}
int classesAfter = project.getActualTestClasses().size();
if (classesAfter > classesBefore) {
JOptionPane.showMessageDialog(null, (classesAfter - classesBefore)
+ " test-classes have been added.");
eventSupport.fireEvent(new TcaEvent(this,
TcaEventCommands.UPDATECLASSES));
} else {
throw new ClassNotFoundException(
"No test-class have been added.\nclass-path: "
+ project.getClasspath());