LayoutTests for writing empty Blob/File/FileList to IndexedDB.

LayoutTests/storage/indexeddb/empty-blob-file-expected.txt

+Confirm that IndexedDB can store an empty Blob/File/FileList
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
+
+dbname = "empty-blob-file.html"
+indexedDB.deleteDatabase(dbname)
+indexedDB.open(dbname)
+store = db.createObjectStore('storeName')
+store.put('value', 'key')
+
+testEmptyBlob():
+PASS FileReader != null is true
+blob = new Blob([])
+
+validateResult(blob):
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+store.put(blob, 'blobkey')
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+request = store.get('blobkey')
+PASS event.target.result.size == 0 is true
+
+testEmptyDataBlob():
+PASS FileReader != null is true
+blob = new Blob(['', '', ''])
+
+validateResult(blob):
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+store.put(blob, 'blobkey')
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+request = store.get('blobkey')
+PASS event.target.result.size == 0 is true
+
+testEmptyNestedBlob():
+PASS FileReader != null is true
+blob = new Blob(['', new Blob([]), ''])
+
+validateResult(blob):
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+store.put(blob, 'blobkey')
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+request = store.get('blobkey')
+PASS event.target.result.size == 0 is true
+
+testEmptyFile():
+file = emptyFileInput.files[0]
+
+validateResult(file):
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+store.put(file, 'filekey')
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+request = store.get('filekey')
+PASS event.target.result.size == 0 is true
+
+testEmptyFileList():
+fileList = emptyFileListInput.files
+
+validateResult(fileList):
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+store.put(fileList, 'fileListkey')
+transaction = db.transaction('storeName', 'readwrite')
+store = transaction.objectStore('storeName')
+request = store.get('fileListkey')
+PASS event.target.result.length == 0 is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+