@Test
public void testSchemaDifference() {

    Schema first = new Schema(ImmutableSet.of(kt1, kt2));
    Schema second = new Schema(ImmutableSet.of(kt2, kt3));
    Pair<Set<KeyspaceTablePair>, Set<KeyspaceTablePair>> difference = Schema.difference(first, second);
    Assert.assertTrue("Should contain the distinct table in first schema", difference.getLeft().contains(kt1));
    Assert.assertTrue("Should contain the distinct table in second schema", difference.getRight().contains(kt3));
}