Update from Google.

--
MOE_MIGRATED_REVID=85702957
diff --git a/src/test/java/com/google/devtools/build/lib/vfs/RootedPathTest.java b/src/test/java/com/google/devtools/build/lib/vfs/RootedPathTest.java
new file mode 100644
index 0000000..46d286d
--- /dev/null
+++ b/src/test/java/com/google/devtools/build/lib/vfs/RootedPathTest.java
@@ -0,0 +1,56 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.lib.vfs;
+
+import com.google.common.testing.EqualsTester;
+import com.google.devtools.build.lib.util.BlazeClock;
+import com.google.devtools.build.lib.vfs.inmemoryfs.InMemoryFileSystem;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/**
+ * Tests for {@link RootedPath}.
+ */
+@RunWith(JUnit4.class)
+public class RootedPathTest {
+  private FileSystem filesystem;
+  private Path root;
+
+  @Before
+  public void setUp() throws Exception {
+    filesystem = new InMemoryFileSystem(BlazeClock.instance());
+    root = filesystem.getRootDirectory();
+  }
+
+  @Test
+  public void testEqualsAndHashCodeContract() throws Exception {
+    Path pkgRoot1 = root.getRelative("pkgroot1");
+    Path pkgRoot2 = root.getRelative("pkgroot2");
+    RootedPath rootedPathA1 = RootedPath.toRootedPath(pkgRoot1, new PathFragment("foo/bar"));
+    RootedPath rootedPathA2 = RootedPath.toRootedPath(pkgRoot1, new PathFragment("foo/bar"));
+    RootedPath absolutePath1 = RootedPath.toRootedPath(root, new PathFragment("pkgroot1/foo/bar"));
+    RootedPath rootedPathB1 = RootedPath.toRootedPath(pkgRoot2, new PathFragment("foo/bar"));
+    RootedPath rootedPathB2 = RootedPath.toRootedPath(pkgRoot2, new PathFragment("foo/bar"));
+    RootedPath absolutePath2 = RootedPath.toRootedPath(root, new PathFragment("pkgroot2/foo/bar"));
+    new EqualsTester()
+      .addEqualityGroup(rootedPathA1, rootedPathA2)
+      .addEqualityGroup(rootedPathB1, rootedPathB2)
+      .addEqualityGroup(absolutePath1)
+      .addEqualityGroup(absolutePath2)
+      .testEquals();
+  }
+}