@Test
public void collectCharWithTarget() {
CharHashBag target = new CharHashBag();
CharHashBag result =
this.newBag().collectChar((CharFunction<String>) string -> string.charAt(0), target);
Assert.assertSame("Target sent as parameter not returned", target, result);
Assert.assertEquals(this.numKeys(), result.sizeDistinct());
for (int i = 1; i <= this.numKeys(); i++) {
Assert.assertEquals(i, result.occurrencesOf((char) ((int) '0' + i)));
}
}
@Override
@Test
public void collectChar() {
MutableBag<Integer> integers = UnmodifiableBag.of(HashBag.newBagWith(1, 2, 2, 3, 3, 3));
Assert.assertEquals(
CharHashBag.newBagWith('A', 'B', 'B', 'C', 'C', 'C'),
integers.collectChar(
new CharFunction<Integer>() {
public char charValueOf(Integer integer) {
return (char) (integer.intValue() + 64);
}
}));
}