1 /*
2 * Licensed to the Hipparchus project 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 * https://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.hipparchus.linear;
18
19 import org.junit.jupiter.api.Test;
20
21 import static org.junit.jupiter.api.Assertions.assertFalse;
22 import static org.junit.jupiter.api.Assertions.fail;
23
24 class RealLinearOperatorTest {
25
26 @Test
27 void testDefaultIsTransposable() {
28 assertFalse(new DefaultOperator(MatrixUtils.createRealIdentityMatrix(2)).isTransposable());
29 }
30
31 @Test
32 void testDefaultTransposeMultiply() {
33 try {
34 new DefaultOperator(MatrixUtils.createRealIdentityMatrix(2)).operateTranspose(MatrixUtils.createRealVector(2));
35 fail("an exception should have been thrown");
36 } catch (UnsupportedOperationException uoe) {
37 // expected
38 }
39 }
40
41 // local class that does NOT override isTransposable nor operateTranspose
42 // so the default methods are called
43 private class DefaultOperator implements RealLinearOperator {
44
45 RealMatrix m;
46 public DefaultOperator(RealMatrix m) {
47 this.m = m;
48 }
49
50 @Override
51 public int getRowDimension() {
52 return m.getRowDimension();
53 }
54
55 @Override
56 public int getColumnDimension() {
57 return m.getColumnDimension();
58 }
59
60 @Override
61 public RealVector operate(RealVector x) {
62 return m.operate(x);
63 }
64
65 }
66
67 }