third_party/WebKit/LayoutTests/fast/filesystem/file-metadata-after-write.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../resources/js-test.js"></script>
   5 </head>
   6 <body>
   7 <div>This verifies File.size (for a file from FileSystem API) always returns the fresh size even after the file is modified.</div>
   8 <div id='console'></div>
   9 <script>
  10
  11 if (window.testRunner) {
  12     testRunner.dumpAsText();
  13     testRunner.waitUntilDone();
  14 }
  15
  16 var fileEntryForCleanup;
  17 var testFile;
  18 var testText1 = '1234567890';
  19 var testText2 = 'abcdefghijklmnopqrstuvwxyz';
  20
  21 webkitRequestFileSystem(
  22     window.TEMPORARY, 100, function(fs) {
  23         fs.root.getFile('test', {create:true}, function(entry) {
  24             fileEntryForCleanup = entry;
  25             writeTextToFile(entry, testText1, function() {
  26                 log('Write succeeded.');
  27                 entry.file(onWrittenFile.bind(this, entry), onError);
  28             });
  29         }, onError);
  30     }, onError);
  31
  32 function onWrittenFile(entry, file) {
  33     testFile = file;
  34     shouldBe('testFile.size', 'testText1.length');
  35     // Write into this file again.
  36     writeTextToFile(entry, testText2, function() {
  37         log('Write succeeded.');
  38         entry.file(function() {
  39             // The file size should be updated.
  40             shouldBe('testFile.size', 'testText2.length');
  41             cleanup();
  42         }, onError);
  43     });
  44 }
  45
  46 function writeTextToFile(entry, contents, successCallback)
  47 {
  48     log('Writing ' + contents + ' to the file...');
  49     entry.createWriter(function(writer) {
  50         log('Created a writer.');
  51         writer.write(new Blob([contents], {type:'text/plain'}));
  52         writer.onwriteend = successCallback;
  53         writer.onerror = onError;
  54     });
  55 }
  56
  57 function log(text)
  58 {
  59     var console = document.getElementById('console');
  60     console.appendChild(document.createTextNode(text));
  61     console.appendChild(document.createElement('br'));
  62 }
  63
  64 function onError(e)
  65 {
  66     log('ERROR: ' + e.name);
  67     console.log(e);
  68     cleanup();
  69 }
  70
  71 function cleanup()
  72 {
  73     if (fileEntryForCleanup) {
  74         fileEntryForCleanup.remove(endTest, endTest);
  75         return;
  76     }
  77     endTest();
  78 }
  79
  80 function endTest()
  81 {
  82     if (testRunner)
  83         testRunner.notifyDone();
  84 }
  85
  86 </script>
  87 </body>
  88 </html>