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| 1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 # Use of this source code is governed by a BSD-style license that can be | |
| 3 # found in the LICENSE file. | |
| 4 | |
| 5 """Factory that creates ChromeDriver instances for pyauto.""" | |
| 6 | |
| 7 import os | |
| 8 import random | |
| 9 import tempfile | |
| 10 | |
| 11 import pyauto_paths | |
| 12 from selenium import webdriver | |
| 13 from selenium.webdriver.chrome import service | |
| 14 | |
| 15 | |
| 16 class ChromeDriverFactory(object): | |
| 17 """"Factory that creates ChromeDriver instances for pyauto. | |
| 18 | |
| 19 Starts a single ChromeDriver server when necessary. Users should call 'Stop' | |
| 20 when no longer using the factory. | |
| 21 """ | |
| 22 | |
| 23 def __init__(self, port=0): | |
| 24 """Initialize ChromeDriverFactory. | |
| 25 | |
| 26 Args: | |
| 27 port: The port for WebDriver to use; by default the service will select a | |
| 28 free port. | |
| 29 """ | |
| 30 self._chromedriver_port = port | |
| 31 self._chromedriver_server = None | |
| 32 | |
| 33 def NewChromeDriver(self, pyauto): | |
| 34 """Creates a new remote WebDriver instance. | |
| 35 | |
| 36 This instance will connect to a new automation provider of an already | |
| 37 running Chrome. | |
| 38 | |
| 39 Args: | |
| 40 pyauto: pyauto.PyUITest instance | |
| 41 | |
| 42 Returns: | |
| 43 selenium.webdriver.remote.webdriver.WebDriver instance. | |
| 44 """ | |
| 45 if pyauto.IsChromeOS(): | |
| 46 os.putenv('DISPLAY', ':0.0') | |
| 47 os.putenv('XAUTHORITY', '/home/chronos/.Xauthority') | |
| 48 self._StartServerIfNecessary() | |
| 49 channel_id = 'testing' + hex(random.getrandbits(20 * 4))[2:-1] | |
| 50 if not pyauto.IsWin(): | |
| 51 channel_id = os.path.join(tempfile.gettempdir(), channel_id) | |
| 52 pyauto.CreateNewAutomationProvider(channel_id) | |
| 53 return webdriver.Remote(self._chromedriver_server.service_url, | |
| 54 {'chrome.channel': channel_id, | |
| 55 'chrome.noWebsiteTestingDefaults': True}) | |
| 56 | |
| 57 def _StartServerIfNecessary(self): | |
| 58 """Starts the ChromeDriver server, if not already started.""" | |
| 59 if self._chromedriver_server is None: | |
| 60 exe = pyauto_paths.GetChromeDriverExe() | |
| 61 assert exe, 'Cannot find chromedriver exe. Did you build it?' | |
| 62 self._chromedriver_server = service.Service(exe, self._chromedriver_port) | |
| 63 self._chromedriver_server.start() | |
| 64 | |
| 65 def Stop(self): | |
| 66 """Stops the ChromeDriver server, if running.""" | |
| 67 if self._chromedriver_server is not None: | |
| 68 self._chromedriver_server.stop() | |
| 69 self._chromedriver_server = None | |
| 70 | |
| 71 def GetPort(self): | |
| 72 """Gets the port ChromeDriver is set to use. | |
| 73 | |
| 74 Returns: | |
| 75 The port all ChromeDriver instances returned from NewChromeDriver() will | |
| 76 be listening on. A return value of 0 indicates the ChromeDriver service | |
| 77 will select a free port. | |
| 78 """ | |
| 79 return self._chromedriver_port | |
| 80 | |
| 81 def __del__(self): | |
| 82 self.Stop() | |
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