1 files changed, 60 insertions, 0 deletions
diff --git a/spec/graphql/mutations/notes/reposition_image_diff_note_spec.rb b/spec/graphql/mutations/notes/reposition_image_diff_note_spec.rb
new file mode 100644
index 00000000000..8c22e1a1cb6
--- /dev/null
+++ b/spec/graphql/mutations/notes/reposition_image_diff_note_spec.rb
@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Notes::RepositionImageDiffNote do
+  include GraphqlHelpers
+
+  describe '#resolve' do
+    subject do
+      mutation.resolve({ note: note, position: new_position })
+    end
+
+    let_it_be(:noteable) { create(:merge_request) }
+    let_it_be(:project) { noteable.project }
+    let(:note) { create(:image_diff_note_on_merge_request, noteable: noteable, project: project) }
+
+    let(:mutation) do
+      described_class.new(object: nil, context: { current_user: user }, field: nil)
+    end
+
+    let(:new_position) do
+      { x: 10, y: 11, width: 12, height: 13 }
+    end
+
+    context 'when the user does not have permission' do
+      let(:user) { nil }
+
+      it 'raises an error if the resource is not accessible to the user' do
+        expect { subject }.to raise_error(
+          Gitlab::Graphql::Errors::ResourceNotAvailable,
+          "The resource that you are attempting to access does not exist or you don't have permission to perform this action"
+        )
+      end
+    end
+
+    context 'when the user has permission' do
+      let(:user) { project.creator }
+      let(:mutated_note) { subject[:note] }
+      let(:errors) { subject[:errors] }
+
+      it 'mutates the note', :aggregate_failures do
+        expect { subject }.to change { note.reset.position.to_h }.to(include(new_position))
+
+        expect(mutated_note).to eq(note)
+        expect(errors).to be_empty
+      end
+
+      context 'when the note is a DiffNote, but not on an image' do
+        let(:note) { create(:diff_note_on_merge_request, noteable: noteable, project: project) }
+
+        it 'raises an error' do
+          expect { subject }.to raise_error(
+            Gitlab::Graphql::Errors::ResourceNotAvailable,
+            'Resource is not an ImageDiffNote'
+          )
+        end
+      end
+    end
+  end
+end