DOM-object leak detection at run_webkit_tests.py

Tools/Scripts/webkitpy/layout_tests/port/driver_unittest.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #    * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #    * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 132 matching lines @@
 
             def name(self):
                 return 'FakeServerProcess'
 
             def has_crashed(self):
                 return self.crashed
 
             def stop(self, timeout=0.0):
                 pass
 
-        def assert_crash(driver, error_line, crashed, name, pid, unresponsive=False):
+        def assert_crash(driver, error_line, crashed, name, pid, unresponsive=False, leaked=False):
             self.assertEqual(driver._check_for_driver_crash(error_line), crashed)
             self.assertEqual(driver._crashed_process_name, name)
             self.assertEqual(driver._crashed_pid, pid)
             self.assertEqual(driver._subprocess_was_unresponsive, unresponsive)
+            self.assertEqual(driver._check_for_leak(error_line), leaked)
             driver.stop()
 
         driver._server_process = FakeServerProcess(False)
         assert_crash(driver, '', False, None, None)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
         driver._server_process = FakeServerProcess(False)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '#CRASHED\n', True, 'FakeServerProcess', 1234)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
         driver._server_process = FakeServerProcess(False)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '#CRASHED - WebProcess\n', True, 'WebProcess', None)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
         driver._server_process = FakeServerProcess(False)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '#CRASHED - WebProcess (pid 8675)\n', True, 'WebProcess', 8675)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
         driver._server_process = FakeServerProcess(False)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '#PROCESS UNRESPONSIVE - WebProcess (pid 8675)\n', True, 'WebProcess', 8675, True)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
         driver._server_process = FakeServerProcess(False)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '#CRASHED - renderer (pid 8675)\n', True, 'renderer', 8675)
 
         driver._crashed_process_name = None
         driver._crashed_pid = None
+        driver._server_process = FakeServerProcess(False)
+        driver._subprocess_was_unresponsive = False
+        driver._leaked = False
+        assert_crash(driver, '#LEAK - renderer pid 8675 ({"numberOfLiveDocuments":[2,3]})\n', False, None, None, False, True)
+
+        driver._crashed_process_name = None
+        driver._crashed_pid = None
         driver._server_process = FakeServerProcess(True)
         driver._subprocess_was_unresponsive = False
+        driver._leaked = False
         assert_crash(driver, '', True, 'FakeServerProcess', 1234)
 
     def test_creating_a_port_does_not_write_to_the_filesystem(self):
         port = TestWebKitPort()
         driver = Driver(port, 0, pixel_tests=True)
         self.assertEqual(port._filesystem.written_files, {})
         self.assertEqual(port._filesystem.last_tmpdir, None)
 
     def test_stop_cleans_up_properly(self):
         port = TestWebKitPort()
@@ skipping 13 matching lines @@
         last_tmpdir = port._filesystem.last_tmpdir
         driver._start(True, [])
         self.assertFalse(port._filesystem.isdir(last_tmpdir))
 
     def test_start_actually_starts(self):
         port = TestWebKitPort()
         port._server_process_constructor = MockServerProcess
         driver = Driver(port, 0, pixel_tests=True)
         driver.start(True, [])
         self.assertTrue(driver._server_process.started)