001/*
002 * Copyright 2020 Global Biodiversity Information Facility (GBIF)
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.gbif.api.util;
017
018import org.junit.jupiter.api.Test;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021
022public class LengthUtilsTest {
023
024  @Test
025  public void testMetersToLatDegree() {
026    assertEquals(0.009043, LengthUtils.metersToLatDegree(1000), 0.0000001);
027    assertEquals(0.000904,  LengthUtils.metersToLatDegree(100), 0.0000001);
028    assertEquals(0.00009, LengthUtils.metersToLatDegree(10), 0.0000001);
029    assertEquals(0.000045, LengthUtils.metersToLatDegree(5), 0.0000001);
030    assertEquals(0.000009, LengthUtils.metersToLatDegree(1), 0.0000001);
031    assertEquals(-0.000009, LengthUtils.metersToLatDegree(-1), 0.0000001);
032
033    assertEquals(0.0, LengthUtils.metersToLatDegree(0), 0.000001);
034  }
035
036  @Test
037  public void testLatDegreeToMeters() {
038    assertEquals(1000, LengthUtils.latDegreeToMeters(0.009044), 0.1);
039    assertEquals(100,  LengthUtils.latDegreeToMeters(0.000904),  0.1);
040    assertEquals(10,   LengthUtils.latDegreeToMeters(0.00009), 0.1);
041    assertEquals(5,    LengthUtils.latDegreeToMeters(0.000045), 0.1);
042    assertEquals(1,    LengthUtils.latDegreeToMeters(0.000009), 0.1);
043
044    assertEquals(0.0, LengthUtils.latDegreeToMeters(0), 0.000001);
045  }
046}