Make pathos run in the browser.

pkg/pathos/test/pathos_dart2js_test.dart

+// Copyright (c) 2013, 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.
+
+import 'package:unittest/unittest.dart';
+import 'package:pathos/path.dart' as path;
+
+// In the future, the default root will be window.location.href, but right now
+// that's not possible.
+
+main() {
+  group('new Builder()', () {
+    test('uses the current working directory if root is omitted', () {
+      var builder = new path.Builder();
+      expect(builder.root, '.');
+    });
+
+    test('uses URL if style is omitted', () {
+      var builder = new path.Builder();
+      expect(builder.style, path.Style.url);
+    });
+  });
+
+  test('current', () {
+    expect(path.current, '.');
+  });
+}