1 files changed, 76 insertions, 0 deletions
diff --git a/spec/features/merge_requests/merge_request_versions_spec.rb b/spec/features/merge_requests/merge_request_versions_spec.rb
new file mode 100644
index 00000000000..22d9e42119d
--- /dev/null
+++ b/spec/features/merge_requests/merge_request_versions_spec.rb
@@ -0,0 +1,76 @@
+require 'spec_helper'
+
+feature 'Merge Request versions', js: true, feature: true do
+  before do
+    login_as :admin
+    merge_request = create(:merge_request, importing: true)
+    merge_request.merge_request_diffs.create(head_commit_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9')
+    merge_request.merge_request_diffs.create(head_commit_sha: '5937ac0a7beb003549fc5fd26fc247adbce4a52e')
+    project = merge_request.source_project
+    visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)
+  end
+
+  it 'show the latest version of the diff' do
+    page.within '.mr-version-dropdown' do
+      expect(page).to have_content 'latest version'
+    end
+
+    expect(page).to have_content '8 changed files'
+  end
+
+  describe 'switch between versions' do
+    before do
+      page.within '.mr-version-dropdown' do
+        find('.btn-default').click
+        click_link 'version 1'
+      end
+    end
+
+    it 'should show older version' do
+      page.within '.mr-version-dropdown' do
+        expect(page).to have_content 'version 1'
+      end
+
+      expect(page).to have_content '5 changed files'
+    end
+
+    it 'show the message about disabled comments' do
+      expect(page).to have_content 'Comments are disabled'
+    end
+  end
+
+  describe 'compare with older version' do
+    before do
+      page.within '.mr-version-compare-dropdown' do
+        find('.btn-default').click
+        click_link 'version 1'
+      end
+    end
+
+    it 'should have correct value in the compare dropdown' do
+      page.within '.mr-version-compare-dropdown' do
+        expect(page).to have_content 'version 1'
+      end
+    end
+
+    it 'show the message about disabled comments' do
+      expect(page).to have_content 'Comments are disabled'
+    end
+
+    it 'show diff between new and old version' do
+      expect(page).to have_content '4 changed files with 15 additions and 6 deletions'
+    end
+
+    it 'show diff between new and old version' do
+      expect(page).to have_content '4 changed files with 15 additions and 6 deletions'
+    end
+
+    it 'should return to latest version when "Show latest version" button is clicked' do
+      click_link 'Show latest version'
+      page.within '.mr-version-dropdown' do
+        expect(page).to have_content 'latest version'
+      end
+      expect(page).to have_content '8 changed files'
+    end
+  end
+end