Restore fallback to deployment_platform_cluster

In 12.2 we will remove this fallback.

2 files changed, 16 insertions, 3 deletions

diff --git a/spec/controllers/projects/merge_requests_controller_spec.rb b/spec/controllers/projects/merge_requests_controller_spec.rb
index ea160a21955..2a6736018ea 100644
--- a/spec/controllers/projects/merge_requests_controller_spec.rb
+++ b/spec/controllers/projects/merge_requests_controller_spec.rb
@@ -887,9 +887,10 @@ describe Projects::MergeRequestsController do
         environment2 = create(:environment, project: forked)
         create(:deployment, :succeed, environment: environment2, sha: sha, ref: 'master', deployable: build)
 
-        # TODO address the last 5 queries
-        # See https://gitlab.com/gitlab-org/gitlab-ce/issues/63952
-        leeway = 5
+        # TODO address the last 11 queries
+        # See https://gitlab.com/gitlab-org/gitlab-ce/issues/63952 (5 queries)
+        # And https://gitlab.com/gitlab-org/gitlab-ce/issues/64105 (6 queries)
+        leeway = 11
         expect { get_ci_environments_status }.not_to exceed_all_query_limit(control_count + leeway)
       end
 
diff --git a/spec/models/deployment_metrics_spec.rb b/spec/models/deployment_metrics_spec.rb
index 7c574a8b6c8..0aadb1f3a5e 100644
--- a/spec/models/deployment_metrics_spec.rb
+++ b/spec/models/deployment_metrics_spec.rb
@@ -49,6 +49,18 @@ describe DeploymentMetrics do
 
         it { is_expected.to be_truthy }
       end
+
+      context 'fallback deployment platform' do
+        let(:cluster) { create(:cluster, :provided_by_user, environment_scope: '*', projects: [deployment.project]) }
+        let!(:prometheus) { create(:clusters_applications_prometheus, :installed, cluster: cluster) }
+
+        before do
+          expect(deployment.project).to receive(:deployment_platform).and_return(cluster.platform)
+          expect(cluster.application_prometheus).to receive(:can_query?).and_return(true)
+        end
+
+        it { is_expected.to be_truthy }
+      end
     end
   end