Compute both strong and spec mode unlinked bundles.

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

Index: pkg/analyzer/test/src/summary/pub_summary_test.dart
diff --git a/pkg/analyzer/test/src/summary/pub_summary_test.dart b/pkg/analyzer/test/src/summary/pub_summary_test.dart
index acc22cce95dc8fd6ed09f2f3c41f2797105ecdd4..1363fa325376fe430365d778e17128ec3b4fe80b 100644
--- a/pkg/analyzer/test/src/summary/pub_summary_test.dart
+++ b/pkg/analyzer/test/src/summary/pub_summary_test.dart
@@ -180,10 +180,10 @@ class B {}
     }
 
     // The files must be created.
-    File fileA = libFolderA.parent.getChildAssumingFile('unlinked.ds');
-    File fileB = libFolderB.parent.getChildAssumingFile('unlinked.ds');
-    expect(fileA.exists, isTrue);
-    expect(fileB.exists, isTrue);
+    _assertFileExists(libFolderA.parent, PubSummaryManager.UNLINKED_NAME);
+    _assertFileExists(libFolderA.parent, PubSummaryManager.UNLINKED_SPEC_NAME);
+    _assertFileExists(libFolderB.parent, PubSummaryManager.UNLINKED_NAME);
+    _assertFileExists(libFolderB.parent, PubSummaryManager.UNLINKED_SPEC_NAME);
   }
 
   test_getUnlinkedBundles_nullPackageMap() async {
@@ -220,6 +220,10 @@ class B {}
         isFalse);
   }
 
+  void _assertFileExists(Folder folder, String fileName) {
+    expect(folder.getChildAssumingFile(fileName).exists, isTrue);
+  }
+
   void _assertLinkedNameReference(
       UnlinkedUnit unlinkedUnit,
       LinkedLibrary linkedLibrary,