dISA jEBANIE

@Test
void valid_domain() {
  assert(EmailUtils.getEmailDomain("[email protected]"), "gmail.com");
}

@Test
void invalid_domain() {
  assert(ArrayIndexOutOfBoundsException.class, () -> EmailUtils.getEmailDomain("[email protected]"));
}

@Test
void valid_email() {
  validateEmail("[email protected]");
}

@Test
void invalid_email() {
  assertThrows(IllegalArgumentException.class, () -> validateEmail("[email protected]"));
}