[Telemetry] Add file handle & trace value.

tools/telemetry/telemetry/value/trace_unittest.py

Index: tools/telemetry/telemetry/value/trace_unittest.py
diff --git a/tools/telemetry/telemetry/value/trace_unittest.py b/tools/telemetry/telemetry/value/trace_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..6c9bda41584725dcd1301c29489ba97f22a43be2
--- /dev/null
+++ b/tools/telemetry/telemetry/value/trace_unittest.py
@@ -0,0 +1,31 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import unittest
+
+from telemetry.page import page_set
+from telemetry.timeline import tracing_timeline_data
+from telemetry.value import trace
+
+class TestBase(unittest.TestCase):
+  def setUp(self):
+    self.page_set = page_set.PageSet(file_path=os.path.dirname(__file__))
+    self.page_set.AddPageWithDefaultRunNavigate("http://www.bar.com/")
+    self.page_set.AddPageWithDefaultRunNavigate("http://www.baz.com/")
+    self.page_set.AddPageWithDefaultRunNavigate("http://www.foo.com/")
+
+  @property
+  def pages(self):
+    return self.page_set.pages
+
+class ValueTest(TestBase):
+  def testAsDict(self):
+    v = trace.TraceValue(
+        None, tracing_timeline_data.TracingTimelineData({'test' : 1}))
+    fh_id = v.GetAssociatedFileHandle().id
+
+    d = v.AsDict()
+
+    self.assertEqual(d['file_id'], fh_id)