IGNITE-8907: [ML] Using vectors in featureExtractor
[ignite.git] / modules / ml / src / test / java / org / apache / ignite / ml / selection / scoring / cursor / LocalLabelPairCursorTest.java
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
18 package org.apache.ignite.ml.selection.scoring.cursor;
19
20 import java.util.HashMap;
21 import java.util.Map;
22 import org.apache.ignite.ml.math.VectorUtils;
23 import org.apache.ignite.ml.selection.scoring.LabelPair;
24 import org.junit.Test;
25
26 import static org.junit.Assert.assertEquals;
27
28 /**
29 * Tests for {@link LocalLabelPairCursor}.
30 */
31 public class LocalLabelPairCursorTest {
32 /** */
33 @Test
34 public void testIterate() {
35 Map<Integer, Integer> data = new HashMap<>();
36
37 for (int i = 0; i < 1000; i++)
38 data.put(i, i);
39
40 LabelPairCursor<Integer> cursor = new LocalLabelPairCursor<>(
41 data,
42 (k, v) -> v % 2 == 0,
43 (k, v) -> VectorUtils.of(v),
44 (k, v) -> v,
45 vec -> (int)vec.get(0)
46 );
47
48 int cnt = 0;
49 for (LabelPair<Integer> e : cursor) {
50 assertEquals(e.getPrediction(), e.getTruth());
51 cnt++;
52 }
53 assertEquals(500, cnt);
54 }
55 }