public void testSetGender() {
        String validGenders = "FM\0";
        char gender = person.getGender();
        for (char c = '\0'; c < '\uFFFF'; c++) {
            try {
                person.setGender(c);
                if (validGenders.indexOf(c) < 0) {
                    System.out.println(c);
                    fail(c + " is an invalid gender");
                }
                gender = person.getGender();
            } catch(Exception e) {
                if (validGenders.indexOf(c) >= 0) {
                    System.out.println("dfsdf--" + c);
                    fail("F, M and \\0 are valid genders");
                } else {
                    System.out.println("dfsdf--" + c);
                    testExceptionAndValue(e, IllegalArgumentException.class, gender, person.getGender());
                }
            }
        }
    }