Suppress follow-on errors when a file is imported with either a prefix or a show clause

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

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.src.serialization.elements_test;
 
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
@@ skipping 89 matching lines @@
     expect(resynthesized.hasExtUri, original.hasExtUri);
     compareCompilationUnitElements(resynthesized.definingCompilationUnit,
         original.definingCompilationUnit);
     expect(resynthesized.parts.length, original.parts.length, reason: 'parts');
     for (int i = 0; i < resynthesized.parts.length; i++) {
       compareCompilationUnitElements(resynthesized.parts[i], original.parts[i]);
     }
     expect(resynthesized.imports.length, original.imports.length,
         reason: 'imports');
     for (int i = 0; i < resynthesized.imports.length; i++) {
-      compareImportElements(resynthesized.imports[i], original.imports[i],
-          'import ${original.imports[i].uri}');
+      ImportElement originalImport = original.imports[i];
+      compareImportElements(
+          resynthesized.imports[i], originalImport, originalImport.toString());
     }
     expect(resynthesized.exports.length, original.exports.length,
         reason: 'exports');
     for (int i = 0; i < resynthesized.exports.length; i++) {
-      compareExportElements(resynthesized.exports[i], original.exports[i],
-          'export ${original.exports[i].uri}');
+      ExportElement originalExport = original.exports[i];
+      compareExportElements(
+          resynthesized.exports[i], originalExport, originalExport.toString());
     }
     expect(resynthesized.nameLength, original.nameLength);
     compareNamespaces(resynthesized.publicNamespace, original.publicNamespace,
         '(public namespace)');
     compareNamespaces(resynthesized.exportNamespace, original.exportNamespace,
         '(export namespace)');
     if (original.entryPoint == null) {
       expect(resynthesized.entryPoint, isNull);
     } else {
       expect(resynthesized.entryPoint, isNotNull);
@@ skipping 1029 matching lines @@
     Map<String, UnlinkedUnit> unlinkedSummaries = <String, UnlinkedUnit>{};
     LinkedLibrary getLinkedSummaryFor(LibraryElement lib) {
       LibrarySerializationResult serialized = serializeLibrary(
           lib, context.typeProvider, context.analysisOptions.strongMode);
       for (int i = 0; i < serialized.unlinkedUnits.length; i++) {
         unlinkedSummaries[serialized.unitUris[i]] =
             new UnlinkedUnit.fromBuffer(serialized.unlinkedUnits[i].toBuffer());
       }
       return new LinkedLibrary.fromBuffer(serialized.linked.toBuffer());
     }
+
     Map<String, LinkedLibrary> linkedSummaries = <String, LinkedLibrary>{
       library.source.uri.toString(): getLinkedSummaryFor(library)
     };
     for (Source source in otherLibrarySources) {
       LibraryElement original = context.computeLibraryElement(source);
       String uri = source.uri.toString();
       linkedSummaries[uri] = getLinkedSummaryFor(original);
     }
     if (dumpSummaries) {
       unlinkedSummaries.forEach((String path, UnlinkedUnit unit) {
@@ skipping 144 matching lines @@
         return element.isSetter;
       }
       return false;
     } else if (modifier == Modifier.STATIC) {
       if (element is ExecutableElement) {
         return element.isStatic;
       }
       return false;
     } else if (modifier == Modifier.SYNTHETIC) {
       return element.isSynthetic;
+    } else if (modifier == Modifier.URI_EXISTS) {
+      if (element is ExportElement) {
+        return element.uriExists;
+      } else if (element is ImportElement) {
+        return element.uriExists;
+      }
+      return false;
     }
     throw new UnimplementedError(
         'Modifier $modifier for ${element?.runtimeType}');
   }
 }
 
 @reflectiveTest
 class ResynthesizeElementTest extends ResynthesizeTest {
   @override
   LibraryElementImpl checkLibrary(String text,
@@ skipping 46 matching lines @@
     Map<String, UnlinkedUnit> unlinkedSummaries = <String, UnlinkedUnit>{};
     LinkedLibrary getLinkedSummaryFor(LibraryElement lib) {
       LibrarySerializationResult serialized = serializeLibrary(
           lib, context.typeProvider, context.analysisOptions.strongMode);
       for (int i = 0; i < serialized.unlinkedUnits.length; i++) {
         unlinkedSummaries[serialized.unitUris[i]] =
             new UnlinkedUnit.fromBuffer(serialized.unlinkedUnits[i].toBuffer());
       }
       return new LinkedLibrary.fromBuffer(serialized.linked.toBuffer());
     }
+
     Map<String, LinkedLibrary> linkedSummaries = <String, LinkedLibrary>{
       library.source.uri.toString(): getLinkedSummaryFor(library)
     };
     for (Source source in otherLibrarySources) {
       LibraryElement original = context.computeLibraryElement(source);
       String uri = source.uri.toString();
       linkedSummaries[uri] = getLinkedSummaryFor(original);
     }
     if (dumpSummaries) {
       unlinkedSummaries.forEach((String path, UnlinkedUnit unit) {
@@ skipping 3206 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }