@Test
public void isProperSubsetOf() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
Assert.assertTrue(set.isProperSubsetOf(UnifiedSet.newSetWith("1", "2", "3", "4", "5")));
Assert.assertFalse(set.isProperSubsetOf(set));
}
@Test
public void difference() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<String> difference =
set.difference(UnifiedSet.newSetWith("2", "3", "4", "not present"));
Assert.assertEquals(UnifiedSet.newSetWith("1"), difference);
Assert.assertEquals(set, set.difference(UnifiedSet.newSetWith("not present")));
}
@Test
public void powerSet() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<UnsortedSetIterable<String>> powerSet = set.powerSet();
Verify.assertSize((int) StrictMath.pow(2, set.size()), powerSet);
Verify.assertContains(UnifiedSet.<String>newSet(), powerSet);
Verify.assertContains(set, powerSet);
}
@Test
public void intersect() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<String> intersect = set.intersect(UnifiedSet.newSetWith("a", "b", "c", "1"));
Verify.assertSize(1, intersect);
Assert.assertEquals(UnifiedSet.newSetWith("1"), intersect);
Verify.assertEmpty(set.intersect(UnifiedSet.newSetWith("not present")));
}
@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());
}
@Test
public void union() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<String> union = set.union(UnifiedSet.newSetWith("a", "b", "c", "1"));
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.union(UnifiedSet.newSetWith("1")));
}
@Test
public void symmetricDifference() {
MutableSet<String> set =
MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4").asReadUntouchable();
MutableSet<String> difference =
set.symmetricDifference(UnifiedSet.newSetWith("2", "3", "4", "5", "not present"));
Verify.assertContains("1", difference);
Assert.assertTrue(
difference.containsAllIterable(
Interval.fromTo(set.size() + 1, 5).transform(Functions.getToString())));
for (int i = 2; i <= set.size(); i++) {
Verify.assertNotContains(String.valueOf(i), difference);
}
Verify.assertSize(
set.size() + 1, set.symmetricDifference(UnifiedSet.newSetWith("not present")));
}