The Tor Browser: dom/indexedDB/test/test_blob_simple.html@7e26c7da4463 (annotated)

dom/indexedDB/test/test_blob_simple.html@7e26c7da4463 (annotated)

dom/indexedDB/test/test_blob_simple.html

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 <!--
   Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/
 -->
 <html>
 <head>
   <title>Indexed Database Property Test</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
   <script type="text/javascript;version=1.7">
   function testSteps()
   {
     info("Setting up test fixtures: create an IndexedDB database and object store.");
     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;
     let objectStore = db.createObjectStore("foo", { autoIncrement: true });
     let index = objectStore.createIndex("foo", "index");
     request.onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     info("Let's create a blob and store it in IndexedDB twice.");
     const BLOB_DATA = ["fun ", "times ", "all ", "around!"];
     const INDEX_KEY = 5;
     let blob = new Blob(BLOB_DATA, { type: "text/plain" });
     let data = { blob: blob, index: INDEX_KEY };
     objectStore = db.transaction("foo", "readwrite").objectStore("foo");
     objectStore.add(data).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     let key = event.target.result;
     objectStore.add(data).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     info("Let's retrieve the blob again and verify the contents is the same.");
     objectStore = db.transaction("foo").objectStore("foo");
     objectStore.get(key).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     let fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(event.target.result.blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     info("Let's retrieve it again, create an object URL for the blob, load" +
          "it via an XMLHttpRequest, and verify the contents is the same.");
     objectStore = db.transaction("foo").objectStore("foo");
     objectStore.get(key).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     let blobURL = URL.createObjectURL(event.target.result.blob);
     let xhr = new XMLHttpRequest();
     xhr.open("GET", blobURL);
     xhr.onload = grabEventAndContinueHandler;
     xhr.send();
     yield undefined;
     URL.revokeObjectURL(blobURL);
     is(xhr.responseText, BLOB_DATA.join(""), "Correct responseText");
     info("Retrieve both blob entries from the database and verify contents.");
     objectStore = db.transaction("foo").objectStore("foo");
     objectStore.mozGetAll().onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     is(event.target.result.length, 2, "Got right number of items");
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(event.target.result[0].blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     let cursorResults = [];
     objectStore = db.transaction("foo").objectStore("foo");
     objectStore.openCursor().onsuccess = function(event) {
       let cursor = event.target.result;
       if (cursor) {
         cursorResults.push(cursor.value);
         cursor.continue();
       }
       else {
         continueToNextStep();
       }
     };
     yield undefined;
     is(cursorResults.length, 2, "Got right number of items");
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(cursorResults[0].blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     info("Retrieve blobs from database via index and verify contents.");
     let index = db.transaction("foo").objectStore("foo").index("foo");
     index.get(INDEX_KEY).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(event.target.result.blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     index = db.transaction("foo").objectStore("foo").index("foo");
     index.mozGetAll().onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     is(event.target.result.length, 2, "Got right number of items");
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(event.target.result[0].blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     cursorResults = [];
     index = db.transaction("foo").objectStore("foo").index("foo");
     index.openCursor().onsuccess = function(event) {
       let cursor = event.target.result;
       if (cursor) {
         cursorResults.push(cursor.value);
         cursor.continue();
       }
       else {
         continueToNextStep();
       }
     };
     yield undefined;
     is(cursorResults.length, 2, "Got right number of items");
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(cursorResults[0].blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(cursorResults[1].blob);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     info("Slice the the retrieved blob and verify its contents.");
     let slice = cursorResults[1].blob.slice(0, BLOB_DATA[0].length);
     fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(slice);
     event = yield undefined;
     is(event.target.result, BLOB_DATA[0], "Correct text");
     info("Send blob to a worker, read its contents there, and verify results.");
     function workerScript() {
       onmessage = function(event) {
         var reader = new FileReaderSync();
         postMessage(reader.readAsText(event.data));
         var slice = event.data.slice(1, 2);
         postMessage(reader.readAsText(slice));
       }
     }
     let url =
       URL.createObjectURL(new Blob(["(", workerScript.toSource(), ")()"]));
     let worker = new Worker(url);
     worker.postMessage(slice);
     worker.onmessage = grabEventAndContinueHandler;
     event = yield undefined;
     is(event.data, BLOB_DATA[0], "Correct text");
     event = yield undefined;
     is(event.data, BLOB_DATA[0][1], "Correct text");
     info("Store a blob back in the database, and keep holding on to the " +
          "blob, verifying that it still can be read.");
     objectStore = db.transaction("foo").objectStore("foo");
     objectStore.get(key).onsuccess = grabEventAndContinueHandler;
     event = yield undefined;
     let blobFromDB = event.target.result.blob;
     let txn = db.transaction("foo", "readwrite");
     txn.objectStore("foo").put(event.target.result, key);
     txn.oncomplete = grabEventAndContinueHandler;
     event = yield undefined;
     let fileReader = new FileReader();
     fileReader.onload = grabEventAndContinueHandler;
     fileReader.readAsText(blobFromDB);
     event = yield undefined;
     is(event.target.result, BLOB_DATA.join(""), "Correct text");
     let blobURL = URL.createObjectURL(blobFromDB);
     let xhr = new XMLHttpRequest();
     xhr.open("GET", blobURL);
     xhr.onload = grabEventAndContinueHandler;
     xhr.send();
     yield undefined;
     URL.revokeObjectURL(blobURL);
     is(xhr.responseText, BLOB_DATA.join(""), "Correct responseText");
     finishTest();
     yield undefined;
   }
   </script>
   <script type="text/javascript;version=1.7" src="helpers.js"></script>
 </head>
 <body onload="runTest();"></body>
 </html>

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dom/indexedDB/test/test_blob_simple.html