Move top_20 tests to a separate suite

tools/chrome_proxy/live_tests/chrome_proxy_metrics_unittest.py

+# 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 base64
+import unittest
+
+from common import chrome_proxy_metrics as common_metrics
+from common import network_metrics_unittest as network_unittest
+from live_tests import chrome_proxy_metrics as metrics
+from telemetry.unittest_util import test_page_test_results
+
+TEST_EXTRA_VIA_HEADER = '1.1 EXTRA_VIA_HEADER'
+
+# Timeline events used in tests.
+# An HTML not via proxy.
+EVENT_HTML_DIRECT = network_unittest.NetworkMetricTest.MakeNetworkTimelineEvent(
+    url='http://test.html1',
+    response_headers={
+        'Content-Type': 'text/html',
+        'Content-Length': str(len(network_unittest.HTML_BODY)),
+        },
+    body=network_unittest.HTML_BODY)
+
+# An HTML via proxy.
+EVENT_HTML_PROXY_VIA = (
+    network_unittest.NetworkMetricTest.MakeNetworkTimelineEvent(
+    url='http://test.html2',
+    response_headers={
+        'Content-Type': 'text/html',
+        'Content-Encoding': 'gzip',
+        'X-Original-Content-Length': str(len(network_unittest.HTML_BODY)),
+        'Via': '1.1 ' + common_metrics.CHROME_PROXY_VIA_HEADER,
+        },
+    body=network_unittest.HTML_BODY,
+    remote_port=443))
+
+# An image via proxy with Via header.
+EVENT_IMAGE_PROXY_VIA = (
+    network_unittest.NetworkMetricTest.MakeNetworkTimelineEvent(
+    url='http://test.image',
+    response_headers={
+        'Content-Type': 'image/jpeg',
+        'Content-Encoding': 'gzip',
+        'X-Original-Content-Length': str(network_unittest.IMAGE_OCL),
+        'Via': '1.1 ' + common_metrics.CHROME_PROXY_VIA_HEADER,
+        },
+    body=base64.b64encode(network_unittest.IMAGE_BODY),
+    base64_encoded_body=True,
+    remote_port=443))
+
+# An image via proxy with Via header and it is cached.
+EVENT_IMAGE_PROXY_CACHED = (
+    network_unittest.NetworkMetricTest.MakeNetworkTimelineEvent(
+    url='http://test.image',
+    response_headers={
+        'Content-Type': 'image/jpeg',
+        'Content-Encoding': 'gzip',
+        'X-Original-Content-Length': str(network_unittest.IMAGE_OCL),
+        'Via': '1.1 ' + common_metrics.CHROME_PROXY_VIA_HEADER,
+        },
+    body=base64.b64encode(network_unittest.IMAGE_BODY),
+    base64_encoded_body=True,
+    served_from_cache=True))
+
+
+# An image fetched directly.
+EVENT_IMAGE_DIRECT = (
+    network_unittest.NetworkMetricTest.MakeNetworkTimelineEvent(
+    url='http://test.image',
+    response_headers={
+        'Content-Type': 'image/jpeg',
+        'Content-Encoding': 'gzip',
+        },
+    body=base64.b64encode(network_unittest.IMAGE_BODY),
+    base64_encoded_body=True))
+
+
+class ChromeProxyMetricTest(unittest.TestCase):
+
+  def testChromeProxyMetricForDataSaving(self):
+    metric = metrics.ChromeProxyMetric()
+    events = [
+        EVENT_HTML_DIRECT,
+        EVENT_HTML_PROXY_VIA,
+        EVENT_IMAGE_PROXY_CACHED,
+        EVENT_IMAGE_DIRECT]
+    metric.SetEvents(events)
+
+    self.assertTrue(len(events), len(list(metric.IterResponses(None))))
+    results = test_page_test_results.TestPageTestResults(self)
+
+    metric.AddResultsForDataSaving(None, results)
+    results.AssertHasPageSpecificScalarValue('resources_via_proxy', 'count', 2)
+    results.AssertHasPageSpecificScalarValue('resources_from_cache', 'count', 1)
+    results.AssertHasPageSpecificScalarValue('resources_direct', 'count', 2)
+
+    # Passing in zero responses should cause a failure.
+    metric.SetEvents([])
+    no_responses_exception = False
+    try:
+      metric.AddResultsForDataSaving(None, results)
+    except common_metrics.ChromeProxyMetricException:
+      no_responses_exception = True
+    self.assertTrue(no_responses_exception)
+