if (this.importScripts) {
importScripts('fs-worker-common.js');
importScripts('../../../resources/js-test.js');
importScripts('file-writer-utils.js');
}
description("Test of extending a file using truncate().");
function onTestSucceeded()
{
testPassed("Truncate extension verified.");
cleanUp();
}
function truncateToExtend(fileEntry, fileWriter, contents, onSuccess)
{
var extension = 5;
var lengthChecker = function() {
verifyFileLength(fileEntry, contents.length + extension, onSuccess);
};
var extensionChecker = function() {
verifyByteRangeIsZeroes(fileEntry, contents.length, extension, lengthChecker);
};
fileWriter.onwrite = function() {
verifyByteRangeAsString(fileEntry, 0, contents, extensionChecker);
};
fileWriter.truncate(contents.length + extension);
}
function runTest(fileEntry, fileWriter) {
var contents = "Lorem ipsum";
writeString(fileEntry, fileWriter, 0, contents,
function() {
truncateToExtend(fileEntry, fileWriter, contents, onTestSucceeded);
});
}
var jsTestIsAsync = true;
setupAndRunTest(1024, 'file-writer-truncate-extend', runTest);