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

LayoutTests/storage/indexeddb/blob-basics-metadata-expected.txt

 Confirm basic Blob/File/FileList functionality.
 
 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 = "blob-basics-metadata.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 store = db.createObjectStore('storeName')
 store.put('value', 'key')
 
 testBlob():
 PASS FileReader != null is true
 test_content = 'This is a test. This is only a test.'
 blob = new Blob([test_content])
 
 validateResult(blob):
+PASS blob.size == test_content.length is true
 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 == test_content.length is true
 
 testFile():
 file = fileInput.files[0]
 
 validateResult(file):
+PASS file.name == fileInput.files[0].name is true
 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.name == fileInput.files[0].name is true
 
 testFileList():
 filelist = fileInput.files
 
 validateResult(filelist):
+PASS filelist[1].name == fileInput.files[1].name is true
 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[1].name == fileInput.files[1].name is true
 
 testCursor():
 transaction = db.transaction('storeName', 'readonly')
 store = transaction.objectStore('storeName')
 request = store.openCursor()
 PASS cursor.value.size == test_content.length is true
 cursor.continue();
 PASS cursor.value.name == fileInput.files[0].name is true

[cmumford, 2015/03/14 14:18:50]

This CL is a little old now. If you rebase on ToT then you will need to add one
more PASS.

 cursor.continue();
 PASS cursor.value[1].name == fileInput.files[1].name is true
 cursor.continue();
 PASS cursor.value == 'value' is true
 cursor.continue();
 PASS cursor is null
 PASS successfullyParsed is true
 
 TEST COMPLETE