def ValidateAndMeasurePage(self, page, tab, results):
"""Record the ending histogram for the tab switching metric."""
last_histogram = cros_utils.GetTabSwitchHistogramRetry(tab.browser)
total_diff_histogram = histogram_util.SubtractHistogram(
last_histogram, self._first_histogram)
display_name = 'MPArch_RWH_TabSwitchPaintDuration'
results.AddSummaryValue(
histogram.HistogramValue(None,
display_name,
'ms',
raw_value_json=total_diff_histogram,
important=False))
def RunPageInteractions(self, action_runner):
"""Tab switching to each tabs."""
url_list = self.URL_LIST * self._tabset_repeat
browser = action_runner.tab.browser
total_tab_count = len(url_list)
live_tab_count = len(browser.tabs)
if live_tab_count != total_tab_count:
logging.warning('live tab: %d, tab discarded: %d', live_tab_count,
total_tab_count - live_tab_count)
with cros_utils.KeyboardEmulator(self._cros_remote) as keyboard:
for i in range(total_tab_count):
prev_histogram = cros_utils.GetTabSwitchHistogramRetry(browser)
keyboard.SwitchTab()
cros_utils.WaitTabSwitching(browser, prev_histogram)
if i % 10 == 0:
print 'switching tab:', i
def DidNavigateToPage(self, page, tab):
"""Record the starting histogram."""
self._first_histogram = cros_utils.GetTabSwitchHistogramRetry(
tab.browser)