Test for LibraryElement.hasExtUri resynth.

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

Index: pkg/analyzer/test/src/summary/resynthesize_test.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_test.dart b/pkg/analyzer/test/src/summary/resynthesize_test.dart
index df83138a36e0d64f82ef8c59239228ecff267cca..c27b507966ad4b9aa95a6e4f46393425ad423045 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_test.dart
@@ -49,6 +49,7 @@ class ResynthTest extends ResolverTestCase {
     expect(resynthesized.displayName, original.displayName);
     expect(original.enclosingElement, isNull);
     expect(resynthesized.enclosingElement, isNull);
+    expect(resynthesized.hasExtUri, original.hasExtUri);
     compareCompilationUnitElements(resynthesized.definingCompilationUnit,
         original.definingCompilationUnit);
     expect(resynthesized.parts.length, original.parts.length);
@@ -486,6 +487,10 @@ class ResynthTest extends ResolverTestCase {
     // TODO(paulberry): test initializer
   }
 
+  fail_library_hasExtUri() {
+    checkLibrary('import "dart-ext:doesNotExist.dart";');
+  }
+
   LibraryElementImpl resynthesizeLibrary(
       Source source, LibraryElementImpl original, bool allowErrors,
       {int resynthesisCount: 1}) {