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