1   /* Copyright 2022-2025 Romain Serra
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS 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.orekit.propagation.conversion;
18  
19  import org.hipparchus.complex.Complex;
20  import org.hipparchus.ode.nonstiff.ThreeEighthesIntegrator;
21  import org.junit.jupiter.api.Assertions;
22  import org.junit.jupiter.api.Test;
23  
24  class ThreeEighthesFieldIntegratorBuilderTest {
25  
26      @Test
27      void testToODEIntegratorBuilder() {
28          // GIVEN
29          final ThreeEighthesFieldIntegratorBuilder<Complex> fieldIntegratorBuilder = new ThreeEighthesFieldIntegratorBuilder<>(Complex.ONE);
30          // WHEN
31          final ThreeEighthesIntegratorBuilder integratorBuilder = fieldIntegratorBuilder.toODEIntegratorBuilder();
32          // THEN
33          final ThreeEighthesIntegrator integrator = (ThreeEighthesIntegrator) integratorBuilder.buildIntegrator(null, null);
34          Assertions.assertEquals(fieldIntegratorBuilder.getStep(), integrator.getDefaultStep());
35      }
36  }