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PresentationConnection_onmessage-manual.https.html
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<!DOCTYPE html>
<meta charset="utf-8">
<title>Receiving a message through PresentationConnection</title>
<link rel="author" title="Tomoyuki Shimizu" href="https://github.com/tomoyukilabs/">
<link rel="help" href="http://w3c.github.io/presentation-api/#receiving-a-message-through-presentationconnection">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="common.js"></script>
<script src="support/stash.js"></script>
<p id="notice">
Click the button below and select the available presentation display, to start the manual test. The test passes if a "PASS" result appears.<br>
<button id="presentBtn">Start Presentation Test</button>
</p>
<script>
setup({explicit_timeout: true});
const presentBtn = document.getElementById('presentBtn');
const message1 = '1st';
const message2 = '2nd';
const message3 = new Uint8Array([51, 114, 100]); // "3rd"
const message4 = new Uint8Array([52, 116, 104]); // "4th"
const message5 = new Uint8Array([108, 97, 115, 116]); // "last"
const toUint8Array = buf => {
return buf instanceof ArrayBuffer ? new Uint8Array(buf) : buf;
}
// compare two ArrayBuffer or Uint8Array
const compare = (a, b) => {
const p = toUint8Array(a);
const q = toUint8Array(b);
return !!p && !!q && p.every((item, index) => { return item === q[index]; });
};
promise_test(t => {
const clickWatcher = new EventWatcher(t, presentBtn, 'click');
const request = new PresentationRequest(presentationUrls);
const stash = new Stash(stashIds.toController, stashIds.toReceiver);
let connection, watcher, eventWatcher;
const checkEvent = event => {
assert_true(event.isTrusted, 'a trusted event is fired');
assert_true(event instanceof MessageEvent, 'The event uses the MessageEvent interface');
assert_false(event.bubbles, 'the event does not bubble');
assert_false(event.cancelable, 'the event is not cancelable');
};
const watchEvent = (obj, watcher, type) => {
const watchHandler = new Promise(resolve => {
obj['on' + type] = evt => { resolve(evt); };
});
return Promise.all([ watchHandler, watcher.wait_for(type) ]).then(results => {
assert_equals(results[0], results[1], 'Both on' + type + ' and addEventListener pass the same event object.');
return results[0];
});
};
t.add_cleanup(() => {
if (connection) {
connection.onconnect = () => { connection.terminate(); };
if (connection.state === 'closed')
request.reconnect(connection.id);
else
connection.terminate();
}
const notice = document.getElementById('notice');
notice.parentNode.removeChild(notice);
stash.stop();
});
return Promise.all([
clickWatcher.wait_for('click'),
stash.init()
]).then(() => {
presentBtn.disabled = true;
return request.start();
}).then(c => {
connection = c;
assert_equals(connection.state, 'connecting', 'the initial state of the presentation connection is "connecting"');
assert_equals(connection.binaryType, 'arraybuffer', 'the default value of binaryType is "arraybuffer"');
// enable timeout again, cause no user action is needed from here.
t.step_timeout(() => {
t.force_timeout();
t.done();
}, 5000);
watcher = new EventWatcher(t, connection, 'connect');
return watcher.wait_for('connect');
}).then(() => {
return stash.init();
}).then(() => {
eventWatcher = new EventWatcher(t, connection, 'message');
// Tell receiving page to start sending messages, and wait for first message
return Promise.all([
stash.send('onmessage'),
watchEvent(connection, eventWatcher, 'message')
]).then(results => results[1]);
}).then(event => {
checkEvent(event);
assert_equals(event.data, message1, 'receive a string correctly');
return watchEvent(connection, eventWatcher, 'message');
}).then(event => {
checkEvent(event);
assert_equals(event.data, message2, 'receive a string correctly');
return watchEvent(connection, eventWatcher, 'message');
}).then(event => {
checkEvent(event);
assert_true(event.data instanceof ArrayBuffer, 'receive binary data as ArrayBuffer');
assert_true(compare(event.data, message3), 'receive an ArrayBuffer correctly (originally a Blob at a receiving user agent)');
return watchEvent(connection, eventWatcher, 'message');
}).then(event => {
checkEvent(event);
assert_true(event.data instanceof ArrayBuffer, 'receive binary data as ArrayBuffer');
assert_true(compare(event.data, message4), 'receive an ArrayBuffer correctly (originally an ArrayBuffer at a receiving user agent)');
return watchEvent(connection, eventWatcher, 'message');
}).then(event => {
checkEvent(event);
assert_true(event.data instanceof ArrayBuffer, 'receive binary data as ArrayBuffer');
assert_true(compare(event.data, message5), 'receive an ArrayBuffer correctly (originally an ArrayBufferView at a receiving user agent)');
connection.binaryType = 'blob';
return Promise.all([
stash.send('blob'),
watchEvent(connection, eventWatcher, 'message')
]).then(results => results[1]);
}).then(event => {
assert_true(event.data instanceof Blob, 'receive binary data as Blob');
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = resolve;
reader.onerror = reject;
reader.readAsArrayBuffer(event.data);
});
}).then(event => {
assert_true(compare(event.target.result, message5), 'receive a Blob correctly');
connection.terminate();
});
});
</script>