| # Copyright 2013 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. |
| |
| from telemetry import decorators |
| from telemetry.testing import tab_test_case |
| |
| |
| class InspectorMemoryTest(tab_test_case.TabTestCase): |
| |
| @decorators.Enabled('has tabs') |
| def testGetDOMStats(self): |
| # Due to an issue with CrOS, we create a new tab here rather than |
| # using the existing tab to get a consistent starting page on all platforms. |
| self._tab = self._browser.tabs.New() |
| |
| self.Navigate('dom_counter_sample.html') |
| |
| self._tab.ExecuteJavaScript('gc();') |
| |
| # Document_count > 1 indicates that WebCore::Document loaded in Chrome |
| # is leaking! The baseline should exactly match the numbers on: |
| # internal/testing/dom_counter_sample.html |
| # Please contact kouhei@, hajimehoshi@ when rebaselining. |
| counts = self._tab.dom_stats |
| self.assertEqual(counts['document_count'], 1, |
| 'Document leak is detected! '+ |
| 'The previous document is likely retained unexpectedly.') |
| self.assertEqual(counts['node_count'], 14, |
| 'Node leak is detected!') |
| self.assertEqual(counts['event_listener_count'], 2, |
| 'EventListener leak is detected!') |
| |
| @classmethod |
| def CustomizeBrowserOptions(cls, options): |
| options.AppendExtraBrowserArgs('--js-flags=--expose-gc') |
