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/**
* Delegates "is" evaluation back to main thread.
*/
function is(actual, expected, message) {
var rtnObj = new Object();
rtnObj.actual = actual;
rtnObj.expected = expected;
rtnObj.message = message;
postMessage(rtnObj);
}
/**
* Tries to write to property.
*/
function writeProperty(file, property) {
var oldValue = file[property];
file[property] = -1;
is(file[property], oldValue, "Property " + property + " should be readonly.");
}
/**
* Passes junk arguments to FileReaderSync methods and expects an exception to
* be thrown.
*/
function fileReaderJunkArgument(blob) {
var fileReader = new FileReaderSync();
try {
fileReader.readAsBinaryString(blob);
is(
false,
true,
"Should have thrown an exception calling readAsBinaryString."
);
} catch (ex) {
is(true, true, "Should have thrown an exception.");
}
try {
fileReader.readAsDataURL(blob);
is(false, true, "Should have thrown an exception calling readAsDataURL.");
} catch (ex) {
is(true, true, "Should have thrown an exception.");
}
try {
fileReader.readAsArrayBuffer(blob);
is(
false,
true,
"Should have thrown an exception calling readAsArrayBuffer."
);
} catch (ex) {
is(true, true, "Should have thrown an exception.");
}
try {
fileReader.readAsText(blob);
is(false, true, "Should have thrown an exception calling readAsText.");
} catch (ex) {
is(true, true, "Should have thrown an exception.");
}
}
onmessage = function (event) {
var file = event.data;
// Test read only properties.
writeProperty(file, "size");
writeProperty(file, "type");
writeProperty(file, "name");
// Bad types.
fileReaderJunkArgument(undefined);
fileReaderJunkArgument(-1);
fileReaderJunkArgument(1);
fileReaderJunkArgument(new Object());
fileReaderJunkArgument("hello");
// Post undefined to indicate that testing has finished.
postMessage(undefined);
};