mandatory", "False"),
                ("__end__", "reviewer:mapping"),
                ("__end__", "review_members:sequence"),
                ("__start__", "revisions:sequence"),
                ("revisions", commit_ids["change"]),
                ("revisions", commit_ids["change2"]),
                ("__end__", "revisions:sequence"),
                ("user", ""),
                ("csrf_token", csrf_token),
            ],
            status=302,
        )

        location = response.headers["Location"]
        pull_request_id = location.rsplit("/", 1)[1]
        assert pull_request_id != "new"
        pull_request = PullRequest.get(int(pull_request_id))

        # check that we have now both revisions
        assert pull_request.revisions == [commit_ids["change2"], commit_ids["change"]]
        assert pull_request.source_ref == "branch:default:" + commit_ids["change2"]
        expected_target_ref = "branch:default:" + commit_ids["ancestor"]
        assert pull_request.target_ref == expected_target_ref

    def test_reviewer_notifications(self, backend, csrf_token):
        # We have to use the app.post for this test, so it will create the
        # notifications properly with the new PR
        commits = [
            {
                "message": "ancestor",
                "added": [FileNode(b"file_A", content=b"content_of_ancestor")],
            },
            {
                "message": "change",
                "added": [FileNode(b"file_a", content=b"content_of_change")],
            },
            {"message": "change-child"},
            {
                "message": "ancestor-child",
                "parents": ["ancestor"],
                "branch": "feature",
                "added": [FileNode(b"file_c", content=b"content_of_ancestor_child")],
            },
            {"message": "ancestor-child-2", "branch": "feature"},
        ]
        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["ancestor-child"])
        source = backend.create_repo(heads=["change"])

        response = self.app.post(
            route_path("pullrequest_create", repo_name=source.repo_name),
            [
                ("source_repo", source.repo_name),
                ("source_ref", "branch:default:" + commit_ids["change"]),
                ("target_repo", target.repo_name),
                ("target_ref", "branch:default:" + commit_ids["ancestor-child"]),
                ("common_ancestor", commit_ids["ancestor"]),
                ("pullrequest_title", "Title"),
                ("pullrequest_desc", "Description"),
                ("description_renderer", "markdown"),
                ("__start__", "review_members:sequence"),
                ("__start__", "reviewer:mapping"),
                ("user_id", "2"),
                ("__start__", "reasons:sequence"),
                ("reason", "Some reason"),
                ("__end__", "reasons:sequence"),
                ("__start__", "rules:sequence"),
                ("__end__", "rules:sequence"),
                ("mandatory", "False"),
                ("__end__", "reviewer:mapping"),
                ("__end__", "review_members:sequence"),
                ("__start__", "revisions:sequence"),
                ("revisions", commit_ids["change"]),
                ("__end__", "revisions:sequence"),
                ("user", ""),
                ("csrf_token", csrf_token),
            ],
            status=302,
        )

        location = response.headers["Location"]

        pull_request_id = location.rsplit("/", 1)[1]
        assert pull_request_id != "new"
        pull_request = PullRequest.get(int(pull_request_id))

        # Check that a notification was made
        notifications = Notification.query().filter(
            Notification.created_by == pull_request.author.user_id,
            Notification.type_ == Notification.TYPE_PULL_REQUEST,
            Notification.subject.contains(
                "requested a pull request review. !%s" % pull_request_id
            ),
        )
        assert len(notifications.all()) == 1

        # Change reviewers and check that a notification was made
        PullRequestModel().update_reviewers(
            pull_request.pull_request_id,
            [(1, [], False, "reviewer", [])],
            pull_request.author,
        )
        assert len(notifications.all()) == 2

    def test_create_pull_request_stores_ancestor_commit_id(self, backend, csrf_token):
        commits = [
            {
                "message": "ancestor",
                "added": [FileNode(b"file_A", content=b"content_of_ancestor")],
            },
            {
                "message": "change",
                "added": [FileNode(b"file_a", content=b"content_of_change")],
            },
            {
                "message": "change-child",
                "added": [FileNode(b"file_c", content=b"content_of_change_2")],
            },
            {
                "message": "ancestor-child",
                "parents": ["ancestor"],
                "branch": "feature",
                "added": [FileNode(b"file_B", content=b"content_of_ancestor_child")],
            },
            {"message": "ancestor-child-2", "branch": "feature"},
        ]
        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["ancestor-child"])
        source = backend.create_repo(heads=["change"])

        response = self.app.post(
            route_path("pullrequest_create", repo_name=source.repo_name),
            [
                ("source_repo", source.repo_name),
                ("source_ref", "branch:default:" + commit_ids["change"]),
                ("target_repo", target.repo_name),
                ("target_ref", "branch:default:" + commit_ids["ancestor-child"]),
                ("common_ancestor", commit_ids["ancestor"]),
                ("pullrequest_title", "Title"),
                ("pullrequest_desc", "Description"),
                ("description_renderer", "markdown"),
                ("__start__", "review_members:sequence"),
                ("__start__", "reviewer:mapping"),
                ("user_id", "1"),
                ("__start__", "reasons:sequence"),
                ("reason", "Some reason"),
                ("__end__", "reasons:sequence"),
                ("__start__", "rules:sequence"),
                ("__end__", "rules:sequence"),
                ("mandatory", "False"),
                ("__end__", "reviewer:mapping"),
                ("__end__", "review_members:sequence"),
                ("__start__", "revisions:sequence"),
                ("revisions", commit_ids["change"]),
                ("__end__", "revisions:sequence"),
                ("user", ""),
                ("csrf_token", csrf_token),
            ],
            status=302,
        )

        location = response.headers["Location"]

        pull_request_id = location.rsplit("/", 1)[1]
        assert pull_request_id != "new"
        pull_request = PullRequest.get(int(pull_request_id))

        # target_ref has to point to the ancestor's commit_id in order to
        # show the correct diff
        expected_target_ref = "branch:default:" + commit_ids["ancestor"]
        assert pull_request.target_ref == expected_target_ref

        # Check generated diff contents
        response = response.follow()
        response.mustcontain(no=["content_of_ancestor"])
        response.mustcontain(no=["content_of_ancestor-child"])
        response.mustcontain("content_of_change")

    def test_merge_pull_request_enabled(self, pr_util, csrf_token):
        # Clear any previous calls to rcextensions
        rhodecode.EXTENSIONS.calls.clear()

        pull_request = pr_util.create_pull_request(approved=True, mergeable=True)
        pull_request_id = pull_request.pull_request_id
        repo_name = (pull_request.target_repo.scm_instance().name,)

        url = route_path(
            "pullrequest_merge",
            repo_name=str(repo_name[0]),
            pull_request_id=pull_request_id,
        )
        response = self.app.post(url, params={"csrf_token": csrf_token}).follow()

        pull_request = PullRequest.get(pull_request_id)

        assert response.status_int == 200
        assert pull_request.is_closed()
        assert_pull_request_status(pull_request, ChangesetStatus.STATUS_APPROVED)

        # Check the relevant log entries were added
        user_logs = UserLog.query().order_by(UserLog.user_log_id.desc()).limit(3)
        actions = [log.action for log in user_logs]
        pr_commit_ids = PullRequestModel()._get_commit_ids(pull_request)
        expected_actions = [
            "repo.pull_request.close",
            "repo.pull_request.merge",
            "repo.pull_request.comment.create",
        ]
        assert actions == expected_actions

        user_logs = UserLog.query().order_by(UserLog.user_log_id.desc()).limit(4)
        actions = [log for log in user_logs]
        assert actions[-1].action == "user.push"
        assert actions[-1].action_data["commit_ids"] == pr_commit_ids

        # Check post_push rcextension was really executed
        push_calls = rhodecode.EXTENSIONS.calls["_push_hook"]
        assert len(push_calls) == 1
        unused_last_call_args, last_call_kwargs = push_calls[0]
        assert last_call_kwargs["action"] == "push"
        assert last_call_kwargs["commit_ids"] == pr_commit_ids

    def test_merge_pull_request_disabled(self, pr_util, csrf_token):
        pull_request = pr_util.create_pull_request(mergeable=False)
        pull_request_id = pull_request.pull_request_id
        pull_request = PullRequest.get(pull_request_id)

        response = self.app.post(
            route_path(
                "pullrequest_merge",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            ),
            params={"csrf_token": csrf_token},
        ).follow()

        assert response.status_int == 200
        response.mustcontain(
            "Merge is not currently possible because of below failed checks."
        )
        response.mustcontain("Server-side pull request merging is disabled.")

    @pytest.mark.skip_backends("svn")
    def test_merge_pull_request_not_approved(self, pr_util, csrf_token):
        pull_request = pr_util.create_pull_request(mergeable=True)
        pull_request_id = pull_request.pull_request_id
        repo_name = pull_request.target_repo.scm_instance().name

        response = self.app.post(
            route_path(
                "pullrequest_merge",
                repo_name=repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"csrf_token": csrf_token},
        ).follow()

        assert response.status_int == 200

        response.mustcontain(
            "Merge is not currently possible because of below failed checks."
        )
        response.mustcontain("Pull request reviewer approval is pending.")

    def test_merge_pull_request_renders_failure_reason(
        self, user_regular, csrf_token, pr_util
    ):
        pull_request = pr_util.create_pull_request(mergeable=True, approved=True)
        pull_request_id = pull_request.pull_request_id
        repo_name = pull_request.target_repo.scm_instance().name

        merge_resp = MergeResponse(
            True,
            False,
            Reference("commit", "STUB_COMMIT_ID", "STUB_COMMIT_ID"),
            MergeFailureReason.PUSH_FAILED,
            metadata={"target": "shadow repo", "merge_commit": "xxx"},
        )
        model_patcher = mock.patch.multiple(
            PullRequestModel,
            merge_repo=mock.Mock(return_value=merge_resp),
            merge_status=mock.Mock(return_value=(None, True, "WRONG_MESSAGE")),
        )

        with model_patcher:
            response = self.app.post(
                route_path(
                    "pullrequest_merge",
                    repo_name=repo_name,
                    pull_request_id=pull_request_id,
                ),
                params={"csrf_token": csrf_token},
                status=302,
            )

            merge_resp = MergeResponse(
                True,
                True,
                Reference("commit", "STUB_COMMIT_ID", "STUB_COMMIT_ID"),
                MergeFailureReason.PUSH_FAILED,
                metadata={"target": "shadow repo", "merge_commit": "xxx"},
            )
        assert_session_flash(response, merge_resp.merge_status_message)

    def test_update_source_revision(self, backend, csrf_token):
        commits = [
            {"message": "ancestor"},
            {"message": "change"},
            {"message": "change-2"},
        ]
        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["ancestor"])
        source = backend.create_repo(heads=["change"])

        # create pr from a in source to A in target
        pull_request = PullRequest()

        pull_request.source_repo = source
        pull_request.source_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["change"]
        )

        pull_request.target_repo = target
        pull_request.target_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["ancestor"]
        )

        pull_request.revisions = [commit_ids["change"]]
        pull_request.title = "Test"
        pull_request.description = "Description"
        pull_request.author = UserModel().get_by_username(TEST_USER_ADMIN_LOGIN)
        pull_request.pull_request_state = PullRequest.STATE_CREATED
        Session().add(pull_request)
        Session().commit()
        pull_request_id = pull_request.pull_request_id

        # source has ancestor - change - change-2
        backend.pull_heads(source, heads=["change-2"])
        target_repo_name = target.repo_name

        # update PR
        self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token},
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=target_repo_name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        assert response.status_int == 200
        response.mustcontain("Pull request updated to")
        response.mustcontain("with 1 added, 0 removed commits.")

        # check that we have now both revisions
        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.revisions == [commit_ids["change-2"], commit_ids["change"]]

    def test_update_target_revision(self, backend, csrf_token):
        """
        Checks when we add more commits into a target branch, and update PR
        """

        commits = [
            {"message": "commit-a"},  # main branch (our PR target)
            {"message": "commit-b"},  # Initial source
            {"message": "commit-c"},

            {"message": "commit-a-prime", "branch": "feature", "parents": ["commit-a"]},  # main branch (source)
        ]

        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["commit-a"])
        source = backend.create_repo(heads=["commit-b"])
        target_repo_name = target.repo_name

        # create pr from commit-b to commit-a
        pull_request = PullRequest()

        pull_request.target_repo = target
        pull_request.target_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["commit-a"]
        )

        pull_request.source_repo = source
        pull_request.source_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["commit-b"]
        )

        pull_request.revisions = [commit_ids["commit-b"]]
        pull_request.title = "Test"
        pull_request.description = "Description"
        pull_request.author = UserModel().get_by_username(TEST_USER_ADMIN_LOGIN)
        pull_request.pull_request_state = PullRequest.STATE_CREATED

        Session().add(pull_request)
        Session().commit()
        pull_request_id = pull_request.pull_request_id

        # target - add one commit on top commit-a -> commit-b
        backend.pull_heads(target, heads=["commit-b"])

        # source has ancestor - ancestor-new - change-rebased
        backend.pull_heads(source, heads=["commit-c"])

        # update PR
        url = route_path(
            "pullrequest_update",
            repo_name=target_repo_name,
            pull_request_id=pull_request_id,
        )
        self.app.post(
            url, params={"update_commits": "true", "csrf_token": csrf_token}, status=200
        )

        # check that we have now both revisions
        pull_request = PullRequest.get(pull_request_id)
        assert pull_request.revisions == [commit_ids["commit-c"]]
        assert pull_request.target_ref == "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["commit-b"]
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=target_repo_name,
                pull_request_id=pull_request.pull_request_id,
            )
        )
        assert response.status_int == 200
        response.mustcontain("Pull request updated to")
        response.mustcontain("with 1 added, 1 removed commits.")

    def test_update_target_revision_with_removal_of_1_commit_git(
        self, backend_git, csrf_token
    ):
        backend = backend_git
        commits = [
            {"message": "master-commit-1"},
            {"message": "master-commit-2-change-1"},
            {"message": "master-commit-3-change-2"},
            {
                "message": "feat-commit-1",
                "parents": ["master-commit-1"],
                "branch": "feature",
            },
            {"message": "feat-commit-2", "branch": "feature"},
        ]
        commit_ids = backend.create_master_repo(commits)
        target = backend.create_repo(heads=["master-commit-3-change-2"])
        source = backend.create_repo(heads=["feat-commit-2"])

        # create pr from a in source to A in target
        pull_request = PullRequest()
        pull_request.source_repo = source

        pull_request.source_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name,
            commit_id=commit_ids["master-commit-3-change-2"],
        )

        pull_request.target_repo = target
        pull_request.target_ref = "branch:{branch}:{commit_id}".format(
            branch=backend.default_branch_name, commit_id=commit_ids["feat-commit-2"]
        )

        pull_request.revisions = [
            commit_ids["feat-commit-1"],
            commit_ids["feat-commit-2"],
        ]
        pull_request.title = "Test"
        pull_request.description = "Description"
        pull_request.author = UserModel().get_by_username(TEST_USER_ADMIN_LOGIN)
        pull_request.pull_request_state = PullRequest.STATE_CREATED
        Session().add(pull_request)
        Session().commit()
        pull_request_id = pull_request.pull_request_id

        # PR is created, now we simulate a force-push into target,
        # that drops a 2 last commits
        vcsrepo = target.scm_instance()
        vcsrepo.config.clear_section("hooks")
        vcsrepo.run_git_command(["reset", "--soft", "HEAD~2"])
        target_repo_name = target.repo_name

        # update PR
        url = route_path(
            "pullrequest_update",
            repo_name=target_repo_name,
            pull_request_id=pull_request_id,
        )
        self.app.post(
            url, params={"update_commits": "true", "csrf_token": csrf_token}, status=200
        )

        response = self.app.get(
            route_path("pullrequest_new", repo_name=target_repo_name)
        )
        assert response.status_int == 200
        response.mustcontain("Pull request updated to")
        response.mustcontain("with 0 added, 0 removed commits.")

    def test_update_pr_ancestor_reference(self, csrf_token, pr_util: PRTestUtility):
        commits = [
            {"message": "ancestor"},
            {"message": "change"},
            {"message": "change-2"},

            {"message": "ancestor-new", "parents": ["ancestor"], "branch": "feature"},
            {"message": "change-rebased", "branch": "feature"},
        ]

        pull_request = pr_util.create_pull_request(
            commits,
            target_head="ancestor",
            source_head="change",
            revisions=["change"],
        )
        pull_request_id = pull_request.pull_request_id
        target_repo_name = pr_util.target_repository.repo_name
        commit_ids = pr_util.commit_ids

        assert pull_request.revisions == [commit_ids["change"]]
        assert list(pull_request.target_repo.scm_instance(cache=False).branches.keys()) == [pr_util.backend.default_branch_name]
        assert list(pull_request.source_repo.scm_instance(cache=False).branches.keys()) == [pr_util.backend.default_branch_name]

        branch = "feature"
        pr_util.update_target_repository(head="ancestor-new", do_fetch=True)
        pr_util.set_pr_target_ref(ref_type="branch", ref_name=branch, ref_commit_id=commit_ids["ancestor-new"])

        pr_util.update_source_repository(head="change-rebased", do_fetch=True)
        pr_util.set_pr_source_ref(ref_type="branch", ref_name=branch, ref_commit_id=commit_ids["change-rebased"])

        assert list(pull_request.target_repo.scm_instance(cache=False).branches.keys()) == [pr_util.backend.default_branch_name, branch]
        assert list(pull_request.source_repo.scm_instance(cache=False).branches.keys()) == [pr_util.backend.default_branch_name, branch]

        Session().add(pr_util.pull_request)
        Session().commit()

        self.app.post(
            route_path(
                "pullrequest_update",
                repo_name=target_repo_name,
                pull_request_id=pull_request_id,
            ),
            params={"update_commits": "true", "csrf_token": csrf_token, "force_refresh": True},
            status=200,
        )


        # response = self.app.get(
        #     route_path(
        #         "pullrequest_show", repo_name=target_repo_name, pull_request_id=pull_request_id,
        #         params={"force_refresh": True}
        #     ),
        # )
        #
        # response.mustcontain("Pull request updated to")
        # response.mustcontain("with 1 added, 0 removed commits.")

        pull_request = PullRequest.get(pull_request_id)

        assert pull_request.target_ref == "branch:{branch}:{commit_id}".format(
            branch="feature", commit_id=commit_ids["ancestor-new"])

        assert pull_request.revisions == [commit_ids["change-rebased"]]


    def test_remove_pull_request_branch(self, backend_git, csrf_token):
        branch_name = "development"
        commits = [
            {"message": "initial-commit"},
            {"message": "old-feature"},
            {"message": "new-feature", "branch": branch_name},
        ]
        repo = backend_git.create_repo(commits)
        repo_name = repo.repo_name
        commit_ids = backend_git.commit_ids

        pull_request = PullRequest()
        pull_request.source_repo = repo
        pull_request.target_repo = repo
        pull_request.source_ref = "branch:{branch}:{commit_id}".format(
            branch=branch_name, commit_id=commit_ids["new-feature"]
        )
        pull_request.target_ref = "branch:{branch}:{commit_id}".format(
            branch=backend_git.default_branch_name, commit_id=commit_ids["old-feature"]
        )
        pull_request.revisions = [commit_ids["new-feature"]]
        pull_request.title = "Test"
        pull_request.description = "Description"
        pull_request.author = UserModel().get_by_username(TEST_USER_ADMIN_LOGIN)
        pull_request.pull_request_state = PullRequest.STATE_CREATED
        Session().add(pull_request)
        Session().commit()

        pull_request_id = pull_request.pull_request_id

        vcs = repo.scm_instance()
        vcs.remove_ref("refs/heads/{}".format(branch_name))
        # NOTE(marcink): run GC to ensure the commits are gone
        vcs.run_gc()

        response = self.app.get(
            route_path(
                "pullrequest_show", repo_name=repo_name, pull_request_id=pull_request_id
            )
        )

        assert response.status_int == 200

        response.assert_response().element_contains(
            "#changeset_compare_view_content .alert strong", "Missing commits"
        )
        response.assert_response().element_contains(
            "#changeset_compare_view_content .alert",
            "This pull request cannot be displayed, because one or more"
            " commits no longer exist in the source repository.",
        )

    def test_strip_commits_from_pull_request(self, backend, pr_util):
        commits = [
            {"message": "initial-commit"},
            {"message": "old-feature"},
            {"message": "new-feature"},
        ]
        pull_request = pr_util.create_pull_request(
            commits,
            target_head="initial-commit",
            source_head="new-feature",
            revisions=["new-feature"],
        )

        vcs = pr_util.source_repository.scm_instance()
        if backend.alias == "git":
            vcs.strip(pr_util.commit_ids["new-feature"], branch_name=pr_util.backend.default_branch_name)
        else:
            vcs.strip(pr_util.commit_ids["new-feature"])

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pr_util.target_repository.repo_name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        assert response.status_int == 200

        response.assert_response().element_contains(
            "#changeset_compare_view_content .alert strong", "Missing commits"
        )
        response.assert_response().element_contains(
            "#changeset_compare_view_content .alert",
            "This pull request cannot be displayed, because one or more"
            " commits no longer exist in the source repository.",
        )
        response.assert_response().element_contains("#update_commits", "Update commits")

    def test_strip_commits_and_update(self, backend, pr_util, csrf_token):
        commits = [
            {"message": "initial-commit"},
            {"message": "old-feature"},
            {"message": "new-feature", "parents": ["old-feature"]},
        ]
        pull_request = pr_util.create_pull_request(
            commits,
            target_head="old-feature",
            source_head="new-feature",
            revisions=["new-feature"],
            mergeable=True,
        )
        pr_id = pull_request.pull_request_id
        target_repo_name = pull_request.target_repo.repo_name

        vcs = pr_util.source_repository.scm_instance()
        if backend.alias == "git":
            vcs.strip(pr_util.commit_ids["new-feature"], branch_name="master")
        else:
            vcs.strip(pr_util.commit_ids["new-feature"])

        url = route_path(
            "pullrequest_update", repo_name=target_repo_name, pull_request_id=pr_id
        )
        response = self.app.post(
            url, params={"update_commits": "true", "csrf_token": csrf_token}
        )

        assert response.status_int == 200
        assert json.loads(response.body) == json.loads(
            '{"response": true, "redirect_url": null}'
        )

        # Make sure that after update, it won't raise 500 errors
        response = self.app.get(
            route_path(
                "pullrequest_show", repo_name=target_repo_name, pull_request_id=pr_id
            )
        )

        assert response.status_int == 200
        response.assert_response().element_contains(
            "#changeset_compare_view_content .alert strong", "Missing commits"
        )

    def test_branch_is_a_link(self, pr_util):
        pull_request = pr_util.create_pull_request()
        pull_request.source_ref = "branch:origin:1234567890abcdef"
        pull_request.target_ref = "branch:target:abcdef1234567890"
        Session().add(pull_request)
        Session().commit()

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )
        assert response.status_int == 200

        source = response.assert_response().get_element(".pr-source-info")
        source_parent = source.getparent()
        assert len(source_parent) == 1

        target = response.assert_response().get_element(".pr-target-info")
        target_parent = target.getparent()
        assert len(target_parent) == 1

        expected_origin_link = route_path(
            "repo_commits",
            repo_name=pull_request.source_repo.scm_instance().name,
            params=dict(branch="origin"),
        )
        expected_target_link = route_path(
            "repo_commits",
            repo_name=pull_request.target_repo.scm_instance().name,
            params=dict(branch="target"),
        )
        assert source_parent.attrib["href"] == expected_origin_link
        assert target_parent.attrib["href"] == expected_target_link

    def test_bookmark_is_not_a_link(self, pr_util):
        pull_request = pr_util.create_pull_request()
        pull_request.source_ref = "bookmark:origin:1234567890abcdef"
        pull_request.target_ref = "bookmark:target:abcdef1234567890"
        Session().add(pull_request)
        Session().commit()

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )
        assert response.status_int == 200

        source = response.assert_response().get_element(".pr-source-info")
        assert source.text.strip() == "bookmark:origin"
        assert source.getparent().attrib.get("href") is None

        target = response.assert_response().get_element(".pr-target-info")
        assert target.text.strip() == "bookmark:target"
        assert target.getparent().attrib.get("href") is None

    def test_tag_is_not_a_link(self, pr_util):
        pull_request = pr_util.create_pull_request()
        pull_request.source_ref = "tag:origin:1234567890abcdef"
        pull_request.target_ref = "tag:target:abcdef1234567890"
        Session().add(pull_request)
        Session().commit()

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )
        assert response.status_int == 200

        source = response.assert_response().get_element(".pr-source-info")
        assert source.text.strip() == "tag:origin"
        assert source.getparent().attrib.get("href") is None

        target = response.assert_response().get_element(".pr-target-info")
        assert target.text.strip() == "tag:target"
        assert target.getparent().attrib.get("href") is None

    @pytest.mark.parametrize("mergeable", [True, False])
    def test_shadow_repository_link(self, mergeable, pr_util, http_host_only_stub):
        """
        Check that the pull request summary page displays a link to the shadow
        repository if the pull request is mergeable. If it is not mergeable
        the link should not be displayed.
        """
        pull_request = pr_util.create_pull_request(
            mergeable=mergeable, enable_notifications=False
        )
        target_repo = pull_request.target_repo.scm_instance()
        pr_id = pull_request.pull_request_id
        shadow_url = "{host}/{repo}/pull-request/{pr_id}/repository".format(
            host=http_host_only_stub, repo=target_repo.name, pr_id=pr_id
        )

        response = self.app.get(
            route_path(
                "pullrequest_show", repo_name=target_repo.name, pull_request_id=pr_id
            )
        )

        if mergeable:
            response.assert_response().element_value_contains(
                "input.pr-mergeinfo", shadow_url
            )
            response.assert_response().element_value_contains(
                "input.pr-mergeinfo ", "pr-merge"
            )
        else:
            response.assert_response().no_element_exists(".pr-mergeinfo")


@pytest.mark.usefixtures("app")
@pytest.mark.backends("git", "hg")
class TestPullrequestsControllerDelete(object):
    def test_pull_request_delete_button_permissions_admin(
        self, autologin_user, user_admin, pr_util
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        response.mustcontain('id="delete_pullrequest"')
        response.mustcontain("Confirm to delete this pull request")

    def test_pull_request_delete_button_permissions_owner(
        self, autologin_regular_user, user_regular, pr_util
    ):
        pull_request = pr_util.create_pull_request(
            author=user_regular.username, enable_notifications=False
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        response.mustcontain('id="delete_pullrequest"')
        response.mustcontain("Confirm to delete this pull request")

    def test_pull_request_delete_button_permissions_forbidden(
        self, autologin_regular_user, user_regular, user_admin, pr_util
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )
        response.mustcontain(no=['id="delete_pullrequest"'])
        response.mustcontain(no=["Confirm to delete this pull request"])

    def test_pull_request_delete_button_permissions_can_update_cannot_delete(
        self, autologin_regular_user, user_regular, user_admin, pr_util, user_util
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )

        user_util.grant_user_permission_to_repo(
            pull_request.target_repo, user_regular, "repository.write"
        )

        response = self.app.get(
            route_path(
                "pullrequest_show",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
            )
        )

        response.mustcontain('id="open_edit_pullrequest"')
        response.mustcontain('id="delete_pullrequest"')
        response.mustcontain(no=["Confirm to delete this pull request"])

    def test_delete_comment_returns_404_if_comment_does_not_exist(
        self, autologin_user, pr_util, user_admin, csrf_token, xhr_header
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )

        self.app.post(
            route_path(
                "pullrequest_comment_delete",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
                comment_id=1024404,
            ),
            extra_environ=xhr_header,
            params={"csrf_token": csrf_token},
            status=404,
        )

    def test_delete_comment(
        self, autologin_user, pr_util, user_admin, csrf_token, xhr_header
    ):
        pull_request = pr_util.create_pull_request(
            author=user_admin.username, enable_notifications=False
        )
        comment = pr_util.create_comment()
        comment_id = comment.comment_id

        response = self.app.post(
            route_path(
                "pullrequest_comment_delete",
                repo_name=pull_request.target_repo.scm_instance().name,
                pull_request_id=pull_request.pull_request_id,
                comment_id=comment_id,
            ),
            extra_environ=xhr_header,
            params={"csrf_token": csrf_token},
            status=200,
        )
        assert response.text == "true"

    @pytest.mark.parametrize(
        "url_type",
        [
            "pullrequest_new",
            "pullrequest_create",
            "pullrequest_update",
            "pullrequest_merge",
        ],
    )
    def test_pull_request_is_forbidden_on_archived_repo(
        self, autologin_user, backend, xhr_header, user_util, url_type
    ):
        # create a temporary repo
        source = user_util.create_repo(repo_type=backend.alias)
        repo_name = source.repo_name
        repo = Repository.get_by_repo_name(repo_name)
        repo.archived = True
        Session().commit()

        response = self.app.get(
            route_path(url_type, repo_name=repo_name, pull_request_id=1), status=302
        )

        msg = "Action not supported for archived repository."
        assert_session_flash(response, msg)


def assert_pull_request_status(pull_request, expected_status):
    status = ChangesetStatusModel().calculated_review_status(pull_request=pull_request)
    assert status == expected_status


@pytest.mark.parametrize("route", ["pullrequest_new", "pullrequest_create"])
@pytest.mark.usefixtures("autologin_user")
def test_forbidde_to_repo_summary_for_svn_repositories(backend_svn, app, route):
    app.get(route_path(route, repo_name=backend_svn.repo_name), status=404)