@Test
public void forEachWithIndex() {
int[] indexSum = new int[1];
MutableList<String> result = Lists.mutable.of();
MutableSet<String> source = Sets.fixedSize.of("1", "2", "3", "4");
source.forEachWithIndex(
(each, index) -> {
result.add(each);
indexSum[0] += index;
});
Assert.assertEquals(FastList.newListWith("1", "2", "3", "4"), result);
Assert.assertEquals(6, indexSum[0]);
}
