Merge branch '20150-retry-button-on-build-page-displays-for-users-who-can-t-use-it' into 'master'

Ensure current user can retry a build before showing the 'Retry' button

## What does this MR do?

Fixes #20150.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5476
Signed-off-by: Rémy Coutable <remy@rymai.me>

CHANGELOG

@@ -9,6 +9,7 @@ v 8.10.2 (unreleased)
   - Add iid to MR API response. !5468
   - Disable MySQL foreign key checks before dropping all tables. !5472
   - Ensure relative paths for video are rewritten as we do for images. !5474
+  - Ensure current user can retry a build before showing the 'Retry' button. !5476
   - Don't show comment button in gutter of diffs on MR discussion tab
 
 v 8.10.1

app/views/projects/builds/_sidebar.html.haml

@@ -40,7 +40,7 @@
   .block{ class: ("block-first" if !@build.coverage && !(can?(current_user, :read_build, @project) && (@build.artifacts? || @build.artifacts_expired?))) }
     .title
       Build details
-      - if @build.retryable?
+      - if can?(current_user, :update_build, @build) && @build.retryable?
         = link_to "Retry", retry_namespace_project_build_path(@project.namespace, @project, @build), class: 'pull-right', method: :post
     - if @build.merge_request
       %p.build-detail-row

spec/features/builds_spec.rb

@@ -199,9 +199,13 @@ describe "Builds" do
         click_link 'Retry'
       end
 
-      it { expect(page.status_code).to eq(200) }
-      it { expect(page).to have_content 'pending' }
-      it { expect(page).to have_content 'Cancel' }
+      it 'shows the right status and buttons' do
+        expect(page).to have_http_status(200)
+        expect(page).to have_content 'pending'
+        page.within('aside.right-sidebar') do
+          expect(page).to have_content 'Cancel'
+        end
+      end
     end
 
     context "Build from other project" do
@@ -212,7 +216,25 @@ describe "Builds" do
         page.driver.post(retry_namespace_project_build_path(@project.namespace, @project, @build2))
       end
 
-      it { expect(page.status_code).to eq(404) }
+      it { expect(page).to have_http_status(404) }
+    end
+
+    context "Build that current user is not allowed to retry" do
+      before do
+        @build.run!
+        @build.cancel!
+        @project.update(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
+
+        logout_direct
+        login_with(create(:user))
+        visit namespace_project_build_path(@project.namespace, @project, @build)
+      end
+
+      it 'does not show the Retry button' do
+        page.within('aside.right-sidebar') do
+          expect(page).not_to have_content 'Retry'
+        end
+      end
     end
   end