Fix errors

Author: esrakartalOpt

spec/event_builder_spec.rb

@@ -39,10 +39,9 @@
     allow(Time).to receive(:now).and_return(time_now)
     allow(SecureRandom).to receive(:uuid).and_return('a68cf1ad-0393-4e18-af87-efe8f01a7c9c')
 
-    @expected_endpoints = {
-      US: 'https://logx.optimizely.com/v1/events',
-      EU: 'https://eu.logx.optimizely.com/v1/events'
-    }
+    @expected_endpoints = {}
+    @expected_endpoints[:US] = 'https://logx.optimizely.com/v1/events'
+    @expected_endpoints[:EU] = 'https://eu.logx.optimizely.com/v1/events'
     @expected_impression_params = {
       account_id: '12001',
       project_id: '111001',