@Test
public void testGetKeys() {

	List<MockObject> keys = new ArrayList<>();
	MockObject m1 = new MockObject(1);
	MockObject m2 = new MockObject(2);
	keys.add(m1);
	keys.add(m2);
	DoubleMapGenotype<MockObject> doubleMapGeno = new DoubleMapGenotype<>(keys, new MockBounds());
	Collection<MockObject> ks = doubleMapGeno.getKeys();
	assertEquals(2, ks.size());
	assertTrue(ks.contains(m1));
	assertTrue(ks.contains(m2));
}