1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.collections4.bloomfilter;
18
19 public class IndexProducerFromUniqueHasherTest extends AbstractIndexProducerTest {
20
21 @Override
22 protected IndexProducer createEmptyProducer() {
23 return NullHasher.INSTANCE.indices(Shape.fromKM(17, 72));
24 }
25
26 @Override
27 protected IndexProducer createProducer() {
28 // hasher has collisions and wraps
29 return new IncrementingHasher(4, 8).indices(Shape.fromKM(17, 72)).uniqueIndices();
30 }
31
32 @Override
33 protected int getAsIndexArrayBehaviour() {
34 return DISTINCT;
35 }
36
37 @Override
38 protected int[] getExpectedIndices() {
39 return new int[] {4, 12, 20, 28, 36, 44, 52, 60, 68};
40 }
41 }