Expose parameters of merge request pipelines for MR widget

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add

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Simplify

Add some spec

remove unnecessary spec

Add spec

app/models/ci/pipeline.rb

@@ -206,10 +206,6 @@ module Ci
       triggered_by_merge_request(merge_request).for_source_sha(source_sha)
     end
 
-    scope :mergeable_merge_request_pipelines, -> (merge_request) do
-      triggered_by_merge_request(merge_request).where(target_sha: merge_request.target_branch_sha)
-    end
-
     scope :triggered_for_branch, -> (ref) do
       where(source: branch_pipeline_sources).where(ref: ref, tag: false)
     end
@@ -746,10 +742,6 @@ module Ci
       triggered_by_merge_request? && target_sha.present?
     end
 
-    def mergeable_merge_request_pipeline?
-      triggered_by_merge_request? && target_sha == merge_request.target_branch_sha
-    end
-
     def merge_request_ref?
       MergeRequest.merge_request_ref?(ref)
     end

app/serializers/merge_request_widget_entity.rb

@@ -22,6 +22,7 @@ class MergeRequestWidgetEntity < IssuableEntity
   end
   expose :squash
   expose :target_branch
+  expose :target_branch_sha
   expose :target_project_id
   expose :target_project_full_path do |merge_request|
     merge_request.project&.full_path

app/serializers/pipeline_entity.rb

@@ -59,6 +59,8 @@ class PipelineEntity < Grape::Entity
   end
 
   expose :commit, using: CommitEntity
+  expose :source_sha, if: -> (pipeline, _) { pipeline.merge_request_pipeline? }
+  expose :target_sha, if: -> (pipeline, _) { pipeline.merge_request_pipeline? }
   expose :yaml_errors, if: -> (pipeline, _) { pipeline.has_yaml_errors? }
 
   expose :failure_reason, if: -> (pipeline, _) { pipeline.failure_reason? } do |pipeline|

ee/app/models/ee/project.rb

@@ -531,6 +531,10 @@ module EE
       feature_available?(:protected_environments)
     end
 
+    def merge_pipelines_enabled?
+      feature_available?(:merge_pipelines) && super
+    end
+
     # Because we use default_value_for we need to be sure
     # packages_enabled= method does exist even if we rollback migration.
     # Otherwise many tests from spec/migrations will fail.

ee/app/serializers/ee/merge_request_widget_entity.rb

@@ -119,6 +119,10 @@ module EE
       expose :rebase_commit_sha
       expose :rebase_in_progress?, as: :rebase_in_progress
 
+      expose :merge_pipelines_enabled?, as: :merge_pipelines_enabled do |merge_request|
+        merge_request.target_project.merge_pipelines_enabled?
+      end
+
       expose :can_push_to_source_branch do |merge_request|
         presenter(merge_request).can_push_to_source_branch?
       end

ee/changelogs/unreleased/expose-mr-pipeline-parameters-for-merge-widget.yml

+---
+title: Expose merge request pipeline parameters for MR widget
+merge_request: 10502
+author:
+type: added

ee/spec/models/project_spec.rb

@@ -1735,6 +1735,45 @@ describe Project do
     end
   end
 
+  describe '#merge_pipelines_enabled?' do
+    subject { project.merge_pipelines_enabled? }
+
+    let(:project) { create(:project) }
+    let(:merge_pipelines_enabled) { true }
+
+    before do
+      project.merge_pipelines_enabled = merge_pipelines_enabled
+    end
+
+    context 'when Merge pipelines (EEP) is available' do
+      before do
+        stub_licensed_features(merge_pipelines: true)
+      end
+
+      it { is_expected.to be_truthy }
+
+      context 'when project setting is disabled' do
+        let(:merge_pipelines_enabled) { false }
+
+        it { is_expected.to be_falsy }
+      end
+    end
+
+    context 'when Merge pipelines (EEP) is unavailable' do
+      before do
+        stub_licensed_features(merge_pipelines: false)
+      end
+
+      it { is_expected.to be_falsy }
+
+      context 'when project setting is disabled' do
+        let(:merge_pipelines_enabled) { false }
+
+        it { is_expected.to be_falsy }
+      end
+    end
+  end
+
   describe "#insights_config" do
     context 'when project has no Insights config file' do
       it 'returns nil' do

spec/models/ci/pipeline_spec.rb

@@ -326,48 +326,6 @@ describe Ci::Pipeline, :mailer do
     end
   end
 
-  describe '.mergeable_merge_request_pipelines' do
-    subject { described_class.mergeable_merge_request_pipelines(merge_request) }
-
-    let!(:pipeline) do
-      create(:ci_pipeline, source: :merge_request_event, merge_request: merge_request, target_sha: target_sha)
-    end
-
-    let(:merge_request) { create(:merge_request) }
-    let(:target_sha) { merge_request.target_branch_sha }
-
-    it 'returns mergeable merge pipelines' do
-      is_expected.to eq([pipeline])
-    end
-
-    context 'when target sha does not point the head of the target branch' do
-      let(:target_sha) { merge_request.diff_head_sha }
-
-      it 'returns empty array' do
-        is_expected.to be_empty
-      end
-    end
-  end
-
-  describe '#mergeable_merge_request_pipeline?' do
-    subject { pipeline.mergeable_merge_request_pipeline? }
-
-    let!(:pipeline) do
-      create(:ci_pipeline, source: :merge_request_event, merge_request: merge_request, target_sha: target_sha)
-    end
-
-    let(:merge_request) { create(:merge_request) }
-    let(:target_sha) { merge_request.target_branch_sha }
-
-    it { is_expected.to be_truthy }
-
-    context 'when target sha does not point the head of the target branch' do
-      let(:target_sha) { merge_request.diff_head_sha }
-
-      it { is_expected.to be_falsy }
-    end
-  end
-
   describe '#merge_request_ref?' do
     subject { pipeline.merge_request_ref? }
 

spec/serializers/merge_request_widget_entity_spec.rb

@@ -13,6 +13,10 @@ describe MergeRequestWidgetEntity do
     described_class.new(resource, request: request).as_json
   end
 
+  it 'has the latest sha of the target branch' do
+    is_expected.to include(:target_branch_sha)
+  end
+
   describe 'source_project_full_path' do
     it 'includes the full path of the source project' do
       expect(subject[:source_project_full_path]).to be_present

spec/serializers/pipeline_entity_spec.rb

@@ -143,6 +143,11 @@ describe PipelineEntity do
         expect(subject[:flags][:detached_merge_request_pipeline]).to be_truthy
       end
 
+      it 'does not expose source sha and target sha' do
+        expect(subject[:source_sha]).to be_nil
+        expect(subject[:target_sha]).to be_nil
+      end
+
       context 'when user is a developer' do
         before do
           project.add_developer(user)
@@ -189,6 +194,11 @@ describe PipelineEntity do
       it 'makes atached flag true' do
         expect(subject[:flags][:merge_request_pipeline]).to be_truthy
       end
+
+      it 'exposes source sha and target sha' do
+        expect(subject[:source_sha]).to be_present
+        expect(subject[:target_sha]).to be_present
+      end
     end
   end
 end