tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

test_fileReaderSync.xhtml (6530B)

      1 <?xml version="1.0"?>
      2 <?xml-stylesheet type="text/css" href="chrome://global/skin"?>
      3 <?xml-stylesheet type="text/css" href="chrome://mochikit/content/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 src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
     10  <script type="application/javascript" src="dom_worker_helper.js"/>
     11 
     12  <!-- test results are displayed in the html:body -->
     13  <body xmlns="http://www.w3.org/1999/xhtml">
     14  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=664783"
     15     target="_blank">Mozilla Bug 664783</a>
     16 
     17  <div id="content" style="display: none">
     18    <input id="fileList" type="file"></input>
     19  </div>
     20 
     21  </body>
     22 
     23  <!-- test code goes here -->
     24  <script type="application/javascript">
     25  <![CDATA[
     26 
     27  /** Test for Bug 664783 */
     28 
     29  var fileNum = 0;
     30 
     31  /**
     32   * Create a file which contains the given data and optionally adds the specified file extension.
     33   */
     34  function createFileWithData(fileData, /** optional */ extension) {
     35    var testFile = Cc["@mozilla.org/file/directory_service;1"]
     36                       .getService(Ci.nsIProperties)
     37                       .get("ProfD", Ci.nsIFile);
     38    var fileExtension = (extension == undefined) ? "" : "." + extension;
     39    testFile.append("workerFileReaderSync" + fileNum++ + fileExtension);
     40 
     41    var outStream = Cc["@mozilla.org/network/file-output-stream;1"]
     42                        .createInstance(Ci.nsIFileOutputStream);
     43    outStream.init(testFile, 0x02 | 0x08 | 0x20, // write, create, truncate
     44                   0o666, 0);
     45    outStream.write(fileData, fileData.length);
     46    outStream.close();
     47 
     48    var fileList = document.getElementById('fileList');
     49    fileList.value = testFile.path;
     50 
     51    return fileList.files[0];
     52  }
     53 
     54  function convertToUTF16(s) {
     55    res = "";
     56    for (var i = 0; i < s.length; ++i) {
     57      c = s.charCodeAt(i);
     58      res += String.fromCharCode(c & 255, c >>> 8);
     59    }
     60    return res;
     61  }
     62 
     63  /**
     64   * Converts the given string to a data URL of the specified mime type.
     65   */
     66  function convertToDataURL(mime, s) {
     67    return "data:" + mime + ";base64," + btoa(s);
     68  }
     69 
     70  /**
     71   * Create a worker to read a file containing fileData using FileReaderSync and
     72   * checks the return type against the expected type. Optionally set an encoding
     73   * for reading the file as text.
     74   */
     75  function readFileData(fileData, expectedText, /** optional */ encoding) {
     76    var worker = new Worker("fileReaderSync_worker.js");
     77 
     78    worker.onmessage = function(event) {
     79      is(event.data.text, expectedText, "readAsText in worker returned incorrect result.");
     80      is(event.data.bin, fileData, "readAsBinaryString in worker returned incorrect result.");
     81      is(event.data.url, convertToDataURL("application/octet-stream", fileData), "readAsDataURL in worker returned incorrect result.");
     82      is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
     83      finish();
     84    };
     85 
     86    worker.onerror = function(event) {
     87      ok(false, "Worker had an error: " + event.message);
     88      finish();
     89    };
     90 
     91    var params = {file: createFileWithData(fileData), encoding};
     92 
     93    worker.postMessage(params);
     94 
     95    waitForWorkerFinish();
     96  }
     97 
     98  /**
     99   * Create a worker which reuses a FileReaderSync to read multiple files as DataURLs.
    100   */
    101  function reuseReaderForURL(files, expected) {
    102    var worker = new Worker("fileReaderSync_worker.js");
    103 
    104    worker.onerror = function(event) {
    105      ok(false, "Worker had an error: " + event.message);
    106      finish();
    107    };
    108 
    109    var k = 0;
    110    worker.onmessage = function(event) {
    111      is(event.data.url, expected[k], "readAsDataURL in worker returned incorrect result when reusing FileReaderSync.");
    112      k++;
    113      finish();
    114    };
    115 
    116    for (var i = 0; i < files.length; ++i) {
    117      var params = {file: files[i], encoding: undefined};
    118      worker.postMessage(params);
    119      waitForWorkerFinish();
    120    }
    121  }
    122 
    123  /**
    124   * Create a worker which reuses a FileReaderSync to read multiple files as text.
    125   */
    126  function reuseReaderForText(fileData, expected) {
    127    var worker = new Worker("fileReaderSync_worker.js");
    128 
    129    worker.onerror = function(event) {
    130      ok(false, "Worker had an error: " + event.message);
    131      finish();
    132    };
    133 
    134    var k = 0;
    135    worker.onmessage = function(event) {
    136      is(event.data.text, expected[k++], "readAsText in worker returned incorrect result when reusing FileReaderSync.");
    137      finish();
    138    };
    139 
    140    for (var i = 0; i < fileData.length; ++i) {
    141      var params = {file: createFileWithData(fileData[i]), encoding: undefined};
    142      worker.postMessage(params);
    143      waitForWorkerFinish();
    144    }
    145  }
    146 
    147 
    148  /**
    149   * Creates a a worker which reads a file containing fileData as an ArrayBuffer.
    150   * Verifies that the ArrayBuffer when interpreted as a string matches the original data.
    151   */
    152  function readArrayBuffer(fileData) {
    153    var worker = new Worker("fileReaderSync_worker.js");
    154 
    155    worker.onmessage = function(event) {
    156      var view = new Uint8Array(event.data.arrayBuffer);
    157      is(event.data.arrayBuffer.byteLength, fileData.length, "readAsArrayBuffer returned buffer of incorrect length.");
    158      is(String.fromCharCode.apply(String, view), fileData, "readAsArrayBuffer returned buffer containing incorrect data.");
    159      finish();
    160    };
    161 
    162    worker.onerror = function(event) {
    163      ok(false, "Worker had an error: " + event.message);
    164      finish();
    165    };
    166 
    167    var params = {file: createFileWithData(fileData), encoding: undefined};
    168 
    169    worker.postMessage(params);
    170 
    171    waitForWorkerFinish();
    172  }
    173 
    174  // Empty file.
    175  readFileData("", "");
    176 
    177  // Typical use case.
    178  readFileData("text", "text");
    179 
    180  // Test reading UTF-16 characters.
    181  readFileData(convertToUTF16("text"), "text", "UTF-16");
    182 
    183  // First read a file of type "text/plain", then read a file of type "application/octet-stream".
    184  reuseReaderForURL([createFileWithData("text", "txt"), createFileWithData("text")],
    185                    [convertToDataURL("text/plain", "text"),
    186                     convertToDataURL("application/octet-stream", "text")]);
    187 
    188  // First read UTF-16 characters marked using BOM, then read UTF-8 characters.
    189  reuseReaderForText([convertToUTF16("\ufefftext"), "text"],
    190                     ["text", "text"]);
    191 
    192  // Reading data as ArrayBuffer.
    193  readArrayBuffer("");
    194  readArrayBuffer("text");
    195 
    196  ]]>
    197  </script>
    198 </window>