@Test
public void testClone() {
set.add(1, 2, 3);
IntDoubleLinkedSet cloned = set.clone();
cloned.remove(1);
assertSortedListEquals(set.toArray(), 1, 2, 3);
assertSortedListEquals(cloned.toArray(), 2, 3);
}
@Test
public void testFromMethod() {
IntOpenHashSet list2 = new IntOpenHashSet();
list2.add(1, 3, 5);
IntDoubleLinkedSet s1 = IntDoubleLinkedSet.from(1, 3, 5);
IntDoubleLinkedSet s2 = IntDoubleLinkedSet.from(1, 3, 5);
assertSortedListEquals(list2.toArray(), s1.toArray());
assertSortedListEquals(list2.toArray(), s2.toArray());
}
/**
* Run some random insertions/ deletions and compare the results against <code>java.util.HashSet
* </code>.
*/
@Test
public void testAgainstHashMap() {
final java.util.Random rnd = new java.util.Random(0x11223344);
final java.util.HashSet<Integer> other = new java.util.HashSet<Integer>();
for (int size = 1000; size < 20000; size += 4000) {
other.clear();
set.clear();
for (int round = 0; round < size * 20; round++) {
Integer key = rnd.nextInt(size);
if (rnd.nextBoolean()) {
assertEquals(other.add(key), set.add(key));
assertTrue(set.contains(key));
} else {
assertEquals(other.remove(key), set.remove(key));
}
assertEquals(other.size(), set.size());
}
int[] actual = set.toArray();
int[] expected = new int[other.size()];
int i = 0;
for (Integer v : other) expected[i++] = v;
Arrays.sort(expected);
Arrays.sort(actual);
assertArrayEquals(expected, actual);
}
}
@Test
public void testClear() {
set.add(1, 2, 3);
set.clear();
assertEquals(0, set.size());
assertEquals(0, set.toArray().length);
}
@Test
public void testRemove() {
set.add(0, 1, 2, 3, 4);
assertTrue(set.remove(2));
assertFalse(set.remove(2));
assertEquals(4, set.size());
assertSortedListEquals(set.toArray(), 0, 1, 3, 4);
}
@Test
public void testConstructorFromContainer() {
IntOpenHashSet list2 = new IntOpenHashSet();
list2.add(1, 3, 5);
set = new IntDoubleLinkedSet(list2);
assertEquals(3, set.size());
assertSortedListEquals(list2.toArray(), set.toArray());
}
@Test
public void testRemoveAllFromLookupContainer() {
set.add(0, 1, 2, 3, 4);
IntOpenHashSet list2 = new IntOpenHashSet();
list2.add(1, 3, 5);
assertEquals(2, set.removeAll(list2));
assertEquals(3, set.size());
assertSortedListEquals(set.toArray(), 0, 2, 4);
}
@Test
public void testAddAll() {
IntDoubleLinkedSet set2 = new IntDoubleLinkedSet();
set2.add(1, 2);
set.add(0, 1);
assertEquals(1, set.addAll(set2));
assertEquals(0, set.addAll(set2));
assertEquals(3, set.size());
assertSortedListEquals(set.toArray(), 0, 1, 2);
}
@Test
public void testRetainAllWithPredicate() {
set.add(0, key1, key2, 3, 4, 5);
assertEquals(
4,
set.retainAll(
new IntPredicate() {
public boolean apply(int v) {
return v == key1 || v == key2;
};
}));
assertSortedListEquals(set.toArray(), key1, key2);
}
@Test
public void testRemoveAllWithPredicate() {
set.add(0, key1, key2);
assertEquals(
1,
set.removeAll(
new IntPredicate() {
public boolean apply(int v) {
return v == key1;
};
}));
assertSortedListEquals(set.toArray(), 0, key2);
}
@Test
public void testAddVarArgs() {
set.add(0, 1, 2, 1, 0);
assertEquals(3, set.size());
assertSortedListEquals(set.toArray(), 0, 1, 2);
}