Support multiple resolution inputs from command line.

tests/compiler/dart2js/serialization/equivalence_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 dart2js.serialization_test;
 
 import 'dart:io';
 import '../memory_compiler.dart';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/commandline_options.dart';
+import 'package:compiler/src/common.dart';
 import 'package:compiler/src/constants/constructors.dart';
 import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/diagnostics/invariant.dart';
 import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/elements/visitor.dart';
 import 'package:compiler/src/ordered_typeset.dart';
 import 'package:compiler/src/serialization/element_serialization.dart';
 import 'package:compiler/src/serialization/equivalence.dart';
 import 'package:compiler/src/serialization/json_serializer.dart';
 import 'package:compiler/src/serialization/serialization.dart';
+import 'package:expect/expect.dart';
 import 'test_helper.dart';
 
 main(List<String> arguments) {
   // Ensure that we can print out constant expressions.
   DEBUG_MODE = true;
 
   Uri entryPoint;
   String outPath;
   bool prettyPrint = false;
   for (String arg in arguments) {
@@ skipping 13 matching lines @@
     }
   }
   if (entryPoint == null) {
     entryPoint = Uri.parse('dart:core');
   }
   asyncTest(() async {
     CompilationResult result = await runCompiler(
         entryPoint: entryPoint, options: [Flags.analyzeAll]);
     Compiler compiler = result.compiler;
     testSerialization(compiler.libraryLoader.libraries,
+                      compiler.reporter,
                       outPath: outPath,
                       prettyPrint: prettyPrint);
+    Expect.isFalse(compiler.reporter.hasReportedError,
+        "Unexpected errors occured.");
   });
 }
 
-void testSerialization(Iterable<LibraryElement> libraries1,
-                       {String outPath,
-                        bool prettyPrint}) {
+void testSerialization(
+    Iterable<LibraryElement> libraries1,
+    DiagnosticReporter reporter,
+    {String outPath,
+     bool prettyPrint}) {
   Serializer serializer = new Serializer();
   for (LibraryElement library1 in libraries1) {
     serializer.serialize(library1);
   }
   String text = serializer.toText(const JsonSerializationEncoder());
   String outText = text;
   if (prettyPrint) {
     outText = serializer.prettyPrint();
   }
   if (outPath != null) {
     new File(outPath).writeAsStringSync(outText);
   } else if (prettyPrint) {
     print(outText);
   }
 
   Deserializer deserializer = new Deserializer.fromText(
-      new DeserializationContext(),
+      new DeserializationContext(reporter), Uri.parse('out1.data'),
       text, const JsonSerializationDecoder());
   List<LibraryElement> libraries2 = <LibraryElement>[];
   for (LibraryElement library1 in libraries1) {
     LibraryElement library2 =
         deserializer.lookupLibrary(library1.canonicalUri);
     if (library2 == null) {
       throw new ArgumentError('No library ${library1.canonicalUri} found.');
     }
     checkLibraryContent('library1', 'library2', 'library', library1, library2);
     libraries2.add(library2);
   }
 
   Serializer serializer2 = new Serializer();
   for (LibraryElement library2 in libraries2) {
     serializer2.serialize(library2);
   }
   String text2 = serializer2.toText(const JsonSerializationEncoder());
 
   Deserializer deserializer3 = new Deserializer.fromText(
-      new DeserializationContext(),
+      new DeserializationContext(reporter), Uri.parse('out2.data'),
       text2, const JsonSerializationDecoder());
   for (LibraryElement library1 in libraries1) {
     LibraryElement library2 =
         deserializer.lookupLibrary(library1.canonicalUri);
     if (library2 == null) {
       throw new ArgumentError('No library ${library1.canonicalUri} found.');
     }
     LibraryElement library3 =
         deserializer3.lookupLibrary(library1.canonicalUri);
     if (library3 == null) {
@@ skipping 585 matching lines @@
   void visitPrefixElement(PrefixElement element1, PrefixElement element2) {
     check(
         element1, element2, 'isDeferred',
         element1.isDeferred, element2.isDeferred);
     checkElementIdentities(
         element1, element2, 'importedLibrary',
         element1.deferredImport, element2.deferredImport);
     // TODO(johnniwinther): Check members.
   }
 }