# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd

"""Unittests for monorail.tracker.issuebulkedit."""
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import

import mock
import os
import unittest
import webapp2

from google.appengine.api import memcache
from google.appengine.ext import testbed

from framework import exceptions
from framework import permissions
from proto import tracker_pb2
from services import service_manager
from services import tracker_fulltext
from testing import fake
from testing import testing_helpers
from tracker import issuebulkedit
from tracker import tracker_bizobj
from tracker import tracker_constants


class Response(object):

  def __init__(self):
    self.status = None


class IssueBulkEditTest(unittest.TestCase):

  def setUp(self):
    self.services = service_manager.Services(
        features=fake.FeaturesService(),
        project=fake.ProjectService(),
        config=fake.ConfigService(),
        issue=fake.IssueService(),
        issue_star=fake.IssueStarService(),
        user=fake.UserService(),
        usergroup=fake.UserGroupService())
    self.servlet = issuebulkedit.IssueBulkEdit(
        'req', 'res', services=self.services)
    self.mr = testing_helpers.MakeMonorailRequest(
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET)
    self.project = self.services.project.TestAddProject(
        name='proj', project_id=789, owner_ids=[111])
    self.cnxn = 'fake connection'
    self.config = self.services.config.GetProjectConfig(
        self.cnxn, self.project.project_id)
    self.services.config.StoreConfig(self.cnxn, self.config)
    self.owner = self.services.user.TestAddUser('owner@example.com', 111)

    self.testbed = testbed.Testbed()
    self.testbed.activate()
    self.testbed.init_memcache_stub()
    self.testbed.init_datastore_v3_stub()

    self.mocked_methods = {}

  def tearDown(self):
    """Restore mocked objects of other modules."""
    self.testbed.deactivate()
    for obj, items in self.mocked_methods.items():
      for member, previous_value in items.items():
        setattr(obj, member, previous_value)

  def testAssertBasePermission(self):
    """Permit users with EDIT_ISSUE and ADD_ISSUE_COMMENT permissions."""
    mr = testing_helpers.MakeMonorailRequest(
        perms=permissions.CONTRIBUTOR_ACTIVE_PERMISSIONSET)
    self.assertRaises(permissions.PermissionException,
                      self.servlet.AssertBasePermission, mr)

    self.servlet.AssertBasePermission(self.mr)

  def testGatherPageData(self):
    """Test GPD works in a normal no-corner-cases case."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 0, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project)
    mr.local_id_list = [local_id_1]

    page_data = self.servlet.GatherPageData(mr)
    self.assertEqual(1, page_data['num_issues'])

  def testGatherPageData_CustomFieldEdition(self):
    """Test GPD works in a normal no-corner-cases case."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 0, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project, perms=permissions.PermissionSet([]))
    mr.local_id_list = [local_id_1]
    mr.auth.effective_ids = {222}

    fd_not_restricted = tracker_bizobj.MakeFieldDef(
        123,
        789,
        'CPU',
        tracker_pb2.FieldTypes.INT_TYPE,
        None,
        '',
        False,
        False,
        False,
        None,
        None,
        '',
        False,
        '',
        '',
        tracker_pb2.NotifyTriggers.NEVER,
        'no_action',
        'doc',
        False,
        is_restricted_field=False)
    self.config.field_defs.append(fd_not_restricted)

    fd_restricted = tracker_bizobj.MakeFieldDef(
        124,
        789,
        'CPU',
        tracker_pb2.FieldTypes.INT_TYPE,
        None,
        '',
        False,
        False,
        False,
        None,
        None,
        '',
        False,
        '',
        '',
        tracker_pb2.NotifyTriggers.NEVER,
        'no_action',
        'doc',
        False,
        is_restricted_field=True)
    self.config.field_defs.append(fd_restricted)

    page_data = self.servlet.GatherPageData(mr)
    self.assertTrue(page_data['fields'][0].is_editable)
    self.assertFalse(page_data['fields'][1].is_editable)

  def testGatherPageData_NoIssues(self):
    """Test GPD when no issues are specified in the mr."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project)
    self.assertRaises(exceptions.InputException,
                      self.servlet.GatherPageData, mr)

  def testGatherPageData_FilteredIssues(self):
    """Test GPD when all specified issues get filtered out."""
    created_issue_1 = fake.MakeTestIssue(
        789,
        1,
        'issue summary',
        'New',
        0,
        reporter_id=111,
        labels=['restrict-view-Googler'])
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project)
    mr.local_id_list = [local_id_1]

    self.assertRaises(webapp2.HTTPException,
                      self.servlet.GatherPageData, mr)

  def testGatherPageData_TypeLabels(self):
    """Test that GPD displays a custom field for appropriate issues."""
    created_issue_1 = fake.MakeTestIssue(
        789,
        1,
        'issue summary',
        'New',
        0,
        reporter_id=111,
        labels=['type-customlabels'])
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project)
    mr.local_id_list = [local_id_1]

    fd = tracker_bizobj.MakeFieldDef(
        123, 789, 'CPU', tracker_pb2.FieldTypes.INT_TYPE, None,
        '', False, False, False, None, None, '', False, '', '',
        tracker_pb2.NotifyTriggers.NEVER, 'no_action', 'doc', False)
    self.config.field_defs.append(fd)

    page_data = self.servlet.GatherPageData(mr)
    self.assertEqual(1, len(page_data['fields']))

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData(self, _create_task_mock):
    """Test that PFD works in a normal no-corner-cases case."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id

    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    post_data = fake.PostData(
        owner=['owner@example.com'], can=[1],
        q=[''], colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self._MockMethods()
    url = self.servlet.ProcessFormData(mr, post_data)
    self.assertTrue('list?can=1&q=&saved=1' in url)

  def testProcessFormData_NoIssues(self):
    """Test PFD when no issues are specified."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    post_data = fake.PostData()
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)
    # 400 == bad request
    self.assertEqual(400, self.servlet.response.status)

  def testProcessFormData_NoUser(self):
    """Test PFD when the user is not logged in."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project)
    mr.local_id_list = [99999]
    post_data = fake.PostData()
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)
    # 400 == bad request
    self.assertEqual(400, self.servlet.response.status)

  def testProcessFormData_CantComment(self):
    """Test PFD when the user can't comment on any of the issues."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.EMPTY_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [99999]
    post_data = fake.PostData()
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)
    # 400 == bad request
    self.assertEqual(400, self.servlet.response.status)

  def testProcessFormData_CantEdit(self):
    """Test PFD when the user can't edit any issue metadata."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.CONTRIBUTOR_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [99999]
    post_data = fake.PostData()
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)
    # 400 == bad request
    self.assertEqual(400, self.servlet.response.status)

  def testProcessFormData_CantMove(self):
    """Test PFD when the user can't move issues."""
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.COMMITTER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [99999]
    post_data = fake.PostData(move_to=['proj'])
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)
    # 400 == bad request
    self.assertEqual(400, self.servlet.response.status)

    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr.perms = permissions.OWNER_ACTIVE_PERMISSIONSET
    mr.local_id_list = [local_id_1]
    mr.project_name = 'proj'
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual(
        'The issues are already in project proj', mr.errors.move_to)

    post_data = fake.PostData(move_to=['notexist'])
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual('No such project: notexist', mr.errors.move_to)

  def _MockMethods(self):
    # Mock methods of other modules to avoid unnecessary testing
    self.mocked_methods[tracker_fulltext] = {
        'IndexIssues': tracker_fulltext.IndexIssues,
        'UnindexIssues': tracker_fulltext.UnindexIssues}
    def DoNothing(*_args, **_kwargs):
      pass
    self.servlet.PleaseCorrect = DoNothing
    tracker_fulltext.IndexIssues = DoNothing
    tracker_fulltext.UnindexIssues = DoNothing

  def GetFirstAmendment(self, project_id, local_id):
    issue = self.services.issue.GetIssueByLocalID(
        self.cnxn, project_id, local_id)
    issue_id = issue.issue_id
    comments = self.services.issue.GetCommentsForIssue(self.cnxn, issue_id)
    last_comment = comments[-1]
    first_amendment = last_comment.amendments[0]
    return first_amendment.field, first_amendment.newvalue

  def testProcessFormData_BadUserField(self):
    """Test PFD when a nonexistent user is added as a field value."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    fd = tracker_bizobj.MakeFieldDef(
        12345, 789, 'PM', tracker_pb2.FieldTypes.USER_TYPE, None,
        '', False, False, False, None, None, '', False, '', '',
        tracker_pb2.NotifyTriggers.NEVER, 'no_action', 'doc', False)
    self.config.field_defs.append(fd)

    post_data = fake.PostData(
        custom_12345=['ghost@gmail.com'], owner=['owner@example.com'], can=[1],
        q=[''], colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual('User not found.', mr.errors.custom_fields[0].message)

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_CustomFields(self, _create_task_mock):
    """Test PFD processes edits to custom fields."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    fd = tracker_bizobj.MakeFieldDef(
        12345, 789, 'CPU', tracker_pb2.FieldTypes.INT_TYPE, None,
        '', False, False, False, None, None, '', False, '', '',
        tracker_pb2.NotifyTriggers.NEVER, 'no_action', 'doc', False)
    self.config.field_defs.append(fd)

    post_data = fake.PostData(
        custom_12345=['10'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual(
        (tracker_pb2.FieldID.CUSTOM, '10'),
        self.GetFirstAmendment(789, local_id_1))

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_RestrictedCustomFieldsAccept(self, _create_task_mock):
    """We accept edits to restricted fields by editors (or admins)."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.PermissionSet(
            [
                permissions.EDIT_ISSUE, permissions.ADD_ISSUE_COMMENT,
                permissions.VIEW
            ]),
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    fd = tracker_bizobj.MakeFieldDef(
        12345,
        789,
        'CPU',
        tracker_pb2.FieldTypes.INT_TYPE,
        None,
        '',
        False,
        False,
        False,
        None,
        None,
        '',
        False,
        '',
        '',
        tracker_pb2.NotifyTriggers.NEVER,
        'no_action',
        'doc',
        False,
        is_restricted_field=True)
    fd.editor_ids = [111]
    self.config.field_defs.append(fd)

    post_data = fake.PostData(
        custom_12345=['10'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual(
        (tracker_pb2.FieldID.CUSTOM, '10'),
        self.GetFirstAmendment(789, local_id_1))

  def testProcessFormData_RestrictedCustomFieldsReject(self):
    """We reject edits to restricted fields by non-editors (and non-admins)."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.PermissionSet(
            [
                permissions.EDIT_ISSUE, permissions.ADD_ISSUE_COMMENT,
                permissions.VIEW
            ]),
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    fd_int = tracker_bizobj.MakeFieldDef(
        11111,
        789,
        'fd_int',
        tracker_pb2.FieldTypes.INT_TYPE,
        None,
        '',
        False,
        False,
        False,
        None,
        None,
        '',
        False,
        '',
        '',
        tracker_pb2.NotifyTriggers.NEVER,
        'no_action',
        'doc',
        False,
        is_restricted_field=True)
    fd_enum = tracker_bizobj.MakeFieldDef(
        44444,
        789,
        'fdEnum',
        tracker_pb2.FieldTypes.ENUM_TYPE,
        None,
        '',
        False,
        False,
        False,
        None,
        None,
        '',
        False,
        '',
        '',
        tracker_pb2.NotifyTriggers.NEVER,
        'no_action',
        'doc',
        False,
        is_restricted_field=True)
    fd_int.admin_ids = [222]
    fd_enum.editor_ids = [333]
    self.config.field_defs = [fd_int, fd_enum]

    post_data_add_fv = fake.PostData(
        custom_11111=['10'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    post_data_rm_fv = fake.PostData(
        op_custom_11111=['remove'],
        custom_11111=['10'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    post_data_clear_fd = fake.PostData(
        op_custom_11111=['clear'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    post_data_label_edits_enum = fake.PostData(
        label=['fdEnum-a'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])
    post_data_label_rm_enum = fake.PostData(
        label=['-fdEnum-b'],
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100])

    self._MockMethods()
    self.assertRaises(
        AssertionError, self.servlet.ProcessFormData, mr, post_data_add_fv)
    self.assertRaises(
        AssertionError, self.servlet.ProcessFormData, mr, post_data_rm_fv)
    self.assertRaises(
        AssertionError, self.servlet.ProcessFormData, mr, post_data_clear_fd)
    self.assertRaises(
        AssertionError, self.servlet.ProcessFormData, mr,
        post_data_label_edits_enum)
    self.assertRaises(
        AssertionError, self.servlet.ProcessFormData, mr,
        post_data_label_rm_enum)

  def testProcessFormData_DuplicateStatus_MergeSameIssue(self):
    """Test PFD processes null/cleared status values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id

    created_issue_2 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 112, reporter_id=112)
    self.services.issue.TestAddIssue(created_issue_2)
    merge_into_local_id_2 = created_issue_2.local_id

    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1, merge_into_local_id_2]
    mr.project_name = 'proj'

    # Add required project_name to merge_into_issue.
    merge_into_issue = self.services.issue.GetIssueByLocalID(
        mr.cnxn, self.project.project_id, merge_into_local_id_2)
    merge_into_issue.project_name = 'proj'

    post_data = fake.PostData(status=['Duplicate'],
        merge_into=[str(merge_into_local_id_2)], owner=['owner@example.com'],
        can=[1], q=[''], colspec=[''], sort=[''], groupby=[''], start=[0],
        num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual('Cannot merge issue into itself', mr.errors.merge_into_id)

  def testProcessFormData_DuplicateStatus_MergeMissingIssue(self):
    """Test PFD processes null/cleared status values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    created_issue_2 = fake.MakeTestIssue(
        789, 1, 'issue summary2', 'New', 112, reporter_id=112)
    self.services.issue.TestAddIssue(created_issue_2)
    local_id_2 = created_issue_2.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1, local_id_2]
    mr.project_name = 'proj'

    post_data = fake.PostData(status=['Duplicate'],
        merge_into=['non existant id'], owner=['owner@example.com'],
        can=[1], q=[''], colspec=[''], sort=[''], groupby=[''], start=[0],
        num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual('Please enter an issue ID', mr.errors.merge_into_id)

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_DuplicateStatus_Success(self, _create_task_mock):
    """Test PFD processes null/cleared status values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    created_issue_2 = fake.MakeTestIssue(
        789, 2, 'issue summary2', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_2)
    local_id_2 = created_issue_2.local_id
    created_issue_3 = fake.MakeTestIssue(
        789, 3, 'issue summary3', 'New', 112, reporter_id=112)
    self.services.issue.TestAddIssue(created_issue_3)
    merge_into_local_id_3 = created_issue_3.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1, local_id_2]
    mr.project_name = 'proj'

    post_data = fake.PostData(status=['Duplicate'],
        merge_into=[str(merge_into_local_id_3)], owner=['owner@example.com'],
        can=[1], q=[''], colspec=[''], sort=[''], groupby=[''], start=[0],
        num=[100])
    self._MockMethods()

    # Add project_name, CCs and starrers to the merge_into_issue.
    merge_into_issue = self.services.issue.GetIssueByLocalID(
        mr.cnxn, self.project.project_id, merge_into_local_id_3)
    merge_into_issue.project_name = 'proj'
    merge_into_issue.cc_ids = [113, 120]
    self.services.issue_star.SetStar(
        mr.cnxn, self.services, None, merge_into_issue.issue_id, 120, True)

    # Add project_name, CCs and starrers to the source issues.
    # Issue 1
    issue_1 = self.services.issue.GetIssueByLocalID(
        mr.cnxn, self.project.project_id, local_id_1)
    issue_1.project_name = 'proj'
    issue_1.cc_ids = [113, 114]
    self.services.issue_star.SetStar(
        mr.cnxn, self.services, None, issue_1.issue_id, 113, True)
    # Issue 2
    issue_2 = self.services.issue.GetIssueByLocalID(
        mr.cnxn, self.project.project_id, local_id_2)
    issue_2.project_name = 'proj'
    issue_2.cc_ids = [113, 115, 118]
    self.services.issue_star.SetStar(
        mr.cnxn, self.services, None, issue_2.issue_id, 114, True)
    self.services.issue_star.SetStar(
        mr.cnxn, self.services, None, issue_2.issue_id, 115, True)

    self.servlet.ProcessFormData(mr, post_data)

    # Verify both source issues were updated.
    self.assertEqual(
        (tracker_pb2.FieldID.STATUS, 'Duplicate'),
        self.GetFirstAmendment(self.project.project_id, local_id_1))
    self.assertEqual(
        (tracker_pb2.FieldID.STATUS, 'Duplicate'),
        self.GetFirstAmendment(self.project.project_id, local_id_2))

    # Verify that the merge into issue was updated with a comment.
    comments = self.services.issue.GetCommentsForIssue(
        self.cnxn, merge_into_issue.issue_id)
    self.assertEqual(
        'Issue 1 has been merged into this issue.\n'
        'Issue 2 has been merged into this issue.', comments[-1].content)

    # Verify CC lists and owner were merged to the merge_into issue.
    self.assertEqual(
            [113, 120, 114, 115, 118, 111], merge_into_issue.cc_ids)
    # Verify new starrers were added to the merge_into issue.
    self.assertEqual(4,
                      self.services.issue_star.CountItemStars(
                          self.cnxn, merge_into_issue.issue_id))
    self.assertEqual([120, 113, 114, 115],
                      self.services.issue_star.LookupItemStarrers(
                          self.cnxn, merge_into_issue.issue_id))

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_ClearStatus(self, _create_task_mock):
    """Test PFD processes null/cleared status values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    post_data = fake.PostData(
        op_statusenter=['clear'], owner=['owner@example.com'], can=[1],
        q=[''], colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertEqual(
        (tracker_pb2.FieldID.STATUS, ''), self.GetFirstAmendment(
            789, local_id_1))

  def testProcessFormData_InvalidOwner(self):
    """Test PFD rejects invalid owner emails."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 0, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]
    post_data = fake.PostData(
        owner=['invalid'])
    self.servlet.response = Response()
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertTrue(mr.errors.AnyErrors())

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_MoveTo(self, _create_task_mock):
    """Test PFD processes move_to values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    move_to_project = self.services.project.TestAddProject(
        name='proj2', project_id=790, owner_ids=[111])

    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.project_name = 'proj'
    mr.local_id_list = [local_id_1]

    self._MockMethods()
    post_data = fake.PostData(
        move_to=['proj2'], can=[1], q=[''],
        colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self.servlet.response = Response()
    self.servlet.ProcessFormData(mr, post_data)

    issue = self.services.issue.GetIssueByLocalID(
        self.cnxn, move_to_project.project_id, local_id_1)
    self.assertIsNotNone(issue)

  def testProcessFormData_InvalidBlockIssues(self):
    """Test PFD processes invalid blocked_on and blocking values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.project_name = 'proj'
    mr.local_id_list = [local_id_1]

    self._MockMethods()
    post_data = fake.PostData(
        op_blockedonenter=['append'], blocked_on=['12345'],
        op_blockingenter=['append'], blocking=['54321'],
        can=[1], q=[''],
        colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self.servlet.ProcessFormData(mr, post_data)

    self.assertEqual('Invalid issue ID 12345', mr.errors.blocked_on)
    self.assertEqual('Invalid issue ID 54321', mr.errors.blocking)

  def testProcessFormData_BlockIssuesOnItself(self):
    """Test PFD processes invalid blocked_on and blocking values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id
    created_issue_2 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_2)
    local_id_2 = created_issue_2.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.project_name = 'proj'
    mr.local_id_list = [local_id_1, local_id_2]

    self._MockMethods()
    post_data = fake.PostData(
        op_blockedonenter=['append'], blocked_on=[str(local_id_1)],
        op_blockingenter=['append'], blocking=[str(local_id_2)],
        can=[1], q=[''],
        colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self.servlet.ProcessFormData(mr, post_data)

    self.assertEqual('Cannot block an issue on itself.', mr.errors.blocked_on)
    self.assertEqual('Cannot block an issue on itself.', mr.errors.blocking)

  @mock.patch('framework.cloud_tasks_helpers.create_task')
  def testProcessFormData_NormalBlockIssues(self, _create_task_mock):
    """Test PFD processes blocked_on and blocking values."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id

    created_issueid = fake.MakeTestIssue(
        789, 2, 'blocking', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issueid)
    blocking_id = created_issueid.local_id

    created_issueid = fake.MakeTestIssue(
        789, 3, 'blocked on', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issueid)
    blocked_on_id = created_issueid.local_id
    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.project_name = 'proj'
    mr.local_id_list = [local_id_1]

    self._MockMethods()
    post_data = fake.PostData(
        op_blockedonenter=['append'], blocked_on=[str(blocked_on_id)],
        op_blockingenter=['append'], blocking=[str(blocking_id)],
        can=[1], q=[''],
        colspec=[''], sort=[''], groupby=[''], start=[0], num=[100])
    self.servlet.ProcessFormData(mr, post_data)

    self.assertIsNone(mr.errors.blocked_on)
    self.assertIsNone(mr.errors.blocking)

  def testProcessFormData_TooLongComment(self):
    """Test PFD rejects comments that are too long."""
    created_issue_1 = fake.MakeTestIssue(
        789, 1, 'issue summary', 'New', 111, reporter_id=111)
    self.services.issue.TestAddIssue(created_issue_1)
    local_id_1 = created_issue_1.local_id

    mr = testing_helpers.MakeMonorailRequest(
        project=self.project,
        perms=permissions.OWNER_ACTIVE_PERMISSIONSET,
        user_info={'user_id': 111})
    mr.local_id_list = [local_id_1]

    post_data = fake.PostData(
        owner=['owner@example.com'],
        can=[1],
        q=[''],
        colspec=[''],
        sort=[''],
        groupby=[''],
        start=[0],
        num=[100],
        comment=['   ' + 'c' * tracker_constants.MAX_COMMENT_CHARS + '  '])
    self._MockMethods()
    self.servlet.ProcessFormData(mr, post_data)
    self.assertTrue(mr.errors.AnyErrors())
    self.assertEqual('Comment is too long.', mr.errors.comment)