harness.checkPoint("test4");
JFileChooser fc = new JFileChooser();
FileFilter acceptAllFilter = fc.getAcceptAllFileFilter();
FileFilter f1 = new MyFileFilter(true);
fc.addChoosableFileFilter(f1);
fc.addPropertyChangeListener(this);
boolean removed = fc.removeChoosableFileFilter(acceptAllFilter);
harness.check(removed);
FileFilter[] filters = fc.getChoosableFileFilters();
harness.check(filters.length, 1);
harness.check(events.size(), 1);