post merge pipeline and environments status

10 files changed, 417 insertions, 84 deletions

diff --git a/spec/controllers/projects/merge_requests_controller_spec.rb b/spec/controllers/projects/merge_requests_controller_spec.rb
index dcfd6c05200..7b0459e0325 100644
--- a/spec/controllers/projects/merge_requests_controller_spec.rb
+++ b/spec/controllers/projects/merge_requests_controller_spec.rb
@@ -749,13 +749,15 @@ describe Projects::MergeRequestsController do
 
   describe 'GET ci_environments_status' do
     context 'the environment is from a forked project' do
-      let!(:forked)      { fork_project(project, user, repository: true) }
-      let!(:environment) { create(:environment, project: forked) }
-      let!(:deployment)  { create(:deployment, environment: environment, sha: forked.commit.id, ref: 'master') }
-      let(:admin)        { create(:admin) }
+      let(:forked)      { fork_project(project, user, repository: true) }
+      let(:sha)         { forked.commit.sha }
+      let(:environment) { create(:environment, project: forked) }
+      let(:pipeline)    { create(:ci_pipeline, sha: sha, project: forked) }
+      let(:build)       { create(:ci_build, pipeline: pipeline) }
+      let!(:deployment) { create(:deployment, environment: environment, sha: sha, ref: 'master', deployable: build) }
 
       let(:merge_request) do
-        create(:merge_request, source_project: forked, target_project: project)
+        create(:merge_request, source_project: forked, target_project: project, target_branch: 'master', head_pipeline: pipeline)
       end
 
       it 'links to the environment on that project' do
@@ -764,6 +766,35 @@ describe Projects::MergeRequestsController do
         expect(json_response.first['url']).to match /#{forked.full_path}/
       end
 
+      context "when environment_target is 'merge_commit'" do
+        it 'returns nothing' do
+          get_ci_environments_status(environment_target: 'merge_commit')
+
+          expect(response).to have_gitlab_http_status(:ok)
+          expect(json_response).to be_empty
+        end
+
+        context 'when is merged' do
+          let(:source_environment)  { create(:environment, project: project) }
+          let(:merge_commit_sha)    { project.repository.merge(user, forked.commit.id, merge_request, "merged in test") }
+          let(:post_merge_pipeline) { create(:ci_pipeline, sha: merge_commit_sha, project: project) }
+          let(:post_merge_build)    { create(:ci_build, pipeline: post_merge_pipeline) }
+          let!(:source_deployment)  { create(:deployment, environment: source_environment, sha: merge_commit_sha, ref: 'master', deployable: post_merge_build) }
+
+          before do
+            merge_request.update!(merge_commit_sha: merge_commit_sha)
+            merge_request.mark_as_merged!
+          end
+
+          it 'returns the enviroment on the source project' do
+            get_ci_environments_status(environment_target: 'merge_commit')
+
+            expect(response).to have_gitlab_http_status(:ok)
+            expect(json_response.first['url']).to match /#{project.full_path}/
+          end
+        end
+      end
+
       # we're trying to reduce the overall number of queries for this method.
       # set a hard limit for now. https://gitlab.com/gitlab-org/gitlab-ce/issues/52287
       it 'keeps queries in check' do
@@ -772,11 +803,15 @@ describe Projects::MergeRequestsController do
         expect(control_count).to be <= 137
       end
 
-      def get_ci_environments_status
-        get :ci_environments_status,
+      def get_ci_environments_status(extra_params = {})
+        params = {
           namespace_id: merge_request.project.namespace.to_param,
           project_id: merge_request.project,
-          id: merge_request.iid, format: 'json'
+          id: merge_request.iid,
+          format: 'json'
+        }
+
+        get :ci_environments_status, params.merge(extra_params)
       end
     end
   end
diff --git a/spec/features/merge_request/user_sees_deployment_widget_spec.rb b/spec/features/merge_request/user_sees_deployment_widget_spec.rb
index f744d7941f5..a298ead43db 100644
--- a/spec/features/merge_request/user_sees_deployment_widget_spec.rb
+++ b/spec/features/merge_request/user_sees_deployment_widget_spec.rb
@@ -3,15 +3,19 @@ require 'rails_helper'
 describe 'Merge request > User sees deployment widget', :js do
   describe 'when deployed to an environment' do
     let(:user) { create(:user) }
-    let(:project) { merge_request.target_project }
-    let(:merge_request) { create(:merge_request, :merged) }
+    let(:project) { create(:project, :repository) }
+    let(:merge_request) { create(:merge_request, :merged, source_project: project) }
     let(:environment) { create(:environment, project: project) }
     let(:role) { :developer }
-    let(:sha) { project.commit('master').id }
-    let!(:deployment) { create(:deployment, environment: environment, sha: sha) }
+    let(:ref) { merge_request.target_branch }
+    let(:sha) { project.commit(ref).id }
+    let(:pipeline) { create(:ci_pipeline_without_jobs, sha: sha, project: project, ref: ref) }
+    let(:build)    { create(:ci_build, :success, pipeline: pipeline) }
+    let!(:deployment) { create(:deployment, environment: environment, sha: sha, ref: ref, deployable: build) }
     let!(:manual) { }
 
     before do
+      merge_request.update!(merge_commit_sha: sha)
       project.add_user(user, role)
       sign_in(user)
       visit project_merge_request_path(project, merge_request)
@@ -26,15 +30,10 @@ describe 'Merge request > User sees deployment widget', :js do
     end
 
     context 'with stop action' do
-      let(:pipeline) { create(:ci_pipeline, project: project) }
-      let(:build) { create(:ci_build, pipeline: pipeline) }
       let(:manual) { create(:ci_build, :manual, pipeline: pipeline, name: 'close_app') }
-      let(:deployment) do
-        create(:deployment, environment: environment, ref: merge_request.target_branch,
-                            sha: sha, deployable: build, on_stop: 'close_app')
-      end
 
       before do
+        deployment.update!(on_stop: manual.name)
         wait_for_requests
       end
 
diff --git a/spec/features/merge_request/user_sees_merge_widget_spec.rb b/spec/features/merge_request/user_sees_merge_widget_spec.rb
index f15129759de..4e5699f9571 100644
--- a/spec/features/merge_request/user_sees_merge_widget_spec.rb
+++ b/spec/features/merge_request/user_sees_merge_widget_spec.rb
@@ -40,21 +40,26 @@ describe 'Merge request > User sees merge widget', :js do
 
   context 'view merge request' do
     let!(:environment) { create(:environment, project: project) }
+    let(:sha)          { project.commit(merge_request.source_branch).sha }
+    let(:pipeline)     { create(:ci_pipeline_without_jobs, status: 'success', sha: sha, project: project, ref: merge_request.source_branch) }
+    let(:build)        { create(:ci_build, :success, pipeline: pipeline) }
 
     let!(:deployment) do
       create(:deployment, environment: environment,
-                          ref: 'feature',
-                          sha: merge_request.diff_head_sha)
+                          ref: merge_request.source_branch,
+                          deployable: build,
+                          sha: sha)
     end
 
     before do
+      merge_request.update!(head_pipeline: pipeline)
       visit project_merge_request_path(project, merge_request)
     end
 
     it 'shows environments link' do
       wait_for_requests
 
-      page.within('.mr-widget-heading') do
+      page.within('.js-pre-merge-deploy') do
         expect(page).to have_content("Deployed to #{environment.name}")
         expect(find('.js-deploy-url')[:href]).to include(environment.formatted_external_url)
       end
diff --git a/spec/fixtures/api/schemas/entities/merge_request_widget.json b/spec/fixtures/api/schemas/entities/merge_request_widget.json
index c40977bc4ee..35971d564d5 100644
--- a/spec/fixtures/api/schemas/entities/merge_request_widget.json
+++ b/spec/fixtures/api/schemas/entities/merge_request_widget.json
@@ -46,6 +46,7 @@
     "diff_head_commit_short_id": { "type": ["string", "null"] },
     "merge_commit_message": { "type": ["string", "null"] },
     "pipeline": { "type": ["object", "null"] },
+    "merge_pipeline": { "type": ["object", "null"] },
     "work_in_progress": { "type": "boolean" },
     "source_branch_exists": { "type": "boolean" },
     "mergeable_discussions_state": { "type": "boolean" },
diff --git a/spec/javascripts/vue_mr_widget/components/deployment_spec.js b/spec/javascripts/vue_mr_widget/components/deployment_spec.js
index ce850bc621e..d26ffa4b4a6 100644
--- a/spec/javascripts/vue_mr_widget/components/deployment_spec.js
+++ b/spec/javascripts/vue_mr_widget/components/deployment_spec.js
@@ -2,54 +2,48 @@ import Vue from 'vue';
 import deploymentComponent from '~/vue_merge_request_widget/components/deployment.vue';
 import MRWidgetService from '~/vue_merge_request_widget/services/mr_widget_service';
 import { getTimeago } from '~/lib/utils/datetime_utility';
+import mountComponent from '../../helpers/vue_mount_component_helper';
 
-const deploymentMockData = {
-  id: 15,
-  name: 'review/diplo',
-  url: '/root/acets-review-apps/environments/15',
-  stop_url: '/root/acets-review-apps/environments/15/stop',
-  metrics_url: '/root/acets-review-apps/environments/15/deployments/1/metrics',
-  metrics_monitoring_url: '/root/acets-review-apps/environments/15/metrics',
-  external_url: 'http://diplo.',
-  external_url_formatted: 'diplo.',
-  deployed_at: '2017-03-22T22:44:42.258Z',
-  deployed_at_formatted: 'Mar 22, 2017 10:44pm',
-  changes: [
-    {
-      path: 'index.html',
-      external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/index.html',
-    },
-    {
-      path: 'imgs/gallery.html',
-      external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/imgs/gallery.html',
-    },
-    {
-      path: 'about/',
-      external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/about/',
-    },
-  ],
-};
-const createComponent = () => {
+describe('Deployment component', () => {
   const Component = Vue.extend(deploymentComponent);
+  const deploymentMockData = {
+    id: 15,
+    name: 'review/diplo',
+    url: '/root/review-apps/environments/15',
+    stop_url: '/root/review-apps/environments/15/stop',
+    metrics_url: '/root/review-apps/environments/15/deployments/1/metrics',
+    metrics_monitoring_url: '/root/review-apps/environments/15/metrics',
+    external_url: 'http://gitlab.com.',
+    external_url_formatted: 'gitlab',
+    deployed_at: '2017-03-22T22:44:42.258Z',
+    deployed_at_formatted: 'Mar 22, 2017 10:44pm',
+    changes: [
+      {
+        path: 'index.html',
+        external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/index.html',
+      },
+      {
+        path: 'imgs/gallery.html',
+        external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/imgs/gallery.html',
+      },
+      {
+        path: 'about/',
+        external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/about/',
+      },
+    ],
+  };
 
-  return new Component({
-    el: document.createElement('div'),
-    propsData: { deployment: { ...deploymentMockData } },
-  });
-};
-
-describe('Deployment component', () => {
   let vm;
 
-  beforeEach(() => {
-    vm = createComponent();
-  });
-
   afterEach(() => {
     vm.$destroy();
   });
 
-  describe('computed', () => {
+  describe('', () => {
+    beforeEach(() => {
+      vm = mountComponent(Component, { deployment: { ...deploymentMockData } });
+    });
+
     describe('deployTimeago', () => {
       it('return formatted date', () => {
         const readable = getTimeago().format(deploymentMockData.deployed_at);
@@ -111,9 +105,7 @@ describe('Deployment component', () => {
         expect(vm.hasDeploymentMeta).toEqual(false);
       });
     });
-  });
 
-  describe('methods', () => {
     describe('stopEnvironment', () => {
       const url = '/foo/bar';
       const returnPromise = () =>
@@ -152,42 +144,33 @@ describe('Deployment component', () => {
         expect(MRWidgetService.stopEnvironment).not.toHaveBeenCalled();
       });
     });
-  });
-
-  describe('template', () => {
-    let el;
-
-    beforeEach(() => {
-      vm = createComponent(deploymentMockData);
-      el = vm.$el;
-    });
 
     it('renders deployment name', () => {
-      expect(el.querySelector('.js-deploy-meta').getAttribute('href')).toEqual(
+      expect(vm.$el.querySelector('.js-deploy-meta').getAttribute('href')).toEqual(
         deploymentMockData.url,
       );
 
-      expect(el.querySelector('.js-deploy-meta').innerText).toContain(deploymentMockData.name);
+      expect(vm.$el.querySelector('.js-deploy-meta').innerText).toContain(deploymentMockData.name);
     });
 
     it('renders external URL', () => {
-      expect(el.querySelector('.js-deploy-url').getAttribute('href')).toEqual(
+      expect(vm.$el.querySelector('.js-deploy-url').getAttribute('href')).toEqual(
         deploymentMockData.external_url,
       );
 
-      expect(el.querySelector('.js-deploy-url').innerText).toContain('View app');
+      expect(vm.$el.querySelector('.js-deploy-url').innerText).toContain('View app');
     });
 
     it('renders stop button', () => {
-      expect(el.querySelector('.btn')).not.toBeNull();
+      expect(vm.$el.querySelector('.btn')).not.toBeNull();
     });
 
     it('renders deployment time', () => {
-      expect(el.querySelector('.js-deploy-time').innerText).toContain(vm.deployTimeago);
+      expect(vm.$el.querySelector('.js-deploy-time').innerText).toContain(vm.deployTimeago);
     });
 
     it('renders metrics component', () => {
-      expect(el.querySelector('.js-mr-memory-usage')).not.toBeNull();
+      expect(vm.$el.querySelector('.js-mr-memory-usage')).not.toBeNull();
     });
   });
 
@@ -196,8 +179,7 @@ describe('Deployment component', () => {
       window.gon = window.gon || {};
       window.gon.features = window.gon.features || {};
       window.gon.features.ciEnvironmentsStatusChanges = true;
-
-      vm = createComponent(deploymentMockData);
+      vm = mountComponent(Component, { deployment: { ...deploymentMockData } });
     });
 
     afterEach(() => {
@@ -216,7 +198,7 @@ describe('Deployment component', () => {
       window.gon.features = window.gon.features || {};
       window.gon.features.ciEnvironmentsStatusChanges = false;
 
-      vm = createComponent(deploymentMockData);
+      vm = mountComponent(Component, { deployment: { ...deploymentMockData } });
     });
 
     afterEach(() => {
@@ -228,4 +210,44 @@ describe('Deployment component', () => {
       expect(vm.$el.querySelector('.js-deploy-url-feature-flag')).not.toBeNull();
     });
   });
+
+  describe('deployment status', () => {
+    describe('running', () => {
+      beforeEach(() => {
+        vm = mountComponent(Component, {
+          deployment: Object.assign({}, deploymentMockData, { status: 'running' }),
+        });
+      });
+
+      it('renders information about running deployment', () => {
+        expect(vm.$el.querySelector('.js-deployment-info').textContent).toContain('Deploying to');
+      });
+    });
+
+    describe('success', () => {
+      beforeEach(() => {
+        vm = mountComponent(Component, {
+          deployment: Object.assign({}, deploymentMockData, { status: 'success' }),
+        });
+      });
+
+      it('renders information about finished deployment', () => {
+        expect(vm.$el.querySelector('.js-deployment-info').textContent).toContain('Deployed to');
+      });
+    });
+
+    describe('failed', () => {
+      beforeEach(() => {
+        vm = mountComponent(Component, {
+          deployment: Object.assign({}, deploymentMockData, { status: 'failed' }),
+        });
+      });
+
+      it('renders information about finished deployment', () => {
+        expect(vm.$el.querySelector('.js-deployment-info').textContent).toContain(
+          'Failed to deploy to',
+        );
+      });
+    });
+  });
 });
diff --git a/spec/javascripts/vue_mr_widget/mr_widget_options_spec.js b/spec/javascripts/vue_mr_widget/mr_widget_options_spec.js
index d1a064b9f4d..27b6c91e154 100644
--- a/spec/javascripts/vue_mr_widget/mr_widget_options_spec.js
+++ b/spec/javascripts/vue_mr_widget/mr_widget_options_spec.js
@@ -189,7 +189,7 @@ describe('mrWidgetOptions', () => {
       it('should fetch deployments', done => {
         spyOn(vm.service, 'fetchDeployments').and.returnValue(returnPromise([{ id: 1 }]));
 
-        vm.fetchDeployments();
+        vm.fetchPreMergeDeployments();
 
         setTimeout(() => {
           expect(vm.service.fetchDeployments).toHaveBeenCalled();
@@ -454,6 +454,7 @@ describe('mrWidgetOptions', () => {
       deployed_at: '2017-03-22T22:44:42.258Z',
       deployed_at_formatted: 'Mar 22, 2017 10:44pm',
       changes,
+      status: 'success'
     };
 
     beforeEach(done => {
@@ -486,4 +487,189 @@ describe('mrWidgetOptions', () => {
       ).toEqual(changes.length);
     });
   });
+
+  describe('pipeline for target branch after merge', () => {
+    describe('with information for target branch pipeline', () => {
+      beforeEach(done => {
+        vm.mr.state = 'merged';
+        vm.mr.mergePipeline = {
+          id: 127,
+          user: {
+            id: 1,
+            name: 'Administrator',
+            username: 'root',
+            state: 'active',
+            avatar_url: null,
+            web_url: 'http://localhost:3000/root',
+            status_tooltip_html: null,
+            path: '/root',
+          },
+          active: true,
+          coverage: null,
+          source: 'push',
+          created_at: '2018-10-22T11:41:35.186Z',
+          updated_at: '2018-10-22T11:41:35.433Z',
+          path: '/root/ci-web-terminal/pipelines/127',
+          flags: {
+            latest: true,
+            stuck: true,
+            auto_devops: false,
+            yaml_errors: false,
+            retryable: false,
+            cancelable: true,
+            failure_reason: false,
+          },
+          details: {
+            status: {
+              icon: 'status_pending',
+              text: 'pending',
+              label: 'pending',
+              group: 'pending',
+              tooltip: 'pending',
+              has_details: true,
+              details_path: '/root/ci-web-terminal/pipelines/127',
+              illustration: null,
+              favicon:
+                '/assets/ci_favicons/favicon_status_pending-5bdf338420e5221ca24353b6bff1c9367189588750632e9a871b7af09ff6a2ae.png',
+            },
+            duration: null,
+            finished_at: null,
+            stages: [
+              {
+                name: 'test',
+                title: 'test: pending',
+                status: {
+                  icon: 'status_pending',
+                  text: 'pending',
+                  label: 'pending',
+                  group: 'pending',
+                  tooltip: 'pending',
+                  has_details: true,
+                  details_path: '/root/ci-web-terminal/pipelines/127#test',
+                  illustration: null,
+                  favicon:
+                    '/assets/ci_favicons/favicon_status_pending-5bdf338420e5221ca24353b6bff1c9367189588750632e9a871b7af09ff6a2ae.png',
+                },
+                path: '/root/ci-web-terminal/pipelines/127#test',
+                dropdown_path: '/root/ci-web-terminal/pipelines/127/stage.json?stage=test',
+              },
+            ],
+            artifacts: [],
+            manual_actions: [],
+            scheduled_actions: [],
+          },
+          ref: {
+            name: 'master',
+            path: '/root/ci-web-terminal/commits/master',
+            tag: false,
+            branch: true,
+          },
+          commit: {
+            id: 'aa1939133d373c94879becb79d91828a892ee319',
+            short_id: 'aa193913',
+            title: "Merge branch 'master-test' into 'master'",
+            created_at: '2018-10-22T11:41:33.000Z',
+            parent_ids: [
+              '4622f4dd792468993003caf2e3be978798cbe096',
+              '76598df914cdfe87132d0c3c40f80db9fa9396a4',
+            ],
+            message:
+              "Merge branch 'master-test' into 'master'\n\nUpdate .gitlab-ci.yml\n\nSee merge request root/ci-web-terminal!1",
+            author_name: 'Administrator',
+            author_email: 'admin@example.com',
+            authored_date: '2018-10-22T11:41:33.000Z',
+            committer_name: 'Administrator',
+            committer_email: 'admin@example.com',
+            committed_date: '2018-10-22T11:41:33.000Z',
+            author: {
+              id: 1,
+              name: 'Administrator',
+              username: 'root',
+              state: 'active',
+              avatar_url: null,
+              web_url: 'http://localhost:3000/root',
+              status_tooltip_html: null,
+              path: '/root',
+            },
+            author_gravatar_url: null,
+            commit_url:
+              'http://localhost:3000/root/ci-web-terminal/commit/aa1939133d373c94879becb79d91828a892ee319',
+            commit_path: '/root/ci-web-terminal/commit/aa1939133d373c94879becb79d91828a892ee319',
+          },
+          cancel_path: '/root/ci-web-terminal/pipelines/127/cancel',
+        };
+        vm.$nextTick(done);
+      });
+
+      it('renders pipeline block', () => {
+        expect(vm.$el.querySelector('.js-post-merge-pipeline')).not.toBeNull();
+      });
+
+      describe('with post merge deployments', () => {
+        beforeEach(done => {
+          vm.mr.postMergeDeployments = [{
+            id: 15,
+            name: 'review/diplo',
+            url: '/root/acets-review-apps/environments/15',
+            stop_url: '/root/acets-review-apps/environments/15/stop',
+            metrics_url: '/root/acets-review-apps/environments/15/deployments/1/metrics',
+            metrics_monitoring_url: '/root/acets-review-apps/environments/15/metrics',
+            external_url: 'http://diplo.',
+            external_url_formatted: 'diplo.',
+            deployed_at: '2017-03-22T22:44:42.258Z',
+            deployed_at_formatted: 'Mar 22, 2017 10:44pm',
+            changes: [
+              {
+                path: 'index.html',
+                external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/index.html',
+              },
+              {
+                path: 'imgs/gallery.html',
+                external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/imgs/gallery.html',
+              },
+              {
+                path: 'about/',
+                external_url: 'http://root-master-patch-91341.volatile-watch.surge.sh/about/',
+              },
+            ],
+            status: 'success'
+          }];
+
+          vm.$nextTick(done);
+        });
+
+        it('renders post deployment information', () => {
+          expect(vm.$el.querySelector('.js-post-deployment')).not.toBeNull();
+        });
+      });
+    });
+
+    describe('without information for target branch pipeline', () => {
+      beforeEach(done => {
+        vm.mr.state = 'merged';
+
+        vm.$nextTick(done);
+      });
+
+      it('does not render pipeline block', () => {
+        expect(vm.$el.querySelector('.js-post-merge-pipeline')).toBeNull();
+      });
+    });
+
+    describe('when state is not merged', () => {
+      beforeEach(done => {
+        vm.mr.state = 'archived';
+
+        vm.$nextTick(done);
+      });
+
+      it('does not render pipeline block', () => {
+        expect(vm.$el.querySelector('.js-post-merge-pipeline')).toBeNull();
+      });
+
+      it('does not render post deployment information', () => {
+        expect(vm.$el.querySelector('.js-post-deployment')).toBeNull();
+      });
+    });
+  });
 });
diff --git a/spec/models/environment_status_spec.rb b/spec/models/environment_status_spec.rb
index f2eb263c98c..e7805d52d75 100644
--- a/spec/models/environment_status_spec.rb
+++ b/spec/models/environment_status_spec.rb
@@ -5,13 +5,15 @@ describe EnvironmentStatus do
   let(:environment)   { deployment.environment}
   let(:project)       { deployment.project }
   let(:merge_request) { create(:merge_request, :deployed_review_app, deployment: deployment) }
+  let(:sha)           { deployment.sha }
 
-  subject(:environment_status) { described_class.new(environment, merge_request) }
+  subject(:environment_status) { described_class.new(environment, merge_request, sha) }
 
   it { is_expected.to delegate_method(:id).to(:environment) }
   it { is_expected.to delegate_method(:name).to(:environment) }
   it { is_expected.to delegate_method(:project).to(:environment) }
   it { is_expected.to delegate_method(:deployed_at).to(:deployment).as(:created_at) }
+  it { is_expected.to delegate_method(:status).to(:deployment) }
 
   describe '#project' do
     subject { environment_status.project }
@@ -58,4 +60,32 @@ describe EnvironmentStatus do
       )
     end
   end
+
+  describe '.for_merge_request' do
+    let(:admin)    { create(:admin) }
+    let(:pipeline) { create(:ci_pipeline, sha: sha) }
+
+    it 'is based on merge_request.head_pipeline' do
+      expect(merge_request).to receive(:head_pipeline).and_return(pipeline)
+      expect(merge_request).not_to receive(:merge_pipeline)
+
+      described_class.for_merge_request(merge_request, admin)
+    end
+  end
+
+  describe '.after_merge_request' do
+    let(:admin)    { create(:admin) }
+    let(:pipeline) { create(:ci_pipeline, sha: sha) }
+
+    before do
+      merge_request.mark_as_merged!
+    end
+
+    it 'is based on merge_request.merge_pipeline' do
+      expect(merge_request).to receive(:merge_pipeline).and_return(pipeline)
+      expect(merge_request).not_to receive(:head_pipeline)
+
+      described_class.after_merge_request(merge_request, admin)
+    end
+  end
 end
diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 666d7e69f89..c8943f2d86f 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -1058,6 +1058,26 @@ describe MergeRequest do
     end
   end
 
+  describe '#merge_pipeline' do
+    it 'returns nil when not merged' do
+      expect(subject.merge_pipeline).to be_nil
+    end
+
+    context 'when the MR is merged' do
+      let(:sha)      { subject.target_project.commit.id }
+      let(:pipeline) { create(:ci_empty_pipeline, sha: sha, ref: subject.target_branch, project: subject.target_project) }
+
+      before do
+        subject.mark_as_merged!
+        subject.update_attribute(:merge_commit_sha, pipeline.sha)
+      end
+
+      it 'returns the post-merge pipeline' do
+        expect(subject.merge_pipeline).to eq(pipeline)
+      end
+    end
+  end
+
   describe '#has_ci?' do
     let(:merge_request) { build_stubbed(:merge_request) }
 
diff --git a/spec/serializers/environment_status_entity_spec.rb b/spec/serializers/environment_status_entity_spec.rb
index 6894c65d639..1b4d8b70aa6 100644
--- a/spec/serializers/environment_status_entity_spec.rb
+++ b/spec/serializers/environment_status_entity_spec.rb
@@ -9,7 +9,7 @@ describe EnvironmentStatusEntity do
   let(:project)       { deployment.project }
   let(:merge_request) { create(:merge_request, :deployed_review_app, deployment: deployment) }
 
-  let(:environment_status) { EnvironmentStatus.new(environment, merge_request) }
+  let(:environment_status) { EnvironmentStatus.new(environment, merge_request, merge_request.diff_head_sha) }
   let(:entity)             { described_class.new(environment_status, request: request) }
 
   subject { entity.as_json }
@@ -26,6 +26,7 @@ describe EnvironmentStatusEntity do
   it { is_expected.to include(:deployed_at) }
   it { is_expected.to include(:deployed_at_formatted) }
   it { is_expected.to include(:changes) }
+  it { is_expected.to include(:status) }
 
   it { is_expected.not_to include(:stop_url) }
   it { is_expected.not_to include(:metrics_url) }
diff --git a/spec/serializers/merge_request_widget_entity_spec.rb b/spec/serializers/merge_request_widget_entity_spec.rb
index 5bf8aa7f23f..561421d5ac8 100644
--- a/spec/serializers/merge_request_widget_entity_spec.rb
+++ b/spec/serializers/merge_request_widget_entity_spec.rb
@@ -52,6 +52,40 @@ describe MergeRequestWidgetEntity do
     end
   end
 
+  describe 'merge_pipeline' do
+    it 'returns nil' do
+      expect(subject[:merge_pipeline]).to be_nil
+    end
+
+    context 'when is merged' do
+      let(:resource) { create(:merged_merge_request, source_project: project, merge_commit_sha: project.commit.id) }
+      let(:pipeline) { create(:ci_empty_pipeline, project: project, ref: resource.target_branch, sha: resource.merge_commit_sha) }
+
+      before do
+        project.add_maintainer(user)
+      end
+
+      it 'returns merge_pipeline' do
+        pipeline.reload
+        pipeline_payload = PipelineDetailsEntity
+                             .represent(pipeline, request: request)
+                             .as_json
+
+        expect(subject[:merge_pipeline]).to eq(pipeline_payload)
+      end
+
+      context 'when user cannot read pipelines on target project' do
+        before do
+          project.add_guest(user)
+        end
+
+        it 'returns nil' do
+          expect(subject[:merge_pipeline]).to be_nil
+        end
+      end
+    end
+  end
+
   describe 'metrics' do
     context 'when metrics record exists with merged data' do
       before do