Use NotesFinder to fetch notes on API and Controllers

Fix missing iid query on NotesFinder

Changed parameters of find_noteable, 
so changes across a few files were needed.
MergeRequest also requires iid instead of id query

Make NotesFinder fail with RecordNotFound again

Add specs for target_iid

Using RSpec tablesyntax for target_iid specs

Revert "Using RSpec tablesyntax for target_iid specs"

This reverts commit ba45c7f569a.

Allow find_by! here

Fix variable name

Add readable check

Revert "Add readable check"

This reverts commit 9e3a1a7aa39.

Remove unnecessary assignment

Add required changes for EE

Fix parameter count

Reduce code duplication by extracting a noteable module method

The call to find_noteable was redundant so
multiple files and lines have changed in that
commit to use the newly introduced module
method `noteable`.

Replace casecmp with include check

Add parent_type parameter


Revert "Reduce code duplication by extracting
a noteable module method"

This reverts commit 8c0923babff16.

Method is no longer needed

Check whether noteable can be read by user

1 files changed, 26 insertions, 0 deletions

diff --git a/spec/finders/notes_finder_spec.rb b/spec/finders/notes_finder_spec.rb
index 0a685152cf9..87bde4ca2f6 100644
--- a/spec/finders/notes_finder_spec.rb
+++ b/spec/finders/notes_finder_spec.rb
@@ -292,5 +292,31 @@ describe NotesFinder do
         expect(subject.target).to eq(commit)
       end
     end
+
+    context 'target_iid' do
+      let(:issue) { create(:issue, project: project) }
+      let(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
+
+      it 'finds issues by iid' do
+        iid_params = { target_type: 'issue', target_iid: issue.iid }
+        expect(described_class.new(project, user, iid_params).target).to eq(issue)
+      end
+
+      it 'finds merge requests by iid' do
+        iid_params = { target_type: 'merge_request', target_iid: merge_request.iid }
+        expect(described_class.new(project, user, iid_params).target).to eq(merge_request)
+      end
+
+      it 'returns nil if both target_id and target_iid are not given' do
+        params_without_any_id = { target_type: 'issue' }
+        expect(described_class.new(project, user, params_without_any_id).target).to be_nil
+      end
+
+      it 'prioritizes target_id over target_iid' do
+        issue2 = create(:issue, project: project)
+        iid_params = { target_type: 'issue', target_id: issue2.id, target_iid: issue.iid }
+        expect(described_class.new(project, user, iid_params).target).to eq(issue2)
+      end
+    end
   end
 end