Add an integration test for analysis.occurrences.

pkg/analysis_server/test/integration/analysis/test_all.dart

Index: pkg/analysis_server/test/integration/analysis/test_all.dart
diff --git a/pkg/analysis_server/test/integration/analysis/test_all.dart b/pkg/analysis_server/test/integration/analysis/test_all.dart
index 3a59583d6721299aa30a7bcf8541edc73ccfc210..9c0b4ed6360b06b865b2ee4c3a06121ebb7b540e 100644
--- a/pkg/analysis_server/test/integration/analysis/test_all.dart
+++ b/pkg/analysis_server/test/integration/analysis/test_all.dart
@@ -12,6 +12,7 @@ import 'get_errors_before_analysis_test.dart' as get_errors_before_analysis_test
 import 'get_hover_test.dart' as get_hover_test;
 import 'highlights_test.dart' as highlights_test;
 import 'navigation_test.dart' as navigation_test;
+import 'occurrences_test.dart' as occurrences_test;
 import 'update_content_test.dart' as update_content_test;
 import 'update_content_list_test.dart' as update_content_list_test;
 
@@ -27,6 +28,7 @@ main() {
     get_hover_test.main();
     highlights_test.main();
     navigation_test.main();
+    occurrences_test.main();
     update_content_test.main();
     update_content_list_test.main();
   });