@Test
public void serialization() {
int size = COLLISIONS.size();
for (int i = 1; i < size; i++) {
MutableSet<Integer> set =
UnifiedSetWithHashingStrategy.newSet(INTEGER_HASHING_STRATEGY, SIZE)
.withAll(COLLISIONS.subList(0, i));
Verify.assertPostSerializedEqualsAndHashCode(set);
set.add(null);
Verify.assertPostSerializedEqualsAndHashCode(set);
}
UnifiedSetWithHashingStrategy<Integer> nullBucketZero =
UnifiedSetWithHashingStrategy.newSetWith(
INTEGER_HASHING_STRATEGY, null, COLLISION_1, COLLISION_2);
Verify.assertPostSerializedEqualsAndHashCode(nullBucketZero);
UnifiedSetWithHashingStrategy<Integer> simpleSetWithNull =
UnifiedSetWithHashingStrategy.newSetWith(INTEGER_HASHING_STRATEGY, null, 1, 2);
Verify.assertPostSerializedEqualsAndHashCode(simpleSetWithNull);
UnifiedSetWithHashingStrategy<Person> people =
UnifiedSetWithHashingStrategy.newSet(LAST_NAME_HASHING_STRATEGY, PEOPLE);
Verify.assertPostSerializedEqualsAndHashCode(people);
// Testing the hashingStrategy is serialized correctly by making sure it is still hashing by
// last name
Verify.assertSetsEqual(LAST_NAME_HASHED_SET.castToSet(), people.withAll(PEOPLE.castToList()));
}
@Test
public void get_with_hashingStrategy() {
UnifiedSetWithHashingStrategy<Person> people =
UnifiedSetWithHashingStrategy.newSet(
HashingStrategies.nullSafeHashingStrategy(LAST_NAME_HASHING_STRATEGY), 2)
.withAll(PEOPLE.castToList());
// Putting null then testing geting a null
Verify.assertSize(3, people.with((Person) null));
Assert.assertNull(people.get(null));
// Testing it is getting the same reference
Assert.assertSame(JOHNSMITH, people.get(JANESMITH));
Assert.assertSame(JOHNSMITH, people.get(JOHNSMITH));
Assert.assertSame(JOHNDOE, people.get(JANEDOE));
Assert.assertSame(JOHNDOE, people.get(JOHNDOE));
Assert.assertSame(JOHNSMITH, people.get(new Person("Anything", "Smith")));
Assert.assertNull(people.get(new Person("John", "NotHere")));
// Testing get throws NullPointerException if the hashingStrategy is not null safe
Verify.assertThrows(
NullPointerException.class,
() -> {
UnifiedSetWithHashingStrategy.newSet(LAST_NAME_HASHING_STRATEGY).get(null);
});
}
@Test
public void put_with_hashingStrategy() {
UnifiedSetWithHashingStrategy<Person> people =
UnifiedSetWithHashingStrategy.newSet(
HashingStrategies.nullSafeHashingStrategy(LAST_NAME_HASHING_STRATEGY), 2)
.withAll(PEOPLE.castToList());
// Testing if element already exists, returns the instance in the set
Assert.assertSame(JOHNSMITH, people.put(new Person("Anything", "Smith")));
Verify.assertSize(2, people);
// Testing if the element doesn't exist, returns the element itself
Person notInSet = new Person("Not", "inSet");
Assert.assertSame(notInSet, people.put(notInSet));
Verify.assertSize(3, people);
// Testing putting a null to force a rehash
Assert.assertNull(people.put(null));
Verify.assertSize(4, people);
// Testing put throws NullPointerException if the hashingStrategy is not null safe
Verify.assertThrows(
NullPointerException.class,
() -> {
UnifiedSetWithHashingStrategy.newSet(LAST_NAME_HASHING_STRATEGY).put(null);
});
}
@Override
@Test
public void reject() {
super.reject();
UnifiedSetWithHashingStrategy<Person> people =
UnifiedSetWithHashingStrategy.newSet(LAST_NAME_HASHING_STRATEGY)
.withAll(PEOPLE.castToList());
Verify.assertSetsEqual(
UnifiedSet.newSetWith(JOHNSMITH),
people.reject(each -> "Doe".equals(each.getLastName())).with(JANESMITH));
}