/* Copyright 2002-2017 CS Systèmes d'Information
 * Licensed to CS Systèmes d'Information (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.junit.Assert;
import org.junit.Test;

public class AngularDerivativesFilterTest {

    @Test
    public void testList() {
        Assert.assertEquals(3, AngularDerivativesFilter.values().length);
    }

    @Test
    public void testOrder() {
        Assert.assertEquals(0, AngularDerivativesFilter.USE_R.getMaxOrder(), 0);
        Assert.assertEquals(1, AngularDerivativesFilter.USE_RR.getMaxOrder(), 0);
        Assert.assertEquals(2, AngularDerivativesFilter.USE_RRA.getMaxOrder(), 0);
    }

    @Test
    public void testBuildFromOrder() {
        Assert.assertEquals(AngularDerivativesFilter.USE_R,   AngularDerivativesFilter.getFilter(0));
        Assert.assertEquals(AngularDerivativesFilter.USE_RR,  AngularDerivativesFilter.getFilter(1));
        Assert.assertEquals(AngularDerivativesFilter.USE_RRA, AngularDerivativesFilter.getFilter(2));
    }

    @Test
    public void testNoNegativeOrder() {
        try {
            AngularDerivativesFilter.getFilter(-1);
            Assert.fail("an exception should have been thrown");
        } catch (IllegalArgumentException iae) {
            // expected
        }
    }

    @Test
    public void testNoOrder3() {
        try {
            AngularDerivativesFilter.getFilter(3);
            Assert.fail("an exception should have been thrown");
        } catch (IllegalArgumentException iae) {
            // expected
        }
    }

}