/* 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.propagation.events;
  
  import org.hipparchus.geometry.euclidean.threed.FieldVector3D;
  import org.hipparchus.util.Binary64;
  import org.hipparchus.util.Binary64Field;
  import org.junit.jupiter.api.Test;
  import org.orekit.TestUtils;
  import org.orekit.frames.Frame;
  import org.orekit.propagation.FieldSpacecraftState;
  import org.orekit.propagation.SpacecraftState;
  import org.orekit.time.AbsoluteDate;
  import org.orekit.utils.ExtendedPositionProvider;
  
  import static org.junit.jupiter.api.Assertions.*;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  class FieldAngularSeparationDetectorTest {
  
      @Test
      void testGetter() {
          // GIVEN
          final ExtendedPositionProvider mockedBeacon = mock();
          final ExtendedPositionProvider mockedObserver = mock();
          final Binary64 expectedAngle = Binary64.ONE;
          // WHEN
          final FieldAngularSeparationDetector<Binary64> detector = new FieldAngularSeparationDetector<>(mockedBeacon,
                  mockedObserver, expectedAngle);
          // THEN
          assertEquals(expectedAngle, detector.getProximityAngle());
          assertEquals(mockedBeacon, detector.getBeacon());
          assertEquals(mockedObserver, detector.getObserver());
      }
  
      @Test
      void testG() {
          // GIVEN
          final Binary64Field field = Binary64Field.getInstance();
          final SpacecraftState state = new SpacecraftState(TestUtils.getDefaultOrbit(AbsoluteDate.ARBITRARY_EPOCH));
          final FieldSpacecraftState<Binary64> fieldState = new FieldSpacecraftState<>(field, state);
          final Frame frame = fieldState.getFrame();
          final ExtendedPositionProvider mockedBeacon = mock();
          final FieldVector3D<Binary64> beaconPosition = FieldVector3D.getMinusJ(field);
          final FieldVector3D<Binary64> observerPosition = FieldVector3D.getMinusK(field);
          when(mockedBeacon.getPosition(fieldState.getDate(), frame)).thenReturn(beaconPosition);
          when(mockedBeacon.getPosition(state.getDate(), frame)).thenReturn(beaconPosition.toVector3D());
          final ExtendedPositionProvider mockedObserver = mock();
          when(mockedObserver.getPosition(fieldState.getDate(), frame)).thenReturn(observerPosition);
          when(mockedObserver.getPosition(state.getDate(), frame)).thenReturn(observerPosition.toVector3D());
          final Binary64 angle = Binary64.ONE;
          // WHEN
          final FieldAngularSeparationDetector<Binary64> fieldDetector = new FieldAngularSeparationDetector<>(mockedBeacon,
                  mockedObserver, angle);
          // THEN
          final AngularSeparationDetector detector = new AngularSeparationDetector(mockedBeacon, mockedObserver,
                  angle.getReal());
          final Binary64 actualG = fieldDetector.g(fieldState);
          assertEquals(detector.g(state), actualG.getReal());
      }
  }