@Test
public void addAndRemoveComponent() {
Entity entity = new Entity();
entity.add(new ComponentA());
assertEquals(1, entity.getComponents().size());
Bits componentBits = entity.getComponentBits();
int componentAIndex = ComponentType.getIndexFor(ComponentA.class);
for (int i = 0; i < componentBits.length(); ++i) {
assertEquals(i == componentAIndex, componentBits.get(i));
}
assertNotNull(am.get(entity));
assertNull(bm.get(entity));
assertTrue(am.has(entity));
assertFalse(bm.has(entity));
entity.remove(ComponentA.class);
assertEquals(0, entity.getComponents().size());
for (int i = 0; i < componentBits.length(); ++i) {
assertFalse(componentBits.get(i));
}
assertNull(am.get(entity));
assertNull(bm.get(entity));
assertFalse(am.has(entity));
assertFalse(bm.has(entity));
}
@Test
public void noComponents() {
Entity entity = new Entity();
assertEquals(0, entity.getComponents().size());
assertTrue(entity.getComponentBits().isEmpty());
assertNull(am.get(entity));
assertNull(bm.get(entity));
assertFalse(am.has(entity));
assertFalse(bm.has(entity));
}