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<!DOCTYPE html>
<meta charset="utf-8">
<title>Sending a message through PresentationConnection</title>
<link rel="help" href="http://w3c.github.io/presentation-api/#sending-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;
}
// convert ArrayBuffer or Uint8Array into string
const toText = buf => {
const arr = toUint8Array(buf);
return !buf ? null : arr.reduce((result, item) => {
return result + String.fromCharCode(item);
}, '');
}
promise_test(t => {
const clickWatcher = new EventWatcher(t, presentBtn, 'click');
const stash = new Stash(stashIds.toController, stashIds.toReceiver);
const request = new PresentationRequest(presentationUrls);
let connection, watcher;
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 clickWatcher.wait_for('click').then(() => {
presentBtn.disabled = true;
return request.start();
}).then(c => {
connection = c;
// send data in "connecting" state (throws an exception)
assert_equals(connection.state, 'connecting', 'the initial state of the presentation connection is "connecting"');
assert_throws_dom('InvalidStateError', () => {
connection.send('');
}, 'an InvalidStateError is thrown if the state is "connecting"');
// enable timeout again, cause no user action is needed from here.
t.step_timeout(() => {
t.force_timeout();
t.done();
}, 10000);
watcher = new EventWatcher(t, connection, ['connect', 'close', 'terminate']);
return watcher.wait_for('connect');
}).then(() => {
return stash.init();
}).then(() => {
return Promise.all([ stash.send('send'), stash.receive() ]);
}).then(results => {
// send messages
connection.send(message1); // string
connection.send(message2); // string
connection.send(new Blob([message3])); // Blob
connection.send(message4.buffer); // ArrayBuffer
connection.send(message5); // ArrayBufferView
return stash.receive();
}).then(stash => {
// verify messages
const results = JSON.parse(stash);
assert_true(!!results[0] && results[0].type === 'text' && results[0].data === message1, 'send a string correctly');
assert_true(!!results[1] && results[1].type === 'text' && results[1].data === message2, 'send a string correctly');
assert_true(!!results[2] && results[2].type === 'binary' && results[2].data === toText(message3), 'send a Blob correctly');
assert_true(!!results[3] && results[3].type === 'binary' && results[3].data === toText(message4), 'send a ArrayBuffer correctly');
assert_true(!!results[4] && results[4].type === 'binary' && results[4].data === toText(message5), 'send a ArrayBufferView correctly');
// send data in "closed" state (throws an exception)
connection.close();
return watcher.wait_for('close');
}).then(() => {
assert_equals(connection.state, 'closed', 'the state is set to "closed" when the presentation connection is closed');
assert_throws_dom('InvalidStateError', () => {
connection.send('');
}, 'an InvalidStateError is thrown if the state is "closed"');
// reconnect and terminate the connection
return request.reconnect(connection.id);
}).then(() => {
return watcher.wait_for('connect');
}).then(() => {
// send data in "terminated" state (throws an exception)
connection.terminate();
return watcher.wait_for('terminate');
}).then(() => {
assert_equals(connection.state, 'terminated', 'the state is set to "terminated" when the presentation connection is terminated');
assert_throws_dom('InvalidStateError', () => {
connection.send('');
}, 'an InvalidStateError is thrown if the state is "terminated"');
});
});
</script>