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