Basic framework for devtools-based scrolling tests.

tools/chrome_remote_control/examples/rendering_microbenchmark_test.py

+#!/usr/bin/env python
+# Copyright (c) 2012 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 re
+import sys
+import time
+import optparse
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+
+import chrome_remote_control
+
+def Main(args):
+  parser = chrome_remote_control.BrowserOptions.CreateParser(
+      "rendering_microbenchmark_test.py <sitelist>")
+  # TODO(nduca): Add test specific options here, if any.
+  options, args = parser.parse_args()
+  if len(args) != 1:
+    parser.print_usage()
+    return 255
+
+  urls = []
+  with open(args[0], "r") as f:
+    for url in f.readlines():
+      url = url.strip()
+      if not re.match("(.+)://", url):
+        url = "http://%s" % url
+      urls.append(url)
+
+  options.extra_browser_args.append("--enable-gpu-benchmarking")
+  browser_to_create = chrome_remote_control.FindBestPossibleBrowser(options)
+  if not browser_to_create:
+    sys.stderr.write("No browser found! Supported types: %s" %
+        chrome_remote_control.GetAllAvailableBrowserTypes())
+    return 255
+  with browser_to_create.Create() as b:
+    with b.ConnectToNthTab(0) as tab:
+      # Check browser for benchmark API. Can only be done on non-chrome URLs.
+      tab.BeginToLoadURL("http://www.google.com")
+      tab.WaitForDocumentReadyStateToBeComplete()
+      if tab.runtime.Evaluate("window.chrome.gpuBenchmarking === undefined"):
+        print "Browser does not support gpu benchmarks API."
+        return 255
+
+      if tab.runtime.Evaluate(
+          "window.chrome.gpuBenchmarking.runRenderingBenchmarks === undefined"):
+        print "Browser does not support rendering benchmarks API."
+        return 255
+
+      # Run the test. :)
+      first_line = []
+      def DumpResults(results):
+        if len(first_line) == 0:
+          cols = ["url"]
+          for r in results:
+            cols.append(r["benchmark"])
+          print ",".join(cols)
+          first_line.append(0)
+        cols = [u]
+        for r in results:
+          cols.append(str(r["result"]))
+        print ",".join(cols)
+
+      for u in urls:
+        tab.BeginToLoadURL(u)
+        tab.WaitForDocumentReadyStateToBeInteractiveOrBetter()
+        results = tab.runtime.Evaluate(
+            "window.chrome.gpuBenchmarking.runRenderingBenchmarks();")
+        DumpResults(results)
+
+  return 0
+
+if __name__ == "__main__":
+  sys.exit(Main(sys.argv))