dISA jEBANIE

@Test
void valid_domain() {
  assert(EmailUtils.getEmailDomain("jd@gmail.com"), "gmail.com");
}

@Test
void invalid_domain() {
  assert(ArrayIndexOutOfBoundsException.class, () -> EmailUtils.getEmailDomain("jd@gmail.com"));
}

@Test
void valid_email() {
  validateEmail("jd@gmail.com");
}

@Test
void invalid_email() {
  assertThrows(IllegalArgumentException.class, () -> validateEmail("jd@gmail.com"));
}