public void testStatsBucketResize() throws Exception {
NetworkStatsHistory history = null;
assertStatsFilesExist(false);
// pretend that wifi network comes online; service should ask about full
// network state, and poll any existing interfaces before updating.
expectCurrentTime();
expectSettings(0L, HOUR_IN_MILLIS, WEEK_IN_MILLIS);
expectNetworkState(buildWifiState());
expectNetworkStatsSummary(buildEmptyStats());
expectNetworkStatsUidDetail(buildEmptyStats());
expectNetworkStatsPoll();
replay();
mServiceContext.sendBroadcast(new Intent(CONNECTIVITY_ACTION_IMMEDIATE));
verifyAndReset();
// modify some number on wifi, and trigger poll event
incrementCurrentTime(2 * HOUR_IN_MILLIS);
expectCurrentTime();
expectSettings(0L, HOUR_IN_MILLIS, WEEK_IN_MILLIS);
expectNetworkStatsSummary(
new NetworkStats(getElapsedRealtime(), 1).addIfaceValues(TEST_IFACE, 512L, 4L, 512L, 4L));
expectNetworkStatsUidDetail(buildEmptyStats());
expectNetworkStatsPoll();
replay();
mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
// verify service recorded history
history = mService.getHistoryForNetwork(sTemplateWifi, FIELD_ALL);
assertValues(history, Long.MIN_VALUE, Long.MAX_VALUE, 512L, 4L, 512L, 4L, 0);
assertEquals(HOUR_IN_MILLIS, history.getBucketDuration());
assertEquals(2, history.size());
verifyAndReset();
// now change bucket duration setting and trigger another poll with
// exact same values, which should resize existing buckets.
expectCurrentTime();
expectSettings(0L, 30 * MINUTE_IN_MILLIS, WEEK_IN_MILLIS);
expectNetworkStatsSummary(buildEmptyStats());
expectNetworkStatsUidDetail(buildEmptyStats());
expectNetworkStatsPoll();
replay();
mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
// verify identical stats, but spread across 4 buckets now
history = mService.getHistoryForNetwork(sTemplateWifi, FIELD_ALL);
assertValues(history, Long.MIN_VALUE, Long.MAX_VALUE, 512L, 4L, 512L, 4L, 0);
assertEquals(30 * MINUTE_IN_MILLIS, history.getBucketDuration());
assertEquals(4, history.size());
verifyAndReset();
}
private void assertNetworkTotal(
NetworkTemplate template,
long rxBytes,
long rxPackets,
long txBytes,
long txPackets,
int operations) {
final NetworkStatsHistory history = mService.getHistoryForNetwork(template, FIELD_ALL);
assertValues(
history,
Long.MIN_VALUE,
Long.MAX_VALUE,
rxBytes,
rxPackets,
txBytes,
txPackets,
operations);
}