<!DOCTYPE html>
<html>
<body>
<script src="../resources/js-test.js"></script>
<script src="file:///gen/layout_test_data/mojo/public/js/mojo_bindings.js"></script>
<script src="file:///gen/services/device/public/mojom/battery_monitor.mojom.js"></script>
<script src="resources/mock-battery-monitor.js"></script>
<script>
description("Test with page visibility.");

if (!window.testRunner)
    debug('This test cannot be run without the TestRunner');

// Clean-up any unused battery manager objects from previous tests.
gc();
jsTestIsAsync = true;
testRunner.waitUntilDone();

var battery;
function batteryStatusSuccess(batteryManager) {
    battery = batteryManager;
    testIfBatteryStatusIsUpToDate(battery);
    battery.addEventListener('levelchange', failAndFinish);
    testRunner.setPageVisibility("hidden");
    debug("page is hidden");
    setTimeout(fireNextMockBatteryInfo, 0);
}

function fireNextMockBatteryInfo() {
    setAndFireMockBatteryInfo(false, 10, 20, 0.55);
    testWithVisiblePage();
}

function testWithVisiblePage() {
    battery.removeEventListener('levelchange', failAndFinish);
    battery.addEventListener('levelchange', onLevelChange);
    testRunner.setPageVisibility("visible");
    debug("page is visible");
    setAndFireMockBatteryInfo(false, 10, 20, 0.6);
}

function onLevelChange() {
    testIfBatteryStatusIsUpToDate(battery);
    battery.removeEventListener('levelchange', onLevelChange);
    setTimeout(finishJSTest, 0);
}

function failAndFinish() {
    testFailed('received event while the page was hidden');
    setTimeout(finishJSTest, 0);
}

debug("page is visible");
navigator.getBattery().then(batteryStatusSuccess, batteryStatusFailure);
setAndFireMockBatteryInfo(false, 10, 20, 0.5);
</script>
</body>
</html>