@Test
public void testHalfWidthNotEquals() {

    // set up
    FullHalfPair FullHalfPair1 = new FullHalfPair("ａ", "a");
    FullHalfPair FullHalfPair2 = new FullHalfPair("ａ", "b");
    // assert
    assertThat(FullHalfPair1.equals(FullHalfPair2), is(false));
}