/* Copyright 2022-2025 Romain Serra
    * Licensed to CS GROUP (CS) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * CS 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
    *
    *   http://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.orekit.utils;
  
  import org.hipparchus.geometry.euclidean.threed.Vector3D;
  import org.junit.jupiter.api.Test;
  import org.orekit.TestUtils;
  import org.orekit.frames.Frame;
  import org.orekit.frames.FramesFactory;
  import org.orekit.orbits.Orbit;
  import org.orekit.time.AbsoluteDate;
  
  import static org.junit.jupiter.api.Assertions.*;
  
  class ShiftingPVCoordinatesProviderTest {
  
      @Test
      void testGetPosition() {
          // GIVEN
          final Orbit orbit = TestUtils.getDefaultOrbit(AbsoluteDate.ARBITRARY_EPOCH);
          final TimeStampedPVCoordinates pvCoordinates = orbit.getPVCoordinates();
          final ShiftingPVCoordinatesProvider pvCoordinatesProvider = new ShiftingPVCoordinatesProvider(pvCoordinates,
                  orbit.getFrame());
          final Frame frame = FramesFactory.getEME2000();
          final AbsoluteDate shiftedDate = orbit.getDate().shiftedBy(1000);
          // WHEN
          final Vector3D position = pvCoordinatesProvider.getPosition(shiftedDate, frame);
          // THEN
          final PVCoordinates shiftedPV = pvCoordinatesProvider.getPVCoordinates(shiftedDate, frame);
          assertArrayEquals(shiftedPV.getPosition().toArray(), position.toArray(), 1e-9);
      }
  }