@Test
public void unionInto() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<String> union =
set.unionInto(UnifiedSet.newSetWith("a", "b", "c", "1"), UnifiedSet.<String>newSet());
Verify.assertSize(set.size() + 3, union);
Assert.assertTrue(
union.containsAllIterable(Interval.oneTo(set.size()).transform(Functions.getToString())));
Verify.assertContainsAll(union, "a", "b", "c");
Assert.assertEquals(
set, set.unionInto(UnifiedSet.newSetWith("1"), UnifiedSet.<String>newSet()));
}
