@Test
public void testHashCode2() {
// ハッシュ値がばらけていることの確認
Set<Integer> hashCodes =
Color.stream()
.flatMap(c -> Point.stream().map(p -> Move.of(c, p).hashCode()))
.collect(Collectors.toSet());
hashCodes.add(Move.passOf(Color.BLACK).hashCode());
hashCodes.add(Move.passOf(Color.WHITE).hashCode());
assertThat(hashCodes.size(), is(Color.values().length * (Point.values().length + 1)));
}
@Test
public void testPassOf() {
Color.stream()
.forEach(
c -> {
assertThat(Move.passOf(c), instanceOf(Move.class));
assertThat(Move.passOf(c).color, theInstance(c));
assertThat(Move.passOf(c).point, nullValue());
assertThat(Move.passOf(c), is(Move.of(c, null)));
});
assertThat(of(() -> Move.passOf(null)), raise(NullPointerException.class));
}
@Test
public void testEquals() {
Color.stream()
.forEach(
c ->
Point.stream()
.forEach(
p -> {
Move move1 = Move.of(c, p);
Move move2 = Move.of(c, p);
assertThat(move1, not(sameInstance(move2)));
assertThat(move1.equals(move1), is(true));
assertThat(move1.equals(move2), is(true));
assertThat(move1.equals(Move.of(c.opposite(), p)), is(false));
assertThat(move1.equals(Move.of(c, null)), is(false));
assertThat(Move.of(c, null).equals(move1), is(false));
assertThat(
move1.equals(
Move.of(
c, p == Point.of(0, 0) ? Point.of(1, 1) : Point.of(0, 0))),
is(false));
assertThat(move1.equals(null), is(false));
assertThat(move1.equals(c), is(false));
assertThat(move1.equals(p), is(false));
}));
Color.stream()
.forEach(
c -> {
assertThat(Move.of(c, null).equals(Move.of(c, null)), is(true));
assertThat(Move.passOf(c).equals(Move.passOf(c)), is(true));
assertThat(Move.of(c, null).equals(Move.passOf(c)), is(true));
assertThat(Move.passOf(c).equals(Move.of(c, null)), is(true));
});
}