Add backtrace to expection 500 responses

Author: Geoff Massanek

app/api/v1/presenters/error_presenter.rb

@@ -23,11 +23,13 @@ def present
           private
 
           def present_string_message(message)
-            {
+            data = {
               code: code,
               description: description,
               message: message
             }
+            data[:backtrace] = self.error.backtrace if self.error.respond_to?(:backtrace)
+            data
           end
 
           def present_hash_message(message)

spec/api/v1/gurus_spec.rb

@@ -65,6 +65,7 @@ def create_guru(explicit_params = {})
       expect(guru_response[:id]).to eq(guru.id)
       expect(guru_response[:username]).to eq(user_name)
     end
+
     it "returns 404 when guru is not present" do
       get("gurus_api/v1/gurus/noname")
 
@@ -113,6 +114,17 @@ def create_guru_with_followers(followers_count)
       expect(response_json[:gurus].second[:id]).to eq(guru3.id)
       expect(response_json[:gurus].last[:id]).to eq(guru1.id)
     end
+
+    it "error handling" do
+      allow(Guru).to receive(:all).and_raise(StandardError.new)
+      get("gurus_api/v1/gurus")
+
+      expect(last_response.status).to eq(500)
+      expect(response_json[:errors].count).to be(1)
+      expect(response_json[:errors][0][:code]).to be
+      expect(response_json[:errors][0][:description]).to be
+      expect(response_json[:errors][0][:backtrace]).to be
+    end
   end
 
   describe "POST /", :authenticated_user do