michael@0: /**
michael@0:  * Delegates "is" evaluation back to main thread.
michael@0:  */
michael@0: function is(actual, expected, message) {
michael@0:   var rtnObj = new Object();
michael@0:   rtnObj.actual = actual;
michael@0:   rtnObj.expected = expected;
michael@0:   rtnObj.message = message;
michael@0:   postMessage(rtnObj);
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * Tries to write to property.
michael@0:  */
michael@0: function writeProperty(file, property) {
michael@0:   try {
michael@0:     var oldValue = file[property];
michael@0:     file[property] = -1;
michael@0:     is(false, true, "Should have thrown an exception setting a read only property.");
michael@0:   } catch (ex) {
michael@0:     is(true, true, "Should have thrown an exception setting a read only property.");
michael@0:   }
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * Passes junk arguments to FileReaderSync methods and expects an exception to
michael@0:  * be thrown.
michael@0:  */
michael@0: function fileReaderJunkArgument(blob) {
michael@0:   var fileReader = new FileReaderSync();
michael@0: 
michael@0:   try {
michael@0:     fileReader.readAsBinaryString(blob);
michael@0:     is(false, true, "Should have thrown an exception calling readAsBinaryString.");
michael@0:   } catch(ex) {
michael@0:     is(true, true, "Should have thrown an exception.");
michael@0:   }
michael@0: 
michael@0:   try {
michael@0:     fileReader.readAsDataURL(blob);
michael@0:     is(false, true, "Should have thrown an exception calling readAsDataURL.");
michael@0:   } catch(ex) {
michael@0:     is(true, true, "Should have thrown an exception.");
michael@0:   }
michael@0: 
michael@0:   try {
michael@0:     fileReader.readAsArrayBuffer(blob);
michael@0:     is(false, true, "Should have thrown an exception calling readAsArrayBuffer.");
michael@0:   } catch(ex) {
michael@0:     is(true, true, "Should have thrown an exception.");
michael@0:   }
michael@0: 
michael@0:   try {
michael@0:     fileReader.readAsText(blob);
michael@0:     is(false, true, "Should have thrown an exception calling readAsText.");
michael@0:   } catch(ex) {
michael@0:     is(true, true, "Should have thrown an exception.");
michael@0:   }
michael@0: }
michael@0: 
michael@0: onmessage = function(event) {
michael@0:   var file = event.data;
michael@0: 
michael@0:   // Test read only properties.
michael@0:   writeProperty(file, "size");
michael@0:   writeProperty(file, "type");
michael@0:   writeProperty(file, "name");
michael@0:   writeProperty(file, "mozFullPath");
michael@0: 
michael@0:   // Bad types.
michael@0:   fileReaderJunkArgument(undefined);
michael@0:   fileReaderJunkArgument(-1);
michael@0:   fileReaderJunkArgument(1);
michael@0:   fileReaderJunkArgument(new Object());
michael@0:   fileReaderJunkArgument("hello");
michael@0: 
michael@0:     // Post undefined to indicate that testing has finished.
michael@0:   postMessage(undefined);
michael@0: };