@Test
  public void test2() {

    assertFalse(validatorA8.isValid("7436666"));
    assertFalse(validatorA8.isValid("7436677"));
    assertFalse(validatorA8.isValid("0003503391"));
    assertFalse(validatorA8.isValid("0001340966"));
  }
  @Test
  public void test1() {

    assertTrue(validatorA8.isValid("7436661"));
    assertTrue(validatorA8.isValid("7436670"));
    assertTrue(validatorA8.isValid("1359100"));
    assertTrue(validatorA8.isValid("7436660"));
    assertTrue(validatorA8.isValid("7436678"));
    assertTrue(validatorA8.isValid("0003503398"));
    assertTrue(validatorA8.isValid("0001340967"));
  }