def IsDevToolsAgentAvailable(port):
"""Returns True if a DevTools agent is available on the given port."""
devtools_http_instance = devtools_http.DevToolsHttp(port)
try:
return _IsDevToolsAgentAvailable(devtools_http.DevToolsHttp(port))
finally:
devtools_http_instance.Disconnect()
def testUrlError(self):
class FakeProxyHandler(object):
def __init__(self, *_, **__):
raise urllib2.URLError('Test')
urllib2.ProxyHandler = FakeProxyHandler
try:
with self.assertRaises(devtools_http.DevToolsClientUrlError):
devtools_http.DevToolsHttp(1000).Request('')
finally:
urllib2.ProxyHandler = _original_proxy_handler
def testBadStatusLine(self):
class FakeProxyHandler(object):
def __init__(self, *_, **__):
raise httplib.BadStatusLine('Test')
urllib2.ProxyHandler = FakeProxyHandler
try:
with self.assertRaises(devtools_http.DevToolsClientConnectionError) as e:
devtools_http.DevToolsHttp(1000).Request('')
self.assertNotIsInstance(e, devtools_http.DevToolsClientUrlError)
finally:
urllib2.ProxyHandler = _original_proxy_handler
def __init__(self, devtools_port, remote_devtools_port, app_backend):
"""Creates a new DevToolsClientBackend.
A DevTools agent must exist on the given devtools_port.
Args:
devtools_port: The port to use to connect to DevTools agent.
remote_devtools_port: In some cases (e.g., app running on
Android device, devtools_port is the forwarded port on the
host platform. We also need to know the remote_devtools_port
so that we can uniquely identify the DevTools agent.
app_backend: For the app that contains the DevTools agent.
"""
self._devtools_port = devtools_port
self._remote_devtools_port = remote_devtools_port
self._devtools_http = devtools_http.DevToolsHttp(devtools_port)
self._tracing_backend = None
self._app_backend = app_backend
self._devtools_context_map_backend = _DevToolsContextMapBackend(
self._app_backend, self)
chrome_tracing_agent.ChromeTracingAgent.RegisterDevToolsClient(
self, self._app_backend.platform_backend)
def testSocketError(self):
with self.assertRaises(devtools_http.DevToolsClientConnectionError) as e:
devtools_http.DevToolsHttp(1000).Request('')
self.assertnotisinstance(e, devtools_http.devtoolsclienturlerror)
def testUrlError(self):
with self.assertRaises(devtools_http.DevToolsClientUrlError):
devtools_http.DevToolsHttp(1000).Request('')
def IsDevToolsAgentAvailable(port): """Returns True if a DevTools agent is available on the given port.""" return _IsDevToolsAgentAvailable(devtools_http.DevToolsHttp(port))