third_party/WebKit/LayoutTests/fast/filesystem/resources/file-writer-abort-depth.js

   1 if (this.importScripts) {
   2     importScripts('fs-worker-common.js');
   3     importScripts('../../../resources/js-test.js');
   4     importScripts('file-writer-utils.js');
   5 }
   6
   7 description("Test that FileWriter defends against infinite recursion via abort.");
   8
   9 var sawWriteStart;
  10 var sawAbort;
  11 var sawWriteEnd;
  12 var writer;
  13 var blob = new Blob(["lorem ipsum"]);
  14 var recursionDepth = 0;
  15 var method;
  16 var testsRun = 0;
  17
  18 function onWriteStart(e) {
  19     testPassed("Calling abort");
  20     ++recursionDepth;
  21     writer.abort();
  22 }
  23
  24 // We should always abort before completion.
  25 function onWrite(e) {
  26     testFailed("In onWrite.");
  27 }
  28
  29 function onAbort(e) {
  30     testPassed("Saw abort");
  31     try {
  32       method();
  33     } catch (ex) {
  34       assert(ex.name == 'SecurityError');
  35       testPassed("Saw security error");
  36     }
  37 }
  38
  39 function onWriteEnd(e) {
  40     --recursionDepth;
  41     testPassed("Saw writeend.");
  42     if (!recursionDepth) {
  43         ++testsRun;
  44         if (testsRun == 1) {
  45             method = function() {
  46                 testPassed("Calling truncate.");
  47                 writer.truncate(7);
  48             }
  49             setTimeout(method, 0);  // Invoke from the top level, so that we're not already in a handler.
  50         } else {
  51             cleanUp();
  52         }
  53     }
  54 }
  55
  56 function runTest(unusedFileEntry, fileWriter) {
  57     writer = fileWriter;
  58     method = function () {
  59         testPassed("Calling write.");
  60         writer.write(blob);
  61     }
  62     fileWriter.onerror = onError;
  63     fileWriter.onabort = onAbort;
  64     fileWriter.onwritestart = onWriteStart;
  65     fileWriter.onwrite = onWrite;
  66     fileWriter.onwriteend = onWriteEnd;
  67     method();
  68 }
  69
  70 var jsTestIsAsync = true;
  71 setupAndRunTest(2*1024*1024, 'file-writer-abort-depth', runTest);