<!DOCTYPE html>
<head>
<script src="../resources/js-test.js"></script>
<script src="resources/netinfo_common.js"></script>
</head>
<body>
<script>
description('Tests the basic operation of saveData attribute in NetInfo.');

shouldBe('typeof window.internals.observeGC', '"function"',
'this test requires window.internals');

shouldBeDefined("navigator.connection");
shouldBeDefined("navigator.connection.type");
shouldBeDefined("navigator.connection.saveData");
shouldBeDefined("navigator.connection.downlinkMax");
shouldBeDefined("navigator.connection.effectiveType");
shouldBeDefined("navigator.connection.rtt");
shouldBeDefined("navigator.connection.downlink");

shouldBe("typeof connection.type", '"string"');
shouldBe('connection.type', 'initialType');
shouldBe('connection.saveData', 'false');
shouldBe('connection.downlinkMax', 'initialDownlinkMax');
shouldBe('connection.effectiveType', 'initialEffectiveType');
shouldBe('connection.rtt', 'newRtt', false, newRttMaxNoise);
shouldBe('connection.downlink', 'newDownlink', false, newDownlinkMaxNoise);


var changeListener = function(e) {
    shouldBe("typeof connection.type", '"string"');
    shouldBe('connection.type', 'initialType');
    shouldBe('connection.saveData', 'true');
    shouldBe('connection.downlinkMax', 'initialDownlinkMax');
    shouldBe('connection.effectiveType', 'initialEffectiveType');
    shouldBe('connection.rtt', 'newRtt', false, newRttMaxNoise);
    shouldBe('connection.downlink', 'newDownlink', false, newDownlinkMaxNoise);
    connection.removeEventListener('change', changeListener);
    internals.setSaveDataEnabled(false);
    finishJSTest();
}

connection.addEventListener('change', changeListener);
// Changing saveData should trigger a callback.
internals.setSaveDataEnabled(true);

</script>
</body>
</html>