third_party/WebKit/LayoutTests/storage/indexeddb/empty-filesystem-file.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3 <script src="resources/shared.js"></script>
   4 <script>
   5
   6 description("Confirm that IndexedDB can store an empty File from the Filesystem API");
   7
   8 function prepareDatabase()
   9 {
  10     db = event.target.result;
  11     var trans = event.target.transaction;
  12     evalAndLog("store = db.createObjectStore('storeName')");
  13     evalAndLog("store.put('value', 'key')");
  14     trans.onerror = unexpectedErrorCallback;
  15     trans.onabort = unexpectedAbortCallback;
  16 }
  17
  18 var fileValidation = ".size == 0";
  19 function testEmptyFilesystemFile()
  20 {
  21     preamble();
  22     evalAndLog("file = window.emptyFile");
  23     validateResult("file", fileValidation, cleanupFs);
  24 }
  25
  26 function validateResult(variable, validation, onSuccess)
  27 {
  28     var keyName = variable + "key";
  29     debug("");
  30     debug("validateResult(" + variable + "):");
  31     shouldBeTrue(variable + validation);
  32     evalAndLog("transaction = db.transaction('storeName', 'readwrite')");
  33     evalAndLog("store = transaction.objectStore('storeName')");
  34     evalAndLog("store.put(" + variable + ", '" + keyName + "')");
  35     transaction.onerror = unexpectedErrorCallback;
  36     transaction.onabort = unexpectedAbortCallback;
  37     var onGetSuccess = function (e) {
  38       shouldBeTrue("event.target.result" + validation);
  39       onSuccess();
  40     }
  41     transaction.oncomplete = function () {
  42       doRead(keyName, onGetSuccess);
  43     }
  44 }
  45
  46 function doRead(keyName, onSuccess)
  47 {
  48     evalAndLog("transaction = db.transaction('storeName', 'readwrite')");
  49     evalAndLog("store = transaction.objectStore('storeName')");
  50     evalAndLog("request = store.get('" + keyName + "')");
  51     request.onsuccess = onSuccess;
  52     transaction.onerror = unexpectedErrorCallback;
  53     transaction.onabort = unexpectedAbortCallback;
  54 }
  55
  56 function fsError(error)
  57 {
  58     debug("Filesystem error:" + error.name);
  59     cleanupFs();
  60 }
  61 function fsCreated(fs)
  62 {
  63     debug("Got FileSystem:" + fs.name);
  64     window.fileSystem = fs;
  65
  66     fs.root.getFile("empty.txt", {create: true}, function(entry) {
  67         entry.file(function(file) {
  68             window.emptyFile = file;
  69             indexedDBTest(prepareDatabase, testEmptyFilesystemFile);
  70         });
  71     }, fsError);
  72 }
  73
  74 if (window.webkitRequestFileSystem)
  75     window.webkitRequestFileSystem(TEMPORARY, 100, fsCreated, fsError);
  76 else
  77     alert("This test requires the FileSystem API");
  78
  79 function cleanupFs()
  80 {
  81     if (window.fileSystem) {
  82         var fs = window.fileSystem;
  83         // cleanupFs shouldn't get called again if an error occurs below.
  84         window.fileSystem = null;
  85         fs.root.getFile("empty.txt", {create: false}, function (entry) {
  86             entry.remove(finishJSTest, fsError);
  87         }, fsError);
  88     }
  89 }
  90 </script>