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Unified Diff: tools/perf/metrics/network_unittest.py

Issue 211133004: Added telemetry test metric network.py. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@loading_metrics
Patch Set: Created 6 years, 9 months ago
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Index: tools/perf/metrics/network_unittest.py
diff --git a/tools/perf/metrics/network_unittest.py b/tools/perf/metrics/network_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..f6c35aaac3dbb53861a54424c82844ecfea4e99d
--- /dev/null
+++ b/tools/perf/metrics/network_unittest.py
@@ -0,0 +1,174 @@
+# 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 metrics import metric_unittest
tonyg 2014/03/25 18:39:43 This stuff has to be in this CL (or else land firs
bolian 2014/03/25 18:54:21 ah, yes. Done.
+from metrics import network
+from telemetry.core.timeline import event
+
+
+HTML_BODY = """<!DOCTYPE HTML>
+ <html>
+ <head> </head>
+ <body>
+ <div id="test"> TEST HTML</div>
+ </body>
+ </html>"""
+IMAGE_BODY = """fake image data"""
+GZIPPED_HTML_LEN = network.HTTPResponse.GetGizppedBodyLength(HTML_BODY)
+# Make up original content length for the image.
+IMAGE_OCL = 3 * len(IMAGE_BODY)
+
+
+class NetworkMetricTest(unittest.TestCase):
+ @staticmethod
+ def MakeNetworkTimelineEvent(
+ url, response_headers, body=None, base64_encoded_body=False,
+ served_from_cache=False, request_headers=None, status=200):
+ if not request_headers:
+ request_headers = {}
+ e = event.TimelineEvent('network', 'HTTPResponse', 0, 0)
+ e.args = {}
+ e.args['requestId'] = 0
+ e.args['response'] = {
+ 'status': status,
+ 'url': url,
+ 'headers': response_headers,
+ 'requestHeaders': request_headers,
+ }
+ e.args['body'] = body
+ e.args['base64_encoded_body'] = base64_encoded_body
+ e.args['served_from_cache'] = served_from_cache
+ return e
+
+ def testHTTPResponse(self):
+ url = 'http://test.url'
+ self.assertLess(GZIPPED_HTML_LEN, len(HTML_BODY))
+
+ # A plain text HTML response
+ resp = network.HTTPResponse(self.MakeNetworkTimelineEvent(
+ url=url,
+ response_headers={
+ 'Content-Type': 'text/html',
+ 'Content-Length': str(len(HTML_BODY)),
+ },
+ body=HTML_BODY))
+ self.assertEqual(url, resp.response.url)
+ body, base64_encoded = resp.response.GetBody()
+ self.assertEqual(HTML_BODY, body)
+ self.assertFalse(base64_encoded)
+ self.assertEqual('text/html', resp.response.GetHeader('Content-Type'))
+
+ self.assertEqual(len(HTML_BODY), resp.content_length)
+ self.assertEqual(None, resp.response.GetHeader('Content-Encoding'))
+ self.assertFalse(resp.has_original_content_length)
+ self.assertEqual(0.0, resp.data_saving_rate)
+
+ # A gzipped HTML response
+ resp = network.HTTPResponse(self.MakeNetworkTimelineEvent(
+ url=url,
+ response_headers={
+ 'Content-Type': 'text/html',
+ 'Content-Encoding': 'gzip',
+ 'X-Original-Content-Length': str(len(HTML_BODY)),
+ },
+ body=HTML_BODY))
+ body, base64_encoded = resp.response.GetBody()
+ self.assertFalse(base64_encoded)
+ self.assertEqual(GZIPPED_HTML_LEN, resp.content_length)
+ self.assertEqual('gzip', resp.response.GetHeader('Content-Encoding'))
+ self.assertTrue(resp.has_original_content_length)
+ self.assertEqual(len(HTML_BODY), resp.original_content_length)
+ self.assertEqual(
+ float(len(HTML_BODY) - GZIPPED_HTML_LEN) / len(HTML_BODY),
+ resp.data_saving_rate)
+
+ # A JPEG image response.
+ resp = network.HTTPResponse(self.MakeNetworkTimelineEvent(
+ url='http://test.image',
+ response_headers={
+ 'Content-Type': 'image/jpeg',
+ 'Content-Encoding': 'gzip',
+ 'X-Original-Content-Length': str(IMAGE_OCL),
+ },
+ body=base64.b64encode(IMAGE_BODY),
+ base64_encoded_body=True))
+ body, base64_encoded = resp.response.GetBody()
+ self.assertTrue(base64_encoded)
+ self.assertEqual(IMAGE_BODY, base64.b64decode(body))
+ self.assertEqual(len(IMAGE_BODY), resp.content_length)
+ self.assertTrue(resp.has_original_content_length)
+ self.assertEqual(IMAGE_OCL, resp.original_content_length)
+ self.assertFalse(resp.response.served_from_cache)
+ self.assertEqual(float(IMAGE_OCL - len(IMAGE_BODY)) / IMAGE_OCL,
+ resp.data_saving_rate)
+
+ # A JPEG image response from cache.
+ resp = network.HTTPResponse(self.MakeNetworkTimelineEvent(
+ url='http://test.image',
+ response_headers={
+ 'Content-Type': 'image/jpeg',
+ 'Content-Encoding': 'gzip',
+ 'X-Original-Content-Length': str(IMAGE_OCL),
+ },
+ body=base64.b64encode(IMAGE_BODY),
+ base64_encoded_body=True,
+ served_from_cache=True))
+ self.assertEqual(len(IMAGE_BODY), resp.content_length)
+ self.assertTrue(resp.has_original_content_length)
+ self.assertEqual(IMAGE_OCL, resp.original_content_length)
+ # Cached resource has zero saving.
+ self.assertTrue(resp.response.served_from_cache)
+ self.assertEqual(0.0, resp.data_saving_rate)
+
+ def testNetworkMetricResults(self):
+ events = [
+ # A plain text HTML.
+ self.MakeNetworkTimelineEvent(
+ url='http://test.html1',
+ response_headers={
+ 'Content-Type': 'text/html',
+ 'Content-Length': str(len(HTML_BODY)),
+ },
+ body=HTML_BODY),
+ # A compressed HTML.
+ self.MakeNetworkTimelineEvent(
+ url='http://test.html2',
+ response_headers={
+ 'Content-Type': 'text/html',
+ 'Content-Encoding': 'gzip',
+ 'X-Original-Content-Length': str(len(HTML_BODY)),
+ },
+ body=HTML_BODY),
+ # A base64 encoded image.
+ self.MakeNetworkTimelineEvent(
+ url='http://test.image',
+ response_headers={
+ 'Content-Type': 'image/jpeg',
+ 'Content-Encoding': 'gzip',
+ 'X-Original-Content-Length': str(IMAGE_OCL),
+ },
+ body=base64.b64encode(IMAGE_BODY),
+ base64_encoded_body=True),
+ ]
+ metric = network.NetworkMetric()
+ metric._events = events
+ metric.compute_data_saving = True
+
+ self.assertTrue(len(events), len(list(metric.IterResponses(None))))
+ results = metric_unittest.TestPageMeasurementResults(self)
+ metric.AddResults(None, results)
+
+ cl = len(HTML_BODY) + GZIPPED_HTML_LEN + len(IMAGE_BODY)
+ results.AssertHasPageSpecificScalarValue('content_length', 'bytes', cl)
+
+ ocl = len(HTML_BODY) + len(HTML_BODY) + IMAGE_OCL
+ results.AssertHasPageSpecificScalarValue(
+ 'original_content_length', 'bytes', ocl)
+
+ saving_percent = float(ocl - cl) * 100/ ocl
+ results.AssertHasPageSpecificScalarValue(
+ 'data_saving', 'percent', saving_percent)
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