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Quelle test_fileReaderSync.xhtml
Sprache: unbekannt
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<?xml version="1.0"?>
<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/t est.css"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=664783
-->
<window title="Mozilla Bug 664783"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
<script type="application/javascript" src="dom_worker_helper.js"/>
<!-- test results are displayed in the html:body -->
<body xmlns="http://www.w3.org/1999/xhtml">
<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=664783"
target="_blank">Mozilla Bug 664783</a>
<div id="content" style="display: none">
<input id="fileList" type="file"></input>
</div>
</body>
<!-- test code goes here -->
<script type="application/javascript">
<![CDATA[
/** Test for Bug 664783 **/
var fileNum = 0;
/**
* Create a file which contains the given data and optionally adds the specified file extension.
*/
function createFileWithData(fileData, /** optional */ extension) {
var testFile = Cc["@mozilla.org/file/directory_service;1"]
.getService(Ci.nsIProperties)
.get("ProfD", Ci.nsIFile);
var fileExtension = (extension == undefined) ? "" : "." + extension;
testFile.append("workerFileReaderSync" + fileNum++ + fileExtension);
var outStream = Cc["@mozilla.org/network/file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
outStream.init(testFile, 0x02 | 0x08 | 0x20, // write, create, truncate
0o666, 0);
outStream.write(fileData, fileData.length);
outStream.close();
var fileList = document.getElementById('fileList');
fileList.value = testFile.path;
return fileList.files[0];
}
function convertToUTF16(s) {
res = "";
for (var i = 0; i < s.length; ++i) {
c = s.charCodeAt(i);
res += String.fromCharCode(c & 255, c >>> 8);
}
return res;
}
/**
* Converts the given string to a data URL of the specified mime type.
*/
function convertToDataURL(mime, s) {
return "data:" + mime + ";base64," + btoa(s);
}
/**
* Create a worker to read a file containing fileData using FileReaderSync and
* checks the return type against the expected type. Optionally set an encoding
* for reading the file as text.
*/
function readFileData(fileData, expectedText, /** optional */ encoding) {
var worker = new Worker("fileReaderSync_worker.js");
worker.onmessage = function(event) {
is(event.data.text, expectedText, "readAsText in worker returned incorrect result.");
is(event.data.bin, fileData, "readAsBinaryString in worker returned incorrect result.");
is(event.data.url, convertToDataURL("application/octet-stream", fileData), "readAsDataURL in worker returned incorrect result.");
is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
finish();
};
worker.onerror = function(event) {
ok(false, "Worker had an error: " + event.message);
finish();
};
var params = {file: createFileWithData(fileData), encoding};
worker.postMessage(params);
waitForWorkerFinish();
}
/**
* Create a worker which reuses a FileReaderSync to read multiple files as DataURLs.
*/
function reuseReaderForURL(files, expected) {
var worker = new Worker("fileReaderSync_worker.js");
worker.onerror = function(event) {
ok(false, "Worker had an error: " + event.message);
finish();
};
var k = 0;
worker.onmessage = function(event) {
is(event.data.url, expected[k], "readAsDataURL in worker returned incorrect result when reusing FileReaderSync.");
k++;
finish();
};
for (var i = 0; i < files.length; ++i) {
var params = {file: files[i], encoding: undefined};
worker.postMessage(params);
waitForWorkerFinish();
}
}
/**
* Create a worker which reuses a FileReaderSync to read multiple files as text.
*/
function reuseReaderForText(fileData, expected) {
var worker = new Worker("fileReaderSync_worker.js");
worker.onerror = function(event) {
ok(false, "Worker had an error: " + event.message);
finish();
};
var k = 0;
worker.onmessage = function(event) {
is(event.data.text, expected[k++], "readAsText in worker returned incorrect result when reusing FileReaderSync.");
finish();
};
for (var i = 0; i < fileData.length; ++i) {
var params = {file: createFileWithData(fileData[i]), encoding: undefined};
worker.postMessage(params);
waitForWorkerFinish();
}
}
/**
* Creates a a worker which reads a file containing fileData as an ArrayBuffer.
* Verifies that the ArrayBuffer when interpreted as a string matches the original data.
*/
function readArrayBuffer(fileData) {
var worker = new Worker("fileReaderSync_worker.js");
worker.onmessage = function(event) {
var view = new Uint8Array(event.data.arrayBuffer);
is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
is(String.fromCharCode.apply(String, view), fileData, "readAsArrayBuffer returned buffer containing incorrect data.");
finish();
};
worker.onerror = function(event) {
ok(false, "Worker had an error: " + event.message);
finish();
};
var params = {file: createFileWithData(fileData), encoding: undefined};
worker.postMessage(params);
waitForWorkerFinish();
}
// Empty file.
readFileData("", "");
// Typical use case.
readFileData("text", "text");
// Test reading UTF-16 characters.
readFileData(convertToUTF16("text"), "text", "UTF-16");
// First read a file of type "text/plain", then read a file of type "application/octet-stream".
reuseReaderForURL([createFileWithData("text", "txt"), createFileWithData("text")],
[convertToDataURL("text/plain", "text"),
convertToDataURL("application/octet-stream", "text")]);
// First read UTF-16 characters marked using BOM, then read UTF-8 characters.
reuseReaderForText([convertToUTF16("\ufefftext"), "text"],
["text", "text"]);
// Reading data as ArrayBuffer.
readArrayBuffer("");
readArrayBuffer("text");
]]>
</script>
</window>
[ Dauer der Verarbeitung: 0.2 Sekunden
(vorverarbeitet)
]
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2026-04-02
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