Refactor unittests

tests/compiler/dart2js/serialization_analysis_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_analysis_test;
-
-import 'dart:async';
-import 'package:async_helper/async_helper.dart';
-import 'package:expect/expect.dart';
-import 'package:compiler/src/commandline_options.dart';
-import 'package:compiler/src/common/backend_api.dart';
-import 'package:compiler/src/common/names.dart';
-import 'package:compiler/src/compiler.dart';
-import 'package:compiler/src/filenames.dart';
-import 'memory_compiler.dart';
-import 'serialization_helper.dart';
-import 'serialization_test_data.dart';
-
-main(List<String> arguments) {
-  asyncTest(() async {
-    String serializedData = await serializeDartCore();
-
-    if (arguments.isNotEmpty) {
-      Uri entryPoint = Uri.base.resolve(nativeToUriPath(arguments.last));
-      await analyze(serializedData, entryPoint, null);
-    } else {
-      Uri entryPoint = Uri.parse('memory:main.dart');
-      for (Test test in TESTS) {
-        await analyze(serializedData, entryPoint, test);
-      }
-    }
-  });
-}
-
-Future analyze(String serializedData, Uri entryPoint, Test test) async {
-  DiagnosticCollector diagnosticCollector = new DiagnosticCollector();
-  await runCompiler(
-      entryPoint: entryPoint,
-      memorySourceFiles: test != null ? test.sourceFiles : const {},
-      options: [Flags.analyzeOnly],
-      diagnosticHandler: diagnosticCollector,
-      beforeRun: (Compiler compiler) {
-        deserialize(compiler, serializedData);
-      });
-  if (test != null) {
-    Expect.equals(test.expectedErrorCount, diagnosticCollector.errors.length,
-        "Unexpected error count.");
-    Expect.equals(
-        test.expectedWarningCount,
-        diagnosticCollector.warnings.length,
-        "Unexpected warning count.");
-    Expect.equals(test.expectedHintCount, diagnosticCollector.hints.length,
-        "Unexpected hint count.");
-    Expect.equals(test.expectedInfoCount, diagnosticCollector.infos.length,
-        "Unexpected info count.");
-  }
-}
-