dom/workers/test/test_fileReaderSync.xul@6474c204b198
dom/workers/test/test_fileReaderSync.xul
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <?xml version="1.0"?>
2 <?xml-stylesheet type="text/css" href="chrome://global/skin"?>
3 <?xml-stylesheet type="text/css" href="/tests/SimpleTest/test.css"?>
4 <!--
5 https://bugzilla.mozilla.org/show_bug.cgi?id=664783
6 -->
7 <window title="Mozilla Bug 664783"
8 xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
9 <script type="application/javascript"
10 src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
11 <script type="application/javascript" src="dom_worker_helper.js"/>
13 <!-- test results are displayed in the html:body -->
14 <body xmlns="http://www.w3.org/1999/xhtml">
15 <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=664783"
16 target="_blank">Mozilla Bug 664783</a>
18 <div id="content" style="display: none">
19 <input id="fileList" type="file"></input>
20 </div>
22 </body>
24 <!-- test code goes here -->
25 <script type="application/javascript">
26 <![CDATA[
28 /** Test for Bug 664783 **/
30 var fileNum = 0;
32 /**
33 * Create a file which contains the given data and optionally adds the specified file extension.
34 */
35 function createFileWithData(fileData, /** optional */ extension) {
36 var testFile = Components.classes["@mozilla.org/file/directory_service;1"]
37 .getService(Components.interfaces.nsIProperties)
38 .get("ProfD", Components.interfaces.nsIFile);
39 var fileExtension = (extension == undefined) ? "" : "." + extension;
40 testFile.append("workerFileReaderSync" + fileNum++ + fileExtension);
42 var outStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
43 .createInstance(Components.interfaces.nsIFileOutputStream);
44 outStream.init(testFile, 0x02 | 0x08 | 0x20, // write, create, truncate
45 0666, 0);
46 outStream.write(fileData, fileData.length);
47 outStream.close();
49 var fileList = document.getElementById('fileList');
50 fileList.value = testFile.path;
52 return fileList.files[0];
53 }
55 function convertToUTF16(s) {
56 res = "";
57 for (var i = 0; i < s.length; ++i) {
58 c = s.charCodeAt(i);
59 res += String.fromCharCode(c & 255, c >>> 8);
60 }
61 return res;
62 }
64 /**
65 * Converts the given string to a data URL of the specified mime type.
66 */
67 function convertToDataURL(mime, s) {
68 return "data:" + mime + ";base64," + btoa(s);
69 }
71 /**
72 * Create a worker to read a file containing fileData using FileReaderSync and
73 * checks the return type against the expected type. Optionally set an encoding
74 * for reading the file as text.
75 */
76 function readFileData(fileData, expectedText, /** optional */ encoding) {
77 var worker = new Worker("fileReaderSync_worker.js");
79 worker.onmessage = function(event) {
80 is(event.data.text, expectedText, "readAsText in worker returned incorrect result.");
81 is(event.data.bin, fileData, "readAsBinaryString in worker returned incorrect result.");
82 is(event.data.url, convertToDataURL("application/octet-stream", fileData), "readAsDataURL in worker returned incorrect result.");
83 is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
84 finish();
85 };
87 worker.onerror = function(event) {
88 ok(false, "Worker had an error: " + event.data);
89 finish();
90 };
92 var params = {file: createFileWithData(fileData), encoding: encoding};
94 worker.postMessage(params);
96 waitForWorkerFinish();
97 }
99 /**
100 * Create a worker which reuses a FileReaderSync to read multiple files as DataURLs.
101 */
102 function reuseReaderForURL(files, expected) {
103 var worker = new Worker("fileReaderSync_worker.js");
105 worker.onerror = function(event) {
106 ok(false, "Worker had an error: " + event.data);
107 finish();
108 };
110 var k = 0;
111 worker.onmessage = function(event) {
112 is(event.data.url, expected[k], "readAsDataURL in worker returned incorrect result when reusing FileReaderSync.");
113 k++;
114 finish();
115 };
117 for (var i = 0; i < files.length; ++i) {
118 var params = {file: files[i], encoding: undefined};
119 worker.postMessage(params);
120 waitForWorkerFinish();
121 }
122 }
124 /**
125 * Create a worker which reuses a FileReaderSync to read multiple files as text.
126 */
127 function reuseReaderForText(fileData, expected) {
128 var worker = new Worker("fileReaderSync_worker.js");
130 worker.onerror = function(event) {
131 ok(false, "Worker had an error: " + event.data);
132 finish();
133 };
135 var k = 0;
136 worker.onmessage = function(event) {
137 is(event.data.text, expected[k++], "readAsText in worker returned incorrect result when reusing FileReaderSync.");
138 finish();
139 };
141 for (var i = 0; i < fileData.length; ++i) {
142 var params = {file: createFileWithData(fileData[i]), encoding: undefined};
143 worker.postMessage(params);
144 waitForWorkerFinish();
145 }
146 }
149 /**
150 * Creates a a worker which reads a file containing fileData as an ArrayBuffer.
151 * Verifies that the ArrayBuffer when interpreted as a string matches the original data.
152 */
153 function readArrayBuffer(fileData) {
154 var worker = new Worker("fileReaderSync_worker.js");
156 worker.onmessage = function(event) {
157 var view = new Uint8Array(event.data.arrayBuffer);
158 is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
159 is(String.fromCharCode.apply(String, view), fileData, "readAsArrayBuffer returned buffer containing incorrect data.");
160 finish();
161 };
163 worker.onerror = function(event) {
164 ok(false, "Worker had an error: " + event.data);
165 finish();
166 };
168 var params = {file: createFileWithData(fileData), encoding: undefined};
170 worker.postMessage(params);
172 waitForWorkerFinish();
173 }
175 // Empty file.
176 readFileData("", "");
178 // Typical use case.
179 readFileData("text", "text");
181 // Test reading UTF-16 characters.
182 readFileData(convertToUTF16("text"), "text", "UTF-16");
184 // First read a file of type "text/plain", then read a file of type "application/octet-stream".
185 reuseReaderForURL([createFileWithData("text", "txt"), createFileWithData("text")],
186 [convertToDataURL("text/plain", "text"),
187 convertToDataURL("application/octet-stream", "text")]);
189 // First read UTF-16 characters marked using BOM, then read UTF-8 characters.
190 reuseReaderForText([convertToUTF16("\ufefftext"), "text"],
191 ["text", "text"]);
193 // Reading data as ArrayBuffer.
194 readArrayBuffer("");
195 readArrayBuffer("text");
197 ]]>
198 </script>
199 </window>
