/*
    * Licensed to the Hipparchus project under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The Hipparchus project licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.hipparchus.ode.nonstiff;
  
  
  import org.hipparchus.Field;
  import org.hipparchus.CalculusFieldElement;
  import org.hipparchus.ode.FieldEquationsMapper;
  import org.hipparchus.ode.FieldODEStateAndDerivative;
  import org.hipparchus.util.Binary64Field;
  import org.junit.Test;
  
  public class ThreeEighthesFieldStateInterpolatorTest extends RungeKuttaFieldStateInterpolatorAbstractTest {
  
      protected <T extends CalculusFieldElement<T>> RungeKuttaFieldStateInterpolator<T>
      createInterpolator(Field<T> field, boolean forward, T[][] yDotK,
                         FieldODEStateAndDerivative<T> globalPreviousState,
                         FieldODEStateAndDerivative<T> globalCurrentState,
                         FieldODEStateAndDerivative<T> softPreviousState,
                         FieldODEStateAndDerivative<T> softCurrentState,
                         FieldEquationsMapper<T> mapper) {
          return new ThreeEighthesFieldStateInterpolator<T>(field, forward, yDotK,
                                                           globalPreviousState, globalCurrentState,
                                                           softPreviousState, softCurrentState,
                                                           mapper);
      }
  
      protected <T extends CalculusFieldElement<T>> FieldButcherArrayProvider<T>
      createButcherArrayProvider(final Field<T> field) {
          return new ThreeEighthesFieldIntegrator<T>(field, field.getOne());
      }
  
      @Test
      public void interpolationAtBounds() {
          doInterpolationAtBounds(Binary64Field.getInstance(), 1.0e-15);
      }
  
      @Test
      public void interpolationInside() {
          doInterpolationInside(Binary64Field.getInstance(), 2.6e-7, 3.6e-6);
      }
  
      @Test
      public void nonFieldInterpolatorConsistency() {
          doNonFieldInterpolatorConsistency(Binary64Field.getInstance(), 1.4e-17, 1.2e-16, 3.4e-16, 1.4e-17);
      }
  
  }