String value = (String)field.clean(new String[]{""}, errors);
assertTrue(errors.isEmpty());
assertTrue("".equals(value));
}
public void testAllowNull() throws Exception {
Field field = new CharField(injector.getInstance(WidgetFactory.class)).setRequired(false).setAllowNull(true);
field.setName("fieldName");
Map<String, String> errors = new HashMap<String, String>();
String value = (String)field.clean(new String[]{""}, errors);