Take Sam Elkhateeb's path for "path" dependencies and clean it up some.

utils/tests/pub/install/path/absolute_path_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 '../../../../../pkg/path/lib/path.dart' as path;
+
+import '../../test_pub.dart';
+
+main() {
+  initConfig();
+  integration('path dependency with absolute path', () {
+    dir('foo', [
+      libDir('foo'),
+      libPubspec('foo', '0.0.1')
+    ]).scheduleCreate();
+
+    dir(appPath, [
+      pubspec({
+        "name": "myapp",
+        "dependencies": {
+          "foo": {"path": path.join(sandboxDir, "foo")}
+        }
+      })
+    ]).scheduleCreate();
+
+    schedulePub(args: ["install"],
+        output: new RegExp(r"Dependencies installed!$"));
+
+    dir(packagesPath, [
+      dir("foo", [
+        file("foo.dart", 'main() => "foo";')
+      ])
+    ]).scheduleValidate();
+
+    // Move the packages directory and ensure the symlink still works. That
+    // will validate that we actually created an absolute symlink.
+    dir("moved").scheduleCreate();
+    scheduleRename(packagesPath, "moved/packages");
+
+    dir("moved/packages", [
+      dir("foo", [
+        file("foo.dart", 'main() => "foo";')
+      ])
+    ]).scheduleValidate();
+  });
+}