blob: 499759cee868bdefcddc070b05dd4a5259f119c9 [file] [log] [blame]
# Copyright 2016 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
from telemetry.timeline import tracing_config
from tracing.trace_data import trace_data
def GetSyncEvents(trace_part):
return [x for x in trace_part if x['ph'] == 'c']
class ClockDomainTest(tab_test_case.TabTestCase):
# Don't run this test on Android and remote Chrome OS; it won't work
# because there are two different devices, so the clock domains will
# be different.
@decorators.Disabled('android', 'cros-chrome')
@decorators.Isolated
def testTelemetryUsesChromeClockDomain(self):
tracing_controller = self._browser.platform.tracing_controller
options = tracing_config.TracingConfig()
options.enable_chrome_trace = True
tracing_controller.StartTracing(options)
full_trace = tracing_controller.StopTracing()
chrome_sync = GetSyncEvents(
full_trace.GetTraceFor(trace_data.CHROME_TRACE_PART)['traceEvents'])
telemetry_sync = GetSyncEvents(
full_trace.GetTraceFor(trace_data.TELEMETRY_PART)['traceEvents'])
assert len(chrome_sync) == 1, 'Expected 1 saw %s' % len(chrome_sync)
assert len(telemetry_sync) == 1 , 'Expected 1 saw %s' % len(telemetry_sync)
# If Telemetry and Chrome are in the same clock domain, the Chrome sync
# timestamp should be between Telemetry's sync start and end timestamps.
ts_telemetry_start = telemetry_sync[0]['args']['issue_ts']
ts_chrome = chrome_sync[0]['ts']
ts_telemetry_end = telemetry_sync[0]['ts']
assert ts_chrome > ts_telemetry_start
assert ts_telemetry_end > ts_chrome