expose InSummarySource with its summaryPath

pkg/analyzer/test/src/summary/test_all.dart

Index: pkg/analyzer/test/src/summary/test_all.dart
diff --git a/pkg/analyzer/test/src/summary/test_all.dart b/pkg/analyzer/test/src/summary/test_all.dart
index 08af93d7644aefac62fbe084522a65571efb3c07..84e566037c5bf905b46e130591abaed926a2e80a 100644
--- a/pkg/analyzer/test/src/summary/test_all.dart
+++ b/pkg/analyzer/test/src/summary/test_all.dart
@@ -8,6 +8,7 @@ import 'package:unittest/unittest.dart';
 
 import '../../utils.dart';
 import 'flat_buffers_test.dart' as flat_buffers_test;
+import 'in_summary_source_test.dart' as in_summary_source_test;
 import 'incremental_cache_test.dart' as incremental_cache_test;
 import 'index_unit_test.dart' as index_unit_test;
 import 'name_filter_test.dart' as name_filter_test;
@@ -23,6 +24,7 @@ main() {
   initializeTestEnvironment();
   group('summary tests', () {
     flat_buffers_test.main();
+    in_summary_source_test.main();
     incremental_cache_test.main();
     index_unit_test.main();
     name_filter_test.main();