upgrade dependencies, including migration to package:test

test/checker/self_host_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.
 
 /// Tests that run the checker end-to-end using the file system.
 library dev_compiler.test.end_to_end;
 
 import 'dart:io';
 import 'package:cli_util/cli_util.dart' show getSdkDir;
 import 'package:dev_compiler/devc.dart' show Compiler;
 import 'package:dev_compiler/src/options.dart';
 import 'package:path/path.dart' as path;
-import 'package:unittest/unittest.dart';
+import 'package:test/test.dart';
+import '../test_util.dart' show testDirectory;
 
-import '../test_util.dart';
-
-void main(args) {
-  configureTest();
-
-  var testDir = path.absolute(path.dirname(Platform.script.path));
-
+void main() {
   test('checker can run on itself ', () {
     var options = new CompilerOptions(
-        entryPointFile: '$testDir/../all_tests.dart',
-        dartSdkPath: getSdkDir(args).path);
+        entryPointFile: '$testDirectory/all_tests.dart',
+        dartSdkPath: getSdkDir().path);
     new Compiler(options).run();
   });
 }