1 files changed, 109 insertions, 0 deletions
diff --git a/spec/features/merge_requests/merge_when_pipeline_succeeds_spec.rb b/spec/features/merge_requests/merge_when_pipeline_succeeds_spec.rb
new file mode 100644
index 00000000000..638b27172ec
--- /dev/null
+++ b/spec/features/merge_requests/merge_when_pipeline_succeeds_spec.rb
@@ -0,0 +1,109 @@
+require 'spec_helper'
+
+feature 'Merge When Pipeline Succeeds', :feature, :js do
+  let(:user) { create(:user) }
+  let(:project) { create(:project, :public) }
+
+  let(:merge_request) do
+    create(:merge_request_with_diffs, source_project: project,
+                                      author: user,
+                                      title: 'Bug NS-04')
+  end
+
+  let(:pipeline) do
+    create(:ci_pipeline, project: project,
+                         sha: merge_request.diff_head_sha,
+                         ref: merge_request.source_branch)
+  end
+
+  before { project.team << [user, :master] }
+
+  context 'when there is active pipeline for merge request' do
+    background do
+      create(:ci_build, pipeline: pipeline)
+    end
+
+    before do
+      login_as user
+      visit_merge_request(merge_request)
+    end
+
+    it 'displays the Merge When Pipeline Succeeds button' do
+      expect(page).to have_button "Merge When Pipeline Succeeds"
+    end
+
+    context "Merge When Pipeline Succeeds enabled" do
+      before do
+        click_button "Merge When Pipeline Succeeds"
+      end
+
+      it 'activates Merge When Pipeline Succeeds feature' do
+        expect(page).to have_link "Cancel Automatic Merge"
+
+        expect(page).to have_content "Set by #{user.name} to be merged automatically when the pipeline succeeds."
+        expect(page).to have_content "The source branch will not be removed."
+
+        visit_merge_request(merge_request) # Needed to refresh the page
+        expect(page).to have_content /Enabled an automatic merge when the pipeline for [0-9a-f]{8} succeeds/i
+      end
+    end
+  end
+
+  context 'when merge when pipeline succeeds is enabled' do
+    let(:merge_request) do
+      create(:merge_request_with_diffs, :simple,  source_project: project,
+                                                  author: user,
+                                                  merge_user: user,
+                                                  title: 'MepMep',
+                                                  merge_when_build_succeeds: true)
+    end
+
+    let!(:build) do
+      create(:ci_build, pipeline: pipeline)
+    end
+
+    before do
+      login_as user
+      visit_merge_request(merge_request)
+    end
+
+    it 'allows to cancel the automatic merge' do
+      click_link "Cancel Automatic Merge"
+
+      expect(page).to have_button "Merge When Pipeline Succeeds"
+
+      visit_merge_request(merge_request) # refresh the page
+      expect(page).to have_content "canceled the automatic merge"
+    end
+
+    it "allows the user to remove the source branch" do
+      expect(page).to have_link "Remove Source Branch When Merged"
+
+      click_link "Remove Source Branch When Merged"
+      expect(page).to have_content "The source branch will be removed"
+    end
+
+    context 'when pipeline succeeds' do
+      background { build.success }
+
+      it 'merges merge request' do
+        visit_merge_request(merge_request) # refresh the page
+
+        expect(page).to have_content 'The changes were merged'
+        expect(merge_request.reload).to be_merged
+      end
+    end
+  end
+
+  context 'when pipeline is not active' do
+    it "does not allow to enable merge when pipeline succeeds" do
+      visit_merge_request(merge_request)
+
+      expect(page).not_to have_link 'Merge When Pipeline Succeeds'
+    end
+  end
+
+  def visit_merge_request(merge_request)
+    visit namespace_project_merge_request_path(merge_request.project.namespace, merge_request.project, merge_request)
+  end
+end