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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
<title>Indexed Database Blob Read From Worker</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="text/javascript">
/**
* Create an IndexedDB-backed Blob, send it to the worker, try and read the
* contents of the Blob from the worker using an XHR. Ideally, we don't
* deadlock the main thread.
*/
function* testSteps()
{
const BLOB_DATA = ["Green"];
const BLOB_TYPE = "text/plain";
const BLOB_SIZE = BLOB_DATA.join("").length;
info("Setting up");
let request = indexedDB.open(window.location.pathname, 1);
request.onerror = errorHandler;
request.onupgradeneeded = grabEventAndContinueHandler;
request.onsuccess = unexpectedSuccessHandler;
let event = yield undefined;
let db = event.target.result;
db.onerror = errorHandler;
ok(db, "Created database");
info("Creating objectStore");
let objectStore = db.createObjectStore("foo", { autoIncrement: true });
request.onupgradeneeded = unexpectedSuccessHandler;
request.onsuccess = grabEventAndContinueHandler;
event = yield undefined;
ok(true, "Opened database");
let blob = new Blob(BLOB_DATA, { type: BLOB_TYPE });
info("Adding blob to database");
objectStore = db.transaction("foo", "readwrite").objectStore("foo");
objectStore.add(blob).onsuccess = grabEventAndContinueHandler;
event = yield undefined;
let blobKey = event.target.result;
ok(blobKey, "Got a key for the blob");
info("Getting blob from the database");
objectStore = db.transaction("foo").objectStore("foo");
objectStore.get(blobKey).onsuccess = grabEventAndContinueHandler;
event = yield undefined;
blob = event.target.result;
ok(blob instanceof Blob, "Got a blob");
is(blob.size, BLOB_SIZE, "Correct size");
is(blob.type, BLOB_TYPE, "Correct type");
info("Sending blob to a worker");
function workerScript() {
/* eslint-env worker */
onmessage = function(event) {
var blob = event.data;
var blobUrl = URL.createObjectURL(blob);
var xhr = new XMLHttpRequest();
xhr.open("GET", blobUrl, true);
xhr.responseType = "text";
xhr.onload = function() {
postMessage({ data: xhr.response });
URL.revokeObjectURL(blobUrl);
};
xhr.onerror = function() {
postMessage({ data: null });
URL.revokeObjectURL(blobUrl);
};
xhr.send();
};
}
let workerScriptUrl =
URL.createObjectURL(new Blob(["(", workerScript.toString(), ")()"]));
let xhrWorker = new Worker(workerScriptUrl);
xhrWorker.postMessage(blob);
xhrWorker.onmessage = grabEventAndContinueHandler;
event = yield undefined;
is(event.data.data, "Green", "XHR returned expected payload.");
xhrWorker.terminate();
URL.revokeObjectURL(workerScriptUrl);
finishTest();
}
</script>
<script type="text/javascript" src="helpers.js"></script>
</head>
<body onload="runTest();"></body>
</html>
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