Confirm that IndexedDB can store an empty Blob/File/FileList

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


dbname = "empty-blob-file.html"
indexedDB.deleteDatabase(dbname)
indexedDB.open(dbname)
store = db.createObjectStore('storeName')
store.put('value', 'key')

testEmptyBlob():
blob = new Blob([])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyDataBlob():
blob = new Blob(['', '', ''])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyNestedBlob():
blob = new Blob(['', new Blob([]), ''])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyNestedDataBlob():
blob = new Blob(['', new Blob(['']), ''])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyFileInsideBlob():
file = emptyFileInput.files[0]
blob = new Blob(['', file, ''])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyFileInsideNestedBlob():
file = emptyFileInput.files[0]
blob = new Blob(['', new Blob([file]), ''])

validateResult(blob):
PASS blob.size == 0 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 == 0 is true

testEmptyFile():
file = emptyFileInput.files[0]

validateResult(file):
PASS file.size == 0 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.size == 0 is true

testEmptyFileList():
fileList = emptyFileListInput.files

validateResult(fileList):
PASS fileList.length == 0 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.length == 0 is true
PASS successfullyParsed is true

TEST COMPLETE