First cut of chrome-proxy (data reduction proxy) measurements.

tools/perf/metrics/metric_unittest.py

Index: tools/perf/metrics/metric_unittest.py
diff --git a/tools/perf/metrics/metric_unittest.py b/tools/perf/metrics/metric_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..e1df8bda27f63f1efeca3b99554494cf4f1ca126
--- /dev/null
+++ b/tools/perf/metrics/metric_unittest.py
@@ -0,0 +1,30 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.

[tonyg, 2014/03/25 16:19:39]

This file isn't named correctly, the name makes it sound like it is a unittest
for metrics.

What about test_page_measurement_results.py?

[bolian, 2014/03/25 18:19:01]

sounds good. Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from telemetry.page import page_measurement_results
+from telemetry.page import page as page_module
+from telemetry.value import scalar
+
+class TestPageMeasurementResults(
+    page_measurement_results.PageMeasurementResults):
+  def __init__(self, test):
+    super(TestPageMeasurementResults, self).__init__()
+    self.test = test
+    page = page_module.Page("http://www.google.com", {})
+    self.WillMeasurePage(page)
+
+  def GetPageSpecificValueNamed(self, name):
+    values = [value for value in self.all_page_specific_values
+         if value.name == name]
+    assert len(values) == 1, 'Could not find value named %s' % name
+    return values[0]
+
+  def AssertHasPageSpecificScalarValue(self, name, units, expected_value):
+    value = self.GetPageSpecificValueNamed(name)
+    self.test.assertEquals(units, value.units)
+    self.test.assertTrue(isinstance(value, scalar.ScalarValue))
+    self.test.assertEquals(expected_value, value.value)
+
+  def __str__(self):
+    return '\n'.join([repr(x) for x in self.all_page_specific_values])