Add a LoadSuite class.

test/runner/expanded_reporter_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.
 
 @TestOn("vm")
 
 import 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:test/src/util/io.dart';
 import 'package:test/test.dart';
 
 import '../io.dart';
 
 void main() {
   test("reports when no tests are run", () {
     return withTempDir((path) {
       new File(p.join(path, "test.dart")).writeAsStringSync("void main() {}");
       var result = runTest(["-r", "expanded", "test.dart"],
           workingDirectory: path);
-      expect(result.stdout, equals("No tests ran.\n"));
+      expect(result.stdout, contains("No tests ran."));
     });
   });
 
   test("runs several successful tests and reports when each completes", () {
     _expectReport("""
         test('success 1', () {});
         test('success 2', () {});
         test('success 3', () {});""",
         """
         +0: success 1
@@ skipping 298 matching lines @@
     // Un-indent the expected string.
     var indentation = expected.indexOf(new RegExp("[^ ]"));
     expected = expected.split("\n").map((line) {
       if (line.isEmpty) return line;
       return line.substring(indentation);
     }).join("\n");
 
     expect(actual, equals(expected));
   }), completes);
 }