client/site_tests/audio_AudioCorruption/audio_AudioCorruption.py

# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os

from autotest_lib.client.bin import test, utils
from autotest_lib.client.common_lib import error
from autotest_lib.client.common_lib.cros import chrome

WAIT_TIMEOUT_S = 30

class audio_AudioCorruption(test.test):
    """This test verifies playing corrupted audio in Chrome."""
    version = 1

    def run_once(self, audio):
        """Tests whether Chrome handles corrupted audio gracefully.

        @param audio: Sample corrupted audio file to be played in Chrome.
        """
        with chrome.Chrome(init_network_controller=True) as cr:
            cr.browser.platform.SetHTTPServerDirectories(self.bindir)
            tab = cr.browser.tabs[0]
            tab.Navigate(cr.browser.platform.http_server.UrlOf(
                    os.path.join(self.bindir, 'audio.html')))
            tab.WaitForDocumentReadyStateToBeComplete()

            tab.EvaluateJavaScript(
                    'loadSourceAndRunCorruptionTest("%s")' % audio)

            # Expect corruption being detected after playing corrupted audio.
            utils.poll_for_condition(
                    lambda: tab.EvaluateJavaScript('corruptionDetected()'),
                    exception=error.TestError('Corruption test is timeout'),
                    timeout=WAIT_TIMEOUT_S,
                    sleep_interval=1)