Add E2E for working with forks in Web IDE

Covers first two scenarios in
https://gitlab.com/gitlab-org/quality/testcases/-/issues/923

app/assets/javascripts/ide/components/ide_project_header.vue

@@ -20,7 +20,11 @@ export default {
       <project-avatar-default :project="project" :size="48" />
       <span class="ide-sidebar-project-title">
         <span class="sidebar-context-title"> {{ project.name }} </span>
-        <span class="sidebar-context-title text-secondary">
+        <span
+          class="sidebar-context-title text-secondary"
+          data-qa-selector="project_path_content"
+          :data-qa-project-path="project.path_with_namespace"
+        >
           {{ project.path_with_namespace }}
         </span>
       </span>

app/views/shared/_confirm_fork_modal.html.haml

-#modal-confirm-fork.modal.qa-confirm-fork-modal
+#modal-confirm-fork.modal{ data: { qa_selector: 'confirm_fork_modal' } }
   .modal-dialog
     .modal-content
       .modal-header
@@ -9,4 +9,4 @@
         %p= _("You're not allowed to %{tag_start}edit%{tag_end} files in this project directly. Please fork this project, make your changes there, and submit a merge request.") % { tag_start: '', tag_end: ''}
       .modal-footer
         = link_to _('Cancel'), '#', class: "btn btn-cancel", "data-dismiss" => "modal"
-        = link_to _('Fork project'), fork_path, class: 'btn btn-success', method: :post
+        = link_to _('Fork project'), fork_path, class: 'btn btn-success', data: { qa_selector: 'fork_project_button' }, method: :post

qa/qa/page/merge_request/new.rb

@@ -5,7 +5,7 @@ module QA
     module MergeRequest
       class New < Page::Issuable::New
         view 'app/views/shared/issuable/_form.html.haml' do
-          element :issuable_create_button
+          element :issuable_create_button, required: true
         end
 
         def create_merge_request

qa/qa/page/project/show.rb

@@ -143,6 +143,10 @@ module QA
           click_element :web_ide_button
         end
 
+        def has_edit_fork_button?
+          has_element?(:web_ide_button, text: 'Edit fork in Web IDE')
+        end
+
         def project_name
           find_element(:project_name_content).text
         end

qa/qa/page/project/web_ide/edit.rb

@@ -59,12 +59,25 @@ module QA
             element :rename_move_button
           end
 
+          view 'app/views/shared/_confirm_fork_modal.html.haml' do
+            element :fork_project_button
+            element :confirm_fork_modal
+          end
+
+          view 'app/assets/javascripts/ide/components/ide_project_header.vue' do
+            element :project_path_content
+          end
+
           def has_file?(file_name)
             within_element(:file_list) do
               page.has_content? file_name
             end
           end
 
+          def has_project_path?(project_path)
+            has_element?(:project_path_content, project_path: project_path)
+          end
+
           def create_new_file_from_template(file_name, template)
             click_element(:new_file, Page::Component::WebIDE::Modal::CreateNewFile)
 
@@ -91,7 +104,7 @@ module QA
             end
           end
 
-          def commit_changes
+          def commit_changes(open_merge_request: false)
             # Clicking :begin_commit_button switches from the
             # edit to the commit view
             click_element :begin_commit_button
@@ -107,6 +120,9 @@ module QA
                 has_element?(:commit_button)
             end
 
+            if open_merge_request
+              click_element(:commit_button, Page::MergeRequest::New)
+            else
               # Click :commit_button and keep retrying just in case part of the
               # animation is still in process even when the buttons have the
               # expected visibility.
@@ -121,6 +137,7 @@ module QA
 
               raise "The changes do not appear to have been committed successfully." unless commit_success_msg_shown
             end
+          end
 
           def add_to_modified_content(content)
             finished_loading?
@@ -141,6 +158,16 @@ module QA
             click_button('Create file')
           end
 
+          def add_file(file_name, file_text)
+            click_element(:new_file, Page::Component::WebIDE::Modal::CreateNewFile)
+            fill_element(:file_name_field, file_name)
+            click_button('Create file')
+            wait_until(reload: false) { has_file?(file_name) }
+            within_element(:editor_container) do
+              find('textarea.inputarea').click.set(file_text)
+            end
+          end
+
           def rename_file(file_name, new_file_name)
             click_element(:file_name_content, text: file_name)
             click_element(:dropdown_button)
@@ -148,6 +175,17 @@ module QA
             fill_element(:file_name_field, new_file_name)
             click_button('Rename file')
           end
+
+          def fork_project!
+            wait_until(reload: false) do
+              has_element?(:confirm_fork_modal)
+            end
+            click_element(:fork_project_button)
+            # wait for the fork to be created
+            wait_until(reload: true) do
+              has_element?(:file_list)
+            end
+          end
         end
       end
     end

qa/qa/specs/features/browser_ui/3_create/web_ide/open_fork_in_web_ide_spec.rb

+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create' do
+    describe 'Open a fork in Web IDE' do
+      let(:parent_project) do
+        Resource::Project.fabricate_via_api! do |project|
+          project.name = 'parent-project'
+          project.initialize_with_readme = true
+        end
+      end
+
+      context 'when a user does not have permissions to commit to the project' do
+        let(:user) { Resource::User.fabricate_or_use(Runtime::Env.gitlab_qa_username_1, Runtime::Env.gitlab_qa_password_1) }
+
+        context 'when no fork is present' do
+          it 'suggests to create a fork when a user clicks Web IDE in the main project' do
+            Flow::Login.sign_in(as: user)
+
+            parent_project.visit!
+            Page::Project::Show.perform(&:open_web_ide!)
+
+            Page::Project::WebIDE::Edit.perform(&:fork_project!)
+
+            submit_merge_request_upstream
+          end
+        end
+
+        context 'when a fork is already created' do
+          let(:fork_project) do
+            Resource::Fork.fabricate_via_api! do |fork|
+              fork.user = user
+              fork.upstream = parent_project
+            end
+          end
+
+          it 'opens the fork when a user clicks Web IDE in the main project' do
+            Flow::Login.sign_in(as: user)
+            fork_project.upstream.visit!
+            Page::Project::Show.perform do |project_page|
+              expect(project_page).to have_edit_fork_button
+
+              project_page.open_web_ide!
+            end
+
+            submit_merge_request_upstream
+          end
+        end
+
+        def submit_merge_request_upstream
+          Page::Project::WebIDE::Edit.perform do |ide|
+            expect(ide).to have_project_path("#{user.username}/#{parent_project.name}")
+
+            ide.add_file('new file', 'some random text')
+            ide.commit_changes(open_merge_request: true)
+          end
+
+          Page::MergeRequest::New.perform(&:create_merge_request)
+
+          parent_project.visit!
+          Page::Project::Menu.perform(&:click_merge_requests)
+          expect(page).to have_content('Update new file')
+        end
+      end
+    end
+  end
+end