michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: MARIONETTE_TIMEOUT = 10000;
michael@0: 
michael@0: let battery = window.navigator.battery;
michael@0: 
michael@0: function verifyInitialState() {
michael@0:   ok(battery, "battery");
michael@0:   is(battery.level, 0.5, "battery.level");
michael@0:   runEmulatorCmd("power display", function (result) {
michael@0:     is(result.pop(), "OK", "power display successful");
michael@0:     ok(result.indexOf("capacity: 50") !== -1, "power capacity");
michael@0:     setUp();
michael@0:   });
michael@0: }
michael@0: 
michael@0: function unexpectedEvent(event) {
michael@0:   ok(false, "Unexpected " + event.type + " event");
michael@0: }
michael@0: 
michael@0: function setUp() {
michael@0:   battery.onchargingchange = unexpectedEvent;
michael@0:   battery.onlevelchange = unexpectedEvent;
michael@0:   levelUp();
michael@0: }
michael@0: 
michael@0: function changeCapacity(capacity, changeExpected, nextFunction) {
michael@0:   log("Changing power capacity to " + capacity);
michael@0:   if (changeExpected) {
michael@0:     battery.onlevelchange = function (event) {
michael@0:      battery.onlevelchange = unexpectedEvent;
michael@0:      is(event.type, "levelchange", "event.type");
michael@0:      is(battery.level, capacity / 100, "battery.level");
michael@0:      nextFunction();
michael@0:     };
michael@0:     runEmulatorCmd("power capacity " + capacity);
michael@0:   }
michael@0:   else {
michael@0:     runEmulatorCmd("power capacity " + capacity, function () {
michael@0:       is(battery.level, capacity / 100, "battery.level");
michael@0:       nextFunction();
michael@0:     });
michael@0:   }
michael@0: }
michael@0: 
michael@0: function levelUp() {
michael@0:   changeCapacity("90", true, levelDown);
michael@0: }
michael@0: 
michael@0: function levelDown() {
michael@0:   changeCapacity("10", true, levelSame);
michael@0: }
michael@0: 
michael@0: function levelSame() {
michael@0:   changeCapacity("10", false, cleanUp);
michael@0: }
michael@0: 
michael@0: function cleanUp() {
michael@0:   battery.onchargingchange = null;
michael@0:   battery.onlevelchange = function () {
michael@0:     battery.onlevelchange = null;
michael@0:     finish();
michael@0:   };
michael@0:   runEmulatorCmd("power capacity 50");
michael@0: }
michael@0: 
michael@0: verifyInitialState();