1 files changed, 27 insertions, 0 deletions
diff --git a/spec/requests/api/merge_requests_spec.rb b/spec/requests/api/merge_requests_spec.rb
index 3ecf3eea5f5..1fe77cb0ffb 100644
--- a/spec/requests/api/merge_requests_spec.rb
+++ b/spec/requests/api/merge_requests_spec.rb
@@ -601,6 +601,15 @@ describe API::API, api: true  do
       expect(json_response.first['title']).to eq(issue.title)
       expect(json_response.first['id']).to eq(issue.id)
     end
+
+    it 'returns 403 if the user has no access to the merge request' do
+      guest = create(:user)
+      project.team << [guest, :guest]
+
+      get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/closes_issues", guest)
+
+      expect(response).to have_http_status(403)
+    end
   end
 
   describe 'POST :id/merge_requests/:merge_request_id/subscription' do
@@ -622,6 +631,15 @@ describe API::API, api: true  do
 
       expect(response).to have_http_status(404)
     end
+
+    it 'returns 403 if user has no access to read code' do
+      guest = create(:user)
+      project.team << [guest, :guest]
+
+      post api("/projects/#{project.id}/merge_requests/#{merge_request.id}/subscription", guest)
+
+      expect(response).to have_http_status(403)
+    end
   end
 
   describe 'DELETE :id/merge_requests/:merge_request_id/subscription' do
@@ -643,6 +661,15 @@ describe API::API, api: true  do
 
       expect(response).to have_http_status(404)
     end
+
+    it 'returns 403 if user has no access to read code' do
+      guest = create(:user)
+      project.team << [guest, :guest]
+
+      delete api("/projects/#{project.id}/merge_requests/#{merge_request.id}/subscription", guest)
+
+      expect(response).to have_http_status(403)
+    end
   end
 
   def mr_with_later_created_and_updated_at_time