@Override
@Test
public void zip() {
ImmutableSet<Integer> immutableSet = this.classUnderTest();
List<Object> nulls = Collections.nCopies(immutableSet.size(), null);
List<Object> nullsPlusOne = Collections.nCopies(immutableSet.size() + 1, null);
ImmutableSet<Pair<Integer, Object>> pairs = immutableSet.zip(nulls);
Assert.assertEquals(immutableSet, pairs.transform(Functions.<Integer>firstOfPair()));
Assert.assertEquals(
UnifiedSet.<Object>newSet(nulls), pairs.transform(Functions.<Object>secondOfPair()));
ImmutableSet<Pair<Integer, Object>> pairsPlusOne = immutableSet.zip(nullsPlusOne);
Assert.assertEquals(immutableSet, pairsPlusOne.transform(Functions.<Integer>firstOfPair()));
Assert.assertEquals(
UnifiedSet.<Object>newSet(nulls), pairsPlusOne.transform(Functions.<Object>secondOfPair()));
Assert.assertEquals(
immutableSet.zip(nulls),
immutableSet.zip(nulls, UnifiedSet.<Pair<Integer, Object>>newSet()));
}
@Override
@Test
public void zipWithIndex() {
ImmutableSet<Integer> immutableSet = this.classUnderTest();
ImmutableSet<Pair<Integer, Integer>> pairs = immutableSet.zipWithIndex();
Assert.assertEquals(immutableSet, pairs.transform(Functions.<Integer>firstOfPair()));
Assert.assertEquals(
UnifiedSet.<Integer>newSet(), pairs.transform(Functions.<Integer>secondOfPair()));
Assert.assertEquals(
immutableSet.zipWithIndex(),
immutableSet.zipWithIndex(UnifiedSet.<Pair<Integer, Integer>>newSet()));
}
@Test
public void cartesianProduct() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
LazyIterable<Pair<String, String>> cartesianProduct =
set.cartesianProduct(UnifiedSet.newSetWith("One", "Two"));
Verify.assertIterableSize(set.size() * 2, cartesianProduct);
Assert.assertEquals(
set,
cartesianProduct
.filter(Predicates.attributeEqual(Functions.<String>secondOfPair(), "One"))
.transform(Functions.<String>firstOfPair())
.toSet());
}
