Merge remote-tracking branch 'upstream/master' into 27377-preload-pipeline-entity27377-preload-pipeline-entity

* upstream/master: (2534 commits)
  Update VERSION to 9.3.0-pre
  Update CHANGELOG.md for 9.2.0
  removes unnecessary redundacy in usage ping doc
  Respect the typo as rubocop said
  Add a test to ensure this works on MySQL
  Change pipelines schedules help page path
  change domain to hostname in usage ping doc
  Fixes broken MySQL migration for retried
  Show password field mask while editing service settings
  Add notes for supported schedulers and cloud providers
  Move environment monitoring to environments doc
  Add docs for change of Cache/Artifact restore order"
  Avoid resource intensive login checks if password is not provided
  Change translation for 'coding' by 'desarrollo' for Spanish
  Add to docs: issues multiple assignees
  rename "Add emoji" and "Award emoji" to "Add reaction" where appropriate
  Add project and group notification settings info
  32570 Fix border-bottom for project activity tab
  Add users endpoint to frontend API class
  Rename users on mysql
  ...

1 files changed, 212 insertions, 0 deletions

diff --git a/spec/features/merge_requests/versions_spec.rb b/spec/features/merge_requests/versions_spec.rb
new file mode 100644
index 00000000000..2b5b803946c
--- /dev/null
+++ b/spec/features/merge_requests/versions_spec.rb
@@ -0,0 +1,212 @@
+require 'spec_helper'
+
+feature 'Merge Request versions', js: true, feature: true do
+  let(:merge_request) { create(:merge_request, importing: true) }
+  let(:project) { merge_request.source_project }
+  let!(:merge_request_diff1) { merge_request.merge_request_diffs.create(head_commit_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9') }
+  let!(:merge_request_diff2) { merge_request.merge_request_diffs.create(head_commit_sha: nil) }
+  let!(:merge_request_diff3) { merge_request.merge_request_diffs.create(head_commit_sha: '5937ac0a7beb003549fc5fd26fc247adbce4a52e') }
+
+  before do
+    login_as :admin
+    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
+
+      # Wait for the page to load
+      page.within '.mr-version-dropdown' do
+        expect(page).to have_content '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 comments' do
+      expect(page).to have_content 'Not all comments are displayed'
+    end
+
+    it 'shows comments that were last relevant at that version' do
+      position = Gitlab::Diff::Position.new(
+        old_path: ".gitmodules",
+        new_path: ".gitmodules",
+        old_line: nil,
+        new_line: 4,
+        diff_refs: merge_request_diff1.diff_refs
+      )
+      outdated_diff_note = create(:diff_note_on_merge_request, project: project, noteable: merge_request, position: position)
+      outdated_diff_note.position = outdated_diff_note.original_position
+      outdated_diff_note.save!
+
+      visit current_url
+
+      expect(page).to have_css(".diffs .notes[data-discussion-id='#{outdated_diff_note.discussion_id}']")
+    end
+
+    it 'allows commenting' do
+      diff_file_selector = ".diff-file[id='7445606fbf8f3683cd42bdc54b05d7a0bc2dfc44']"
+      line_code = '7445606fbf8f3683cd42bdc54b05d7a0bc2dfc44_2_2'
+
+      page.within(diff_file_selector) do
+        find(".line_holder[id='#{line_code}'] td:nth-of-type(1)").trigger 'mouseover'
+        find(".line_holder[id='#{line_code}'] button").trigger 'click'
+
+        page.within("form[data-line-code='#{line_code}']") do
+          fill_in "note[note]", with: "Typo, please fix"
+          find(".js-comment-button").click
+        end
+
+        wait_for_ajax
+
+        expect(page).to have_content("Typo, please fix")
+      end
+    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
+
+      # Wait for the page to load
+      page.within '.mr-version-compare-dropdown' do
+        expect(page).to have_content 'version 1'
+      end
+    end
+
+    it 'has a path with comparison context' do
+      expect(page).to have_current_path diffs_namespace_project_merge_request_path(
+        project.namespace,
+        project,
+        merge_request.iid,
+        diff_id: merge_request_diff3.id,
+        start_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9'
+      )
+    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 comments' do
+      expect(page).to have_content 'Not all comments are displayed'
+    end
+
+    it 'shows comments that were last relevant at that version' do
+      position = Gitlab::Diff::Position.new(
+        old_path: ".gitmodules",
+        new_path: ".gitmodules",
+        old_line: 4,
+        new_line: 4,
+        diff_refs: merge_request_diff3.compare_with(merge_request_diff1.head_commit_sha).diff_refs
+      )
+      outdated_diff_note = create(:diff_note_on_merge_request, project: project, noteable: merge_request, position: position)
+
+      visit current_url
+      wait_for_ajax
+
+      expect(page).to have_css(".diffs .notes[data-discussion-id='#{outdated_diff_note.discussion_id}']")
+    end
+
+    it 'allows commenting' do
+      diff_file_selector = ".diff-file[id='7445606fbf8f3683cd42bdc54b05d7a0bc2dfc44']"
+      line_code = '7445606fbf8f3683cd42bdc54b05d7a0bc2dfc44_4_4'
+
+      page.within(diff_file_selector) do
+        find(".line_holder[id='#{line_code}'] td:nth-of-type(1)").trigger 'mouseover'
+        find(".line_holder[id='#{line_code}'] button").trigger 'click'
+
+        page.within("form[data-line-code='#{line_code}']") do
+          fill_in "note[note]", with: "Typo, please fix"
+          find(".js-comment-button").click
+        end
+
+        wait_for_ajax
+
+        expect(page).to have_content("Typo, please fix")
+      end
+    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
+
+  describe 'compare with same version' do
+    before do
+      page.within '.mr-version-compare-dropdown' do
+        find('.btn-default').click
+        click_link 'version 1'
+      end
+    end
+
+    it 'should have 0 chages between versions' do
+      page.within '.mr-version-compare-dropdown' do
+        expect(find('.dropdown-toggle')).to have_content 'version 1'
+      end
+
+      page.within '.mr-version-dropdown' do
+        find('.btn-default').click
+        click_link 'version 1'
+      end
+      expect(page).to have_content '0 changed files'
+    end
+  end
+
+  describe 'compare with newer version' do
+    before do
+      page.within '.mr-version-compare-dropdown' do
+        find('.btn-default').click
+        click_link 'version 2'
+      end
+    end
+
+    it 'should set the compared versions to be the same' do
+      page.within '.mr-version-compare-dropdown' do
+        expect(find('.dropdown-toggle')).to have_content 'version 2'
+      end
+
+      page.within '.mr-version-dropdown' do
+        find('.btn-default').click
+        click_link 'version 1'
+      end
+
+      page.within '.mr-version-compare-dropdown' do
+        expect(page).to have_content 'version 1'
+      end
+
+      expect(page).to have_content '0 changed files'
+    end
+  end
+end