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function synthTestQueue(aTestArgs, aEndFunc) {
var utterances = [];
for (var i in aTestArgs) {
var uargs = aTestArgs[i][0];
var win = uargs.win || window;
var u = new win.SpeechSynthesisUtterance(uargs.text);
if (uargs.args) {
for (var attr in uargs.args)
u[attr] = uargs.args[attr];
}
function onend_handler(e) {
is(e.target, utterances.shift(), "Target matches utterances");
ok(!speechSynthesis.speaking, "speechSynthesis is not speaking.");
if (utterances.length) {
ok(speechSynthesis.pending, "other utterances queued");
} else {
ok(!speechSynthesis.pending, "queue is empty, nothing pending.");
if (aEndFunc)
aEndFunc();
}
}
u.addEventListener('start',
(function (expectedUri) {
return function (e) {
if (expectedUri) {
var chosenVoice = SpecialPowers.wrap(e).target.chosenVoiceURI;
is(chosenVoice, expectedUri, "Incorrect URI is used");
}
};
})(aTestArgs[i][1] ? aTestArgs[i][1].uri : null));
u.addEventListener('end', onend_handler);
u.addEventListener('error', onend_handler);
u.addEventListener('error',
(function (expectedError) {
return function onerror_handler(e) {
ok(expectedError, "Error in speech utterance '" + e.target.text + "'");
};
})(aTestArgs[i][1] ? aTestArgs[i][1].err : false));
utterances.push(u);
win.speechSynthesis.speak(u);
}
ok(!speechSynthesis.speaking, "speechSynthesis is not speaking yet.");
ok(speechSynthesis.pending, "speechSynthesis has an utterance queued.");
}
function loadFrame(frameId) {
return new Promise(function(resolve, reject) {
var frame = document.getElementById(frameId);
frame.addEventListener('load', function (e) {
frame.contentWindow.document.title = frameId;
resolve(frame);
});
frame.src = 'data:text/html,' + encodeURI('<html><head></head><body></body></html>');
});
}
function waitForVoices(win) {
return new Promise(resolve => {
function resolver() {
if (win.speechSynthesis.getVoices().length) {
win.speechSynthesis.removeEventListener('voiceschanged', resolver);
resolve();
}
}
win.speechSynthesis.addEventListener('voiceschanged', resolver);
resolver();
});
}
function loadSpeechTest(fileName, prefs, frameId="testFrame") {
loadFrame(frameId).then(frame => {
waitForVoices(frame.contentWindow).then(
() => document.getElementById("testFrame").src = fileName);
});
}
function testSynthState(win, expectedState) {
for (var attr in expectedState) {
is(win.speechSynthesis[attr], expectedState[attr],
win.document.title + ": '" + attr + '" does not match');
}
}
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