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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 Hipparchus project 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  
18  package org.hipparchus.ode.nonstiff;
19  
20  
21  import org.hipparchus.ode.EquationsMapper;
22  import org.hipparchus.ode.ODEStateAndDerivative;
23  import org.junit.Test;
24  
25  public class DormandPrince853StateInterpolatorTest extends RungeKuttaStateInterpolatorAbstractTest {
26  
27      @Override
28      protected RungeKuttaStateInterpolator
29          createInterpolator(boolean forward, double[][] yDotK,
30                             ODEStateAndDerivative globalPreviousState,
31                             ODEStateAndDerivative globalCurrentState,
32                             ODEStateAndDerivative softPreviousState,
33                             ODEStateAndDerivative softCurrentState,
34                             EquationsMapper mapper) {
35          return new DormandPrince853StateInterpolator(forward, yDotK,
36                                                       globalPreviousState, globalCurrentState,
37                                                       softPreviousState, softCurrentState,
38                                                       mapper);
39      }
40  
41      @Override
42      protected ButcherArrayProvider createButcherArrayProvider() {
43          return new DormandPrince853Integrator(0.0, 1.0, 1.0e-10, 1.0e-10);
44      }
45  
46      @Test
47      public void interpolationAtBounds() {
48          doInterpolationAtBounds(1.0e-15);
49      }
50  
51      @Test
52      public void interpolationInside() {
53          doInterpolationInside(3.1e-17, 3.4e-16);
54      }
55  
56      @Override
57      public void restrictPrevious() {
58          doRestrictPrevious(1.0e-15, 1.0e-15);
59      }
60  
61      @Override
62      public void restrictCurrent() {
63          doRestrictCurrent(1.0e-15, 1.0e-15);
64      }
65  
66      @Override
67      public void restrictBothEnds() {
68          doRestrictBothEnds(1.0e-15, 1.0e-15);
69      }
70  
71      @Override
72      public void degenerateInterpolation() {
73          doDegenerateInterpolation();
74      }
75  
76  }