GithubImport: Enable users to import _modern_ diff notes

To enable users to import _modern_ diff notes features, like
suggestions, the diff note must be created with `DiffNote` model,
instead of `LegacyDiffNote`.

This commit enables the GithubImporter to use `DiffNotes` when the
`:github_importer_replace_legacy_diffnote` feature flag is enabled.

With the intent to get better performance, and given that Github doesn't
support `quick_actions`, the quick actions parsing is disabled for notes
created by the importer.

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/340624

MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/71765

app/services/import/github/notes/create_service.rb

+# frozen_string_literal: true
+
+module Import
+  module Github
+    module Notes
+      class CreateService < ::Notes::CreateService
+        # Github does not have support to quick actions in notes (like /assign)
+        # Therefore, when importing notes we skip the quick actions processing
+        def quick_actions_supported?(_note)
+          false
+        end
+      end
+    end
+  end
+end

app/services/notes/create_service.rb

@@ -43,7 +43,7 @@ module Notes
     private
 
     def execute_quick_actions(note)
-      return yield(false) unless quick_actions_service.supported?(note)
+      return yield(false) unless quick_actions_supported?(note)
 
       content, update_params, message = quick_actions_service.execute(note, quick_action_options)
       only_commands = content.empty?
@@ -54,6 +54,10 @@ module Notes
       do_commands(note, update_params, message, only_commands)
     end
 
+    def quick_actions_supported?(note)
+      quick_actions_service.supported?(note)
+    end
+
     def quick_actions_service
       @quick_actions_service ||= QuickActionsService.new(project, current_user)
     end

config/feature_flags/development/github_importer_use_diff_note_with_suggestions.yml

+---
+name: github_importer_use_diff_note_with_suggestions
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/71765
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/344309
+milestone: '14.5'
+type: development
+group: group::import
+default_enabled: false

lib/gitlab/github_import/importer/diff_note_importer.rb

@@ -4,58 +4,132 @@ module Gitlab
   module GithubImport
     module Importer
       class DiffNoteImporter
-        attr_reader :note, :project, :client, :user_finder
-
-        # note - An instance of `Gitlab::GithubImport::Representation::DiffNote`.
-        # project - An instance of `Project`.
-        # client - An instance of `Gitlab::GithubImport::Client`.
+        # note - An instance of `Gitlab::GithubImport::Representation::DiffNote`
+        # project - An instance of `Project`
+        # client - An instance of `Gitlab::GithubImport::Client`
         def initialize(note, project, client)
           @note = note
           @project = project
           @client = client
-          @user_finder = GithubImport::UserFinder.new(project, client)
         end
 
         def execute
-          return unless (mr_id = find_merge_request_id)
+          return if merge_request_id.blank?
 
-          author_id, author_found = user_finder.author_id_for(note)
+          build_author_attributes
 
-          note_body = MarkdownText.format(note.note, note.author, author_found)
+          # Diff notes with suggestions are imported with DiffNote, which is
+          # slower to import than LegacyDiffNote. Importing DiffNote is slower
+          # because it cannot use the BulkImporting strategy, which skips
+          # callbacks and validations. For this reason, notes that don't have
+          # suggestions are still imported with LegacyDiffNote
+          if import_with_diff_note?
+            import_with_diff_note
+          else
+            import_with_legacy_diff_note
+          end
+        rescue ActiveRecord::InvalidForeignKey => e
+          # It's possible the project and the issue have been deleted since
+          # scheduling this job. In this case we'll just skip creating the note
+          Logger.info(
+            message: e.message,
+            github_identifiers: note.github_identifiers
+          )
+        end
 
-          attributes = {
-            discussion_id: Discussion.discussion_id(note),
+        private
+
+        attr_reader :note, :project, :client, :author_id, :author_found
+
+        def import_with_diff_note?
+          note.contains_suggestion? && use_diff_note_with_suggestions_enabled?
+        end
+
+        def use_diff_note_with_suggestions_enabled?
+          Feature.enabled?(
+            :github_importer_use_diff_note_with_suggestions,
+            default_enabled: :yaml
+          )
+        end
+
+        def build_author_attributes
+          @author_id, @author_found = user_finder.author_id_for(note)
+        end
+
+        # rubocop:disable Gitlab/BulkInsert
+        def import_with_legacy_diff_note
+          log_diff_note_creation('LegacyDiffNote')
+          # It's possible that during an import we'll insert tens of thousands
+          # of diff notes. If we were to use the Note/LegacyDiffNote model here
+          # we'd also have to run additional queries for both validations and
+          # callbacks, putting a lot of pressure on the database.
+          #
+          # To work around this we're using bulk_insert with a single row. This
+          # allows us to efficiently insert data (even if it's just 1 row)
+          # without having to use all sorts of hacks to disable callbacks.
+          Gitlab::Database.main.bulk_insert(LegacyDiffNote.table_name, [{
             noteable_type: 'MergeRequest',
-            noteable_id: mr_id,
+            system: false,
+            type: 'LegacyDiffNote',
+            discussion_id: Discussion.discussion_id(note),
+            noteable_id: merge_request_id,
             project_id: project.id,
             author_id: author_id,
             note: note_body,
-            system: false,
             commit_id: note.original_commit_id,
             line_code: note.line_code,
-            type: 'LegacyDiffNote',
             created_at: note.created_at,
             updated_at: note.updated_at,
             st_diff: note.diff_hash.to_yaml
-          }
+          }])
+        end
+        # rubocop:enabled Gitlab/BulkInsert
 
-          # It's possible that during an import we'll insert tens of thousands
-          # of diff notes. If we were to use the Note/LegacyDiffNote model here
-          # we'd also have to run additional queries for both validations and
-          # callbacks, putting a lot of pressure on the database.
-          #
-          # To work around this we're using bulk_insert with a single row. This
-          # allows us to efficiently insert data (even if it's just 1 row)
-          # without having to use all sorts of hacks to disable callbacks.
-          Gitlab::Database.main.bulk_insert(LegacyDiffNote.table_name, [attributes]) # rubocop:disable Gitlab/BulkInsert
-        rescue ActiveRecord::InvalidForeignKey
-          # It's possible the project and the issue have been deleted since
-          # scheduling this job. In this case we'll just skip creating the note.
+        def import_with_diff_note
+          log_diff_note_creation('DiffNote')
+
+          ::Import::Github::Notes::CreateService.new(project, author, {
+            noteable_type: 'MergeRequest',
+            system: false,
+            type: 'DiffNote',
+            noteable_id: merge_request_id,
+            project_id: project.id,
+            note: note_body,
+            commit_id: note.original_commit_id,
+            created_at: note.created_at,
+            updated_at: note.updated_at,
+            position: note.diff_position(merge_request)
+          }).execute
+        end
+
+        def note_body
+          @note_body ||= MarkdownText.format(note.note, note.author, author_found)
+        end
+
+        def author
+          @author ||= User.find(author_id)
+        end
+
+        def merge_request
+          @merge_request ||= MergeRequest.find(merge_request_id)
         end
 
         # Returns the ID of the merge request this note belongs to.
-        def find_merge_request_id
-          GithubImport::IssuableFinder.new(project, note).database_id
+        def merge_request_id
+          @merge_request_id ||= GithubImport::IssuableFinder.new(project, note).database_id
+        end
+
+        def user_finder
+          @user_finder ||= GithubImport::UserFinder.new(project, client)
+        end
+
+        def log_diff_note_creation(model)
+          Logger.info(
+            project_id: project.id,
+            importer: self.class.name,
+            github_identifiers: note.github_identifiers,
+            model: model
+          )
         end
       end
     end

lib/gitlab/github_import/representation/diff_note.rb

@@ -10,8 +10,9 @@ module Gitlab
         attr_reader :attributes
 
         expose_attribute :noteable_type, :noteable_id, :commit_id, :file_path,
-                         :diff_hunk, :author, :note, :created_at, :updated_at,
-                         :original_commit_id, :note_id
+                         :diff_hunk, :author, :created_at, :updated_at,
+                         :original_commit_id, :note_id, :end_line, :start_line,
+                         :side
 
         NOTEABLE_ID_REGEX = %r{/pull/(?<iid>\d+)}i.freeze
 
@@ -42,7 +43,8 @@ module Gitlab
             updated_at: note.updated_at,
             note_id: note.id,
             end_line: note.line,
-            start_line: note.start_line
+            start_line: note.start_line,
+            side: note.side
           }
 
           new(hash)
@@ -60,17 +62,31 @@ module Gitlab
         #              Hash must be Symbols.
         def initialize(attributes)
           @attributes = attributes
+
+          @note_formatter = DiffNotes::SuggestionFormatter.new(
+            note: attributes[:note],
+            start_line: attributes[:start_line],
+            end_line: attributes[:end_line]
+          )
+        end
+
+        def contains_suggestion?
+          @note_formatter.contains_suggestion?
+        end
+
+        def note
+          @note_formatter.formatted_note
         end
 
         def line_code
           diff_line = Gitlab::Diff::Parser.new.parse(diff_hunk.lines).to_a.last
 
-          Gitlab::Git
-            .diff_line_code(file_path, diff_line.new_pos, diff_line.old_pos)
+          Gitlab::Git.diff_line_code(file_path, diff_line.new_pos, diff_line.old_pos)
         end
 
         # Returns a Hash that can be used to populate `notes.st_diff`, removing
         # the need for requesting Git data for every diff note.
+        # Used when importing with LegacyDiffNote
         def diff_hash
           {
             diff: diff_hunk,
@@ -85,12 +101,15 @@ module Gitlab
           }
         end
 
-        def note
-          @note ||= DiffNotes::SuggestionFormatter.formatted_note_for(
-            note: attributes[:note],
-            start_line: attributes[:start_line],
-            end_line: attributes[:end_line]
-          )
+        # Used when importing with DiffNote
+        def diff_position(merge_request)
+          position_params = {
+            diff_refs: merge_request.diff_refs,
+            old_path: file_path,
+            new_path: file_path
+          }
+
+          Gitlab::Diff::Position.new(position_params.merge(diff_line_params))
         end
 
         def github_identifiers
@@ -100,6 +119,20 @@ module Gitlab
             noteable_type: noteable_type
           }
         end
+
+        private
+
+        def diff_line_params
+          if addition?
+            { new_line: end_line, old_line: nil }
+          else
+            { new_line: nil, old_line: end_line }
+          end
+        end
+
+        def addition?
+          side == 'RIGHT'
+        end
       end
     end
   end

lib/gitlab/github_import/representation/diff_notes/suggestion_formatter.rb

@@ -10,23 +10,25 @@ module Gitlab
     module Representation
       module DiffNotes
         class SuggestionFormatter
+          include Gitlab::Utils::StrongMemoize
+
           # A github suggestion:
           # - the ```suggestion tag must be the first text of the line
           #   - it might have up to 3 spaces before the ```suggestion tag
           # - extra text on the ```suggestion tag line will be ignored
           GITHUB_SUGGESTION = /^\ {,3}(?<suggestion>```suggestion\b).*(?<eol>\R)/.freeze
 
-          def self.formatted_note_for(...)
-            new(...).formatted_note
-          end
-
           def initialize(note:, start_line: nil, end_line: nil)
             @note = note
             @start_line = start_line
             @end_line = end_line
           end
 
+          # Returns a tuple with:
+          #   - a boolean indicating if the note has suggestions
+          #   - the note with the suggestion formatted for Gitlab
           def formatted_note
+            @formatted_note ||=
               if contains_suggestion?
                 note.gsub(
                   GITHUB_SUGGESTION,
@@ -37,13 +39,15 @@ module Gitlab
               end
           end
 
-          private
-
-          attr_reader :note, :start_line, :end_line
-
           def contains_suggestion?
+            strong_memoize(:contain_suggestion) do
               note.to_s.match?(GITHUB_SUGGESTION)
             end
+          end
+
+          private
+
+          attr_reader :note, :start_line, :end_line
 
           # Github always saves the comment on the _last_ line of the range.
           # Therefore, the diff hunk will always be related to lines before

spec/lib/gitlab/github_import/importer/diff_note_importer_spec.rb

@@ -2,156 +2,224 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::GithubImport::Importer::DiffNoteImporter do
-  let(:project) { create(:project) }
-  let(:client) { double(:client) }
-  let(:user) { create(:user) }
-  let(:created_at) { Time.new(2017, 1, 1, 12, 00) }
-  let(:updated_at) { Time.new(2017, 1, 1, 12, 15) }
+RSpec.describe Gitlab::GithubImport::Importer::DiffNoteImporter, :aggregate_failures do
+  let_it_be(:project) { create(:project, :repository) }
+  let_it_be(:user) { create(:user) }
 
-  let(:hunk) do
-    '@@ -1 +1 @@
+  let(:client) { double(:client) }
+  let(:discussion_id) { 'b0fa404393eeebb4e82becb8104f238812bb1fe6' }
+  let(:created_at) { Time.new(2017, 1, 1, 12, 00).utc }
+  let(:updated_at) { Time.new(2017, 1, 1, 12, 15).utc }
+  let(:note_body) { 'Hello' }
+  let(:file_path) { 'files/ruby/popen.rb' }
+
+  let(:diff_hunk) do
+    '@@ -14 +14 @@
     -Hello
     +Hello world'
   end
 
-  let(:note) do
+  let(:note_representation) do
     Gitlab::GithubImport::Representation::DiffNote.new(
       noteable_type: 'MergeRequest',
       noteable_id: 1,
       commit_id: '123abc',
       original_commit_id: 'original123abc',
-      file_path: 'README.md',
-      diff_hunk: hunk,
-      author: Gitlab::GithubImport::Representation::User
-        .new(id: user.id, login: user.username),
-      note: 'Hello',
+      file_path: file_path,
+      author: Gitlab::GithubImport::Representation::User.new(id: user.id, login: user.username),
+      note: note_body,
       created_at: created_at,
       updated_at: updated_at,
-      github_id: 1
+      start_line: nil,
+      end_line: 15,
+      github_id: 1,
+      diff_hunk: diff_hunk,
+      side: 'RIGHT'
     )
   end
 
-  let(:importer) { described_class.new(note, project, client) }
+  subject(:importer) { described_class.new(note_representation, project, client) }
+
+  shared_examples 'diff notes without suggestion' do
+    it 'imports the note as legacy diff note' do
+      stub_user_finder(user.id, true)
+
+      expect { subject.execute }
+        .to change(LegacyDiffNote, :count)
+        .by(1)
+
+      note = project.notes.diff_notes.take
+      expect(note).to be_valid
+      expect(note.author_id).to eq(user.id)
+      expect(note.commit_id).to eq('original123abc')
+      expect(note.created_at).to eq(created_at)
+      expect(note.diff).to be_an_instance_of(Gitlab::Git::Diff)
+      expect(note.discussion_id).to eq(discussion_id)
+      expect(note.line_code).to eq(note_representation.line_code)
+      expect(note.note).to eq('Hello')
+      expect(note.noteable_id).to eq(merge_request.id)
+      expect(note.noteable_type).to eq('MergeRequest')
+      expect(note.project_id).to eq(project.id)
+      expect(note.st_diff).to eq(note_representation.diff_hash)
+      expect(note.system).to eq(false)
+      expect(note.type).to eq('LegacyDiffNote')
+      expect(note.updated_at).to eq(updated_at)
+    end
+
+    it 'adds a "created by:" note when the author cannot be found' do
+      stub_user_finder(project.creator_id, false)
+
+      expect { subject.execute }
+        .to change(LegacyDiffNote, :count)
+        .by(1)
+
+      note = project.notes.diff_notes.take
+      expect(note).to be_valid
+      expect(note.author_id).to eq(project.creator_id)
+      expect(note.note).to eq("*Created by: #{user.username}*\n\nHello")
+    end
+
+    it 'does not import the note when a foreign key error is raised' do
+      stub_user_finder(project.creator_id, false)
+
+      expect(Gitlab::Database.main)
+        .to receive(:bulk_insert)
+        .and_raise(ActiveRecord::InvalidForeignKey, 'invalid foreign key')
+
+      expect { subject.execute }
+        .not_to change(LegacyDiffNote, :count)
+    end
+  end
 
   describe '#execute' do
     context 'when the merge request no longer exists' do
       it 'does not import anything' do
-        expect(Gitlab::Database.main).not_to receive(:bulk_insert)
-
-        importer.execute
+        expect { subject.execute }
+          .to not_change(DiffNote, :count)
+          .and not_change(LegacyDiffNote, :count)
       end
     end
 
     context 'when the merge request exists' do
-      let!(:merge_request) do
+      let_it_be(:merge_request) do
         create(:merge_request, source_project: project, target_project: project)
       end
 
       before do
-        allow(importer)
-          .to receive(:find_merge_request_id)
+        expect_next_instance_of(Gitlab::GithubImport::IssuableFinder) do |finder|
+          expect(finder)
+            .to receive(:database_id)
             .and_return(merge_request.id)
         end
 
-      it 'imports the note' do
-        allow(importer.user_finder)
-          .to receive(:author_id_for)
-          .and_return([user.id, true])
-
-        expect(Gitlab::Database.main)
-          .to receive(:bulk_insert)
-          .with(
-            LegacyDiffNote.table_name,
-            [
-              {
-                discussion_id: anything,
-                noteable_type: 'MergeRequest',
-                noteable_id: merge_request.id,
-                project_id: project.id,
-                author_id: user.id,
-                note: 'Hello',
-                system: false,
-                commit_id: 'original123abc',
-                line_code: note.line_code,
-                type: 'LegacyDiffNote',
-                created_at: created_at,
-                updated_at: updated_at,
-                st_diff: note.diff_hash.to_yaml
-              }
-            ]
-          )
-          .and_call_original
-
-        importer.execute
+        expect(Discussion)
+          .to receive(:discussion_id)
+          .and_return(discussion_id)
       end
 
-      it 'imports the note when the author could not be found' do
-        allow(importer.user_finder)
-          .to receive(:author_id_for)
-          .and_return([project.creator_id, false])
+      context 'when github_importer_use_diff_note_with_suggestions is disabled' do
+        before do
+          stub_feature_flags(github_importer_use_diff_note_with_suggestions: false)
+        end
 
-        expect(Gitlab::Database.main)
-          .to receive(:bulk_insert)
-          .with(
-            LegacyDiffNote.table_name,
-            [
-              {
-                discussion_id: anything,
-                noteable_type: 'MergeRequest',
-                noteable_id: merge_request.id,
-                project_id: project.id,
-                author_id: project.creator_id,
-                note: "*Created by: #{user.username}*\n\nHello",
-                system: false,
-                commit_id: 'original123abc',
-                line_code: note.line_code,
-                type: 'LegacyDiffNote',
-                created_at: created_at,
-                updated_at: updated_at,
-                st_diff: note.diff_hash.to_yaml
-              }
-            ]
-          )
-          .and_call_original
+        it_behaves_like 'diff notes without suggestion'
 
-        importer.execute
+        context 'when the note has suggestions' do
+          let(:note_body) do
+            <<~EOB
+            Suggestion:
+            ```suggestion
+            what do you think to do it like this
+            ```
+            EOB
           end
 
-      it 'produces a valid LegacyDiffNote' do
-        allow(importer.user_finder)
-          .to receive(:author_id_for)
-          .and_return([user.id, true])
+          it 'imports the note' do
+            stub_user_finder(user.id, true)
 
-        importer.execute
+            expect { subject.execute }
+              .to change(LegacyDiffNote, :count)
+              .and not_change(DiffNote, :count)
 
             note = project.notes.diff_notes.take
-
             expect(note).to be_valid
-        expect(note.diff).to be_an_instance_of(Gitlab::Git::Diff)
+            expect(note.note)
+              .to eq <<~NOTE
+              Suggestion:
+              ```suggestion:-0+0
+              what do you think to do it like this
+              ```
+              NOTE
+          end
+        end
       end
 
-      it 'does not import the note when a foreign key error is raised' do
-        allow(importer.user_finder)
-          .to receive(:author_id_for)
-          .and_return([project.creator_id, false])
+      context 'when github_importer_use_diff_note_with_suggestions is enabled' do
+        before do
+          stub_feature_flags(github_importer_use_diff_note_with_suggestions: true)
+        end
 
-        expect(Gitlab::Database.main)
-          .to receive(:bulk_insert)
-          .and_raise(ActiveRecord::InvalidForeignKey, 'invalid foreign key')
+        it_behaves_like 'diff notes without suggestion'
+
+        context 'when the note has suggestions' do
+          let(:note_body) do
+            <<~EOB
+            Suggestion:
+            ```suggestion
+            what do you think to do it like this
+            ```
+            EOB
+          end
+
+          it 'imports the note as diff note' do
+            stub_user_finder(user.id, true)
 
-        expect { importer.execute }.not_to raise_error
+            expect { subject.execute }
+              .to change(DiffNote, :count)
+              .by(1)
+
+            note = project.notes.diff_notes.take
+            expect(note).to be_valid
+            expect(note.noteable_type).to eq('MergeRequest')
+            expect(note.noteable_id).to eq(merge_request.id)
+            expect(note.project_id).to eq(project.id)
+            expect(note.author_id).to eq(user.id)
+            expect(note.system).to eq(false)
+            expect(note.discussion_id).to eq(discussion_id)
+            expect(note.commit_id).to eq('original123abc')
+            expect(note.line_code).to eq(note_representation.line_code)
+            expect(note.type).to eq('DiffNote')
+            expect(note.created_at).to eq(created_at)
+            expect(note.updated_at).to eq(updated_at)
+            expect(note.position.to_h).to eq({
+              base_sha: merge_request.diffs.diff_refs.base_sha,
+              head_sha: merge_request.diffs.diff_refs.head_sha,
+              start_sha: merge_request.diffs.diff_refs.start_sha,
+              new_line: 15,
+              old_line: nil,
+              new_path: file_path,
+              old_path: file_path,
+              position_type: 'text',
+              line_range: nil
+            })
+            expect(note.note)
+              .to eq <<~NOTE
+              Suggestion:
+              ```suggestion:-0+0
+              what do you think to do it like this
+              ```
+              NOTE
+          end
         end
       end
     end
-
-  describe '#find_merge_request_id' do
-    it 'returns a merge request ID' do
-      expect_next_instance_of(Gitlab::GithubImport::IssuableFinder) do |instance|
-        expect(instance).to receive(:database_id).and_return(10)
   end
 
-      expect(importer.find_merge_request_id).to eq(10)
+  def stub_user_finder(user, found)
+    expect_next_instance_of(Gitlab::GithubImport::UserFinder) do |finder|
+      expect(finder)
+        .to receive(:author_id_for)
+        .and_return([user, found])
     end
   end
 end

spec/lib/gitlab/github_import/importer/diff_notes_importer_spec.rb

@@ -20,6 +20,7 @@ RSpec.describe Gitlab::GithubImport::Importer::DiffNotesImporter do
       line: 23,
       start_line: nil,
       id: 1,
+      side: 'RIGHT',
       body: <<~BODY
         Hello World
 

spec/lib/gitlab/github_import/representation/diff_note_spec.rb

@@ -9,16 +9,21 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNote do
     +Hello world'
   end
 
+  let(:note_body) { 'Hello world' }
+  let(:start_line) { nil }
+  let(:end_line) { 23 }
+  let(:user_data) { { 'id' => 4, 'login' => 'alice' } }
+  let(:side) { 'RIGHT' }
   let(:created_at) { Time.new(2017, 1, 1, 12, 00) }
   let(:updated_at) { Time.new(2017, 1, 1, 12, 15) }
 
-  shared_examples 'a DiffNote' do
+  shared_examples 'a DiffNote representation' do
     it 'returns an instance of DiffNote' do
       expect(note).to be_an_instance_of(described_class)
     end
 
     context 'the returned DiffNote' do
-      it 'includes the number of the note' do
+      it 'includes the number of the merge request' do
         expect(note.noteable_id).to eq(42)
       end
 
@@ -30,18 +35,6 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNote do
         expect(note.commit_id).to eq('123abc')
       end
 
-      it 'includes the user details' do
-        expect(note.author)
-          .to be_an_instance_of(Gitlab::GithubImport::Representation::User)
-
-        expect(note.author.id).to eq(4)
-        expect(note.author.login).to eq('alice')
-      end
-
-      it 'includes the note body' do
-        expect(note.note).to eq('Hello world')
-      end
-
       it 'includes the created timestamp' do
         expect(note.created_at).to eq(created_at)
       end
@@ -57,203 +50,192 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNote do
       it 'returns the noteable type' do
         expect(note.noteable_type).to eq('MergeRequest')
       end
+
+      describe '#diff_hash' do
+        it 'returns a Hash containing the diff details' do
+          expect(note.diff_hash).to eq(
+            diff: hunk,
+            new_path: 'README.md',
+            old_path: 'README.md',
+            a_mode: '100644',
+            b_mode: '100644',
+            new_file: false
+          )
         end
       end
 
-  describe '.from_api_response' do
-    let(:response) do
-      double(
-        :response,
-        html_url: 'https://github.com/foo/bar/pull/42',
-        path: 'README.md',
-        commit_id: '123abc',
-        original_commit_id: 'original123abc',
-        diff_hunk: hunk,
-        user: double(:user, id: 4, login: 'alice'),
-        body: 'Hello world',
-        created_at: created_at,
-        updated_at: updated_at,
-        line: 23,
-        start_line: nil,
-        id: 1
+      describe '#diff_position' do
+        let(:diff_refs) { double(:refs, base_sha: 'base', start_sha: 'start', head_sha: 'head') }
+        let(:merge_request) { double(:merge_request, diff_refs: diff_refs) }
+
+        context 'when the diff is an addition' do
+          it 'returns a Gitlab::Diff::Position' do
+            expect(note.diff_position(merge_request).to_h).to eq(
+              base_sha: 'base',
+              head_sha: 'head',
+              line_range: nil,
+              new_line: 23,
+              new_path: 'README.md',
+              old_line: nil,
+              old_path: 'README.md',
+              position_type: 'text',
+              start_sha: 'start'
             )
           end
+        end
+
+        context 'when the diff is an deletion' do
+          let(:side) { 'LEFT' }
 
-    it_behaves_like 'a DiffNote' do
-      let(:note) { described_class.from_api_response(response) }
+          it 'returns a Gitlab::Diff::Position' do
+            expect(note.diff_position(merge_request).to_h).to eq(
+              base_sha: 'base',
+              head_sha: 'head',
+              line_range: nil,
+              old_line: 23,
+              new_path: 'README.md',
+              new_line: nil,
+              old_path: 'README.md',
+              position_type: 'text',
+              start_sha: 'start'
+            )
+          end
+        end
       end
 
-    it 'does not set the user if the response did not include a user' do
-      allow(response)
-        .to receive(:user)
-        .and_return(nil)
+      describe '#github_identifiers' do
+        it 'returns a hash with needed identifiers' do
+          expect(note.github_identifiers).to eq(
+            noteable_id: 42,
+            noteable_type: 'MergeRequest',
+            note_id: 1
+          )
+        end
+      end
 
-      note = described_class.from_api_response(response)
+      describe '#line_code' do
+        it 'generates the proper line code' do
+          note = described_class.new(diff_hunk: hunk, file_path: 'README.md')
 
-      expect(note.author).to be_nil
+          expect(note.line_code).to eq('8ec9a00bfd09b3190ac6b22251dbb1aa95a0579d_2_2')
+        end
+      end
+
+      describe '#note and #contains_suggestion?' do
+        it 'includes the note body' do
+          expect(note.note).to eq('Hello world')
+          expect(note.contains_suggestion?).to eq(false)
         end
 
-    it 'formats a suggestion in the note body' do
-      allow(response)
-        .to receive(:body)
-        .and_return <<~BODY
+        context 'when the note have a suggestion' do
+          let(:note_body) do
+            <<~BODY
             ```suggestion
             Hello World
             ```
             BODY
+          end
 
-      note = described_class.from_api_response(response)
-
+          it 'returns the suggestion formatted in the note' do
             expect(note.note).to eq <<~BODY
             ```suggestion:-0+0
             Hello World
             ```
             BODY
+            expect(note.contains_suggestion?).to eq(true)
           end
         end
 
-  describe '.from_json_hash' do
-    let(:hash) do
-      {
-        'noteable_type' => 'MergeRequest',
-        'noteable_id' => 42,
-        'file_path' => 'README.md',
-        'commit_id' => '123abc',
-        'original_commit_id' => 'original123abc',
-        'diff_hunk' => hunk,
-        'author' => { 'id' => 4, 'login' => 'alice' },
-        'note' => 'Hello world',
-        'created_at' => created_at.to_s,
-        'updated_at' => updated_at.to_s,
-        'note_id' => 1
-      }
-    end
-
-    it_behaves_like 'a DiffNote' do
-      let(:note) { described_class.from_json_hash(hash) }
-    end
-
-    it 'does not convert the author if it was not specified' do
-      hash.delete('author')
-
-      note = described_class.from_json_hash(hash)
-
-      expect(note.author).to be_nil
-    end
-
-    it 'formats a suggestion in the note body' do
-      hash['note'] = <<~BODY
+        context 'when the note have a multiline suggestion' do
+          let(:start_line) { 20 }
+          let(:end_line) { 23 }
+          let(:note_body) do
+            <<~BODY
             ```suggestion
             Hello World
             ```
             BODY
+          end
 
-      note = described_class.from_json_hash(hash)
-
+          it 'returns the multi-line suggestion formatted in the note' do
             expect(note.note).to eq <<~BODY
-      ```suggestion:-0+0
+            ```suggestion:-3+0
             Hello World
             ```
             BODY
+            expect(note.contains_suggestion?).to eq(true)
           end
         end
 
-  describe '#line_code' do
-    it 'returns a String' do
-      note = described_class.new(diff_hunk: hunk, file_path: 'README.md')
+        describe '#author' do
+          it 'includes the user details' do
+            expect(note.author).to be_an_instance_of(
+              Gitlab::GithubImport::Representation::User
+            )
 
-      expect(note.line_code).to be_an_instance_of(String)
-    end
+            expect(note.author.id).to eq(4)
+            expect(note.author.login).to eq('alice')
           end
 
-  describe '#diff_hash' do
-    it 'returns a Hash containing the diff details' do
-      note = described_class.from_json_hash(
-        'noteable_type' => 'MergeRequest',
-        'noteable_id' => 42,
-        'file_path' => 'README.md',
-        'commit_id' => '123abc',
-        'original_commit_id' => 'original123abc',
-        'diff_hunk' => hunk,
-        'author' => { 'id' => 4, 'login' => 'alice' },
-        'note' => 'Hello world',
-        'created_at' => created_at.to_s,
-        'updated_at' => updated_at.to_s,
-        'note_id' => 1
-      )
+          context 'when the author is empty' do
+            let(:user_data) { nil }
 
-      expect(note.diff_hash).to eq(
-        diff: hunk,
-        new_path: 'README.md',
-        old_path: 'README.md',
-        a_mode: '100644',
-        b_mode: '100644',
-        new_file: false
-      )
+            it 'does not set the user if the response did not include a user' do
+              expect(note.author).to be_nil
+            end
           end
         end
-
-  describe '#github_identifiers' do
-    it 'returns a hash with needed identifiers' do
-      github_identifiers = {
-        noteable_id: 42,
-        noteable_type: 'MergeRequest',
-        note_id: 1
-      }
-      other_attributes = { something_else: '_something_else_' }
-      note = described_class.new(github_identifiers.merge(other_attributes))
-
-      expect(note.github_identifiers).to eq(github_identifiers)
       end
     end
-
-  describe '#note' do
-    it 'returns the given note' do
-      hash = {
-        'note': 'simple text'
-      }
-
-      note = described_class.new(hash)
-
-      expect(note.note).to eq 'simple text'
   end
 
-    it 'returns the suggestion formatted in the note' do
-      hash = {
-        'note': <<~BODY
-        ```suggestion
-        Hello World
-        ```
-        BODY
-      }
-
-      note = described_class.new(hash)
+  describe '.from_api_response' do
+    it_behaves_like 'a DiffNote representation' do
+      let(:response) do
+        double(
+          :response,
+          id: 1,
+          html_url: 'https://github.com/foo/bar/pull/42',
+          path: 'README.md',
+          commit_id: '123abc',
+          original_commit_id: 'original123abc',
+          side: side,
+          user: user_data && double(:user, user_data),
+          diff_hunk: hunk,
+          body: note_body,
+          created_at: created_at,
+          updated_at: updated_at,
+          line: end_line,
+          start_line: start_line
+        )
+      end
 
-      expect(note.note).to eq <<~BODY
-      ```suggestion:-0+0
-      Hello World
-      ```
-      BODY
+      subject(:note) { described_class.from_api_response(response) }
+    end
   end
 
-    it 'returns the multi-line suggestion formatted in the note' do
-      hash = {
-        'start_line': 20,
-        'end_line': 23,
-        'note': <<~BODY
-        ```suggestion
-        Hello World
-        ```
-        BODY
+  describe '.from_json_hash' do
+    it_behaves_like 'a DiffNote representation' do
+      let(:hash) do
+        {
+          'note_id' => 1,
+          'noteable_type' => 'MergeRequest',
+          'noteable_id' => 42,
+          'file_path' => 'README.md',
+          'commit_id' => '123abc',
+          'original_commit_id' => 'original123abc',
+          'side' => side,
+          'author' => user_data,
+          'diff_hunk' => hunk,
+          'note' => note_body,
+          'created_at' => created_at.to_s,
+          'updated_at' => updated_at.to_s,
+          'end_line' => end_line,
+          'start_line' => start_line
         }
+      end
 
-      note = described_class.new(hash)
-
-      expect(note.note).to eq <<~BODY
-      ```suggestion:-3+0
-      Hello World
-      ```
-      BODY
+      subject(:note) { described_class.from_json_hash(hash) }
     end
   end
 end

spec/lib/gitlab/github_import/representation/diff_notes/suggestion_formatter_spec.rb

@@ -9,13 +9,19 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
     ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(note)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(note)
+    expect(note_formatter.contains_suggestion?).to eq(false)
   end
 
   it 'handles nil value for note' do
     note = nil
 
-    expect(described_class.formatted_note_for(note: note)).to eq(note)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(note)
+    expect(note_formatter.contains_suggestion?).to eq(false)
   end
 
   it 'does not allow over 3 leading spaces for valid suggestion' do
@@ -26,7 +32,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(note)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(note)
+    expect(note_formatter.contains_suggestion?).to eq(false)
   end
 
   it 'allows up to 3 leading spaces' do
@@ -44,7 +53,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(expected)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 
   it 'does nothing when there is any text without space after the suggestion tag' do
@@ -53,7 +65,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
     ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(note)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(note)
+    expect(note_formatter.contains_suggestion?).to eq(false)
   end
 
   it 'formats single-line suggestions' do
@@ -71,7 +86,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(expected)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 
   it 'ignores text after suggestion tag on the same line' do
@@ -89,7 +107,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
     ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(expected)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 
   it 'formats multiple single-line suggestions' do
@@ -115,7 +136,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note)).to eq(expected)
+    note_formatter = described_class.new(note: note)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 
   it 'formats multi-line suggestions' do
@@ -133,7 +157,10 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note, start_line: 6, end_line: 8)).to eq(expected)
+    note_formatter = described_class.new(note: note, start_line: 6, end_line: 8)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 
   it 'formats multiple multi-line suggestions' do
@@ -159,6 +186,9 @@ RSpec.describe Gitlab::GithubImport::Representation::DiffNotes::SuggestionFormat
       ```
     BODY
 
-    expect(described_class.formatted_note_for(note: note, start_line: 6, end_line: 8)).to eq(expected)
+    note_formatter = described_class.new(note: note, start_line: 6, end_line: 8)
+
+    expect(note_formatter.formatted_note).to eq(expected)
+    expect(note_formatter.contains_suggestion?).to eq(true)
   end
 end

spec/services/import/github/notes/create_service_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Import::Github::Notes::CreateService do
+  it 'does not support quick actions' do
+    project = create(:project, :repository)
+    user = create(:user)
+    merge_request = create(:merge_request, source_project: project)
+
+    project.add_maintainer(user)
+
+    note = described_class.new(
+      project,
+      user,
+      note: '/close',
+      noteable_type: 'MergeRequest',
+      noteable_id: merge_request.id
+    ).execute
+
+    expect(note.note).to eq('/close')
+    expect(note.noteable.closed?).to be(false)
+  end
+end