// License: GPL. For details, see LICENSE file. package org.openstreetmap.josm.data.coor; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertFalse; import static org.junit.jupiter.api.Assertions.assertTrue; import java.text.DecimalFormat; import java.util.Arrays; import java.util.List; import org.junit.jupiter.api.Test; import org.openstreetmap.josm.TestUtils; import org.openstreetmap.josm.data.Bounds; import org.openstreetmap.josm.testutils.annotations.Projection; import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; import nl.jqno.equalsverifier.EqualsVerifier; /** * Unit tests for class {@link LatLon}. */ @Projection public class LatLonTest { private static final double EPSILON = 1e-6; /** * Lat/Lon sample values for unit tests */ @SuppressFBWarnings(value = "MS_MUTABLE_COLLECTION") public static final List SAMPLE_VALUES = Arrays.asList( // CHECKSTYLE.OFF: SingleSpaceSeparator -180.0, -179.9, -179.6, -179.5, -179.4, -179.1, -179.0, -100.0, -99.9, -10.0, -9.9, -1.0, -0.1, 180.0, 179.9, 179.6, 179.5, 179.4, 179.1, 179.0, 100.0, 99.9, 10.0, 9.9, 1.0, 0.1, 0.12, 0.123, 0.1234, 0.12345, 0.123456, 0.1234567, 1.12, 1.123, 1.1234, 1.12345, 1.123456, 1.1234567, 10.12, 10.123, 10.1234, 10.12345, 10.123456, 10.1234567, 100.12, 100.123, 100.1234, 100.12345, 100.123456, 100.1234567 // CHECKSTYLE.ON: SingleSpaceSeparator ); /** * Test of {@link LatLon#roundToOsmPrecision} */ @Test void testRoundToOsmPrecision() { for (double value : SAMPLE_VALUES) { assertEquals(LatLon.roundToOsmPrecision(value), value, 0); } assertEquals(LatLon.roundToOsmPrecision(0.0), 0.0, 0); assertEquals(LatLon.roundToOsmPrecision(-0.0), 0.0, 0); // CHECKSTYLE.OFF: SingleSpaceSeparator assertEquals(LatLon.roundToOsmPrecision(0.12345678), 0.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(0.123456789), 0.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(1.12345678), 1.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(1.123456789), 1.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(10.12345678), 10.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(10.123456789), 10.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(100.12345678), 100.1234568, 0); assertEquals(LatLon.roundToOsmPrecision(100.123456789), 100.1234568, 0); // CHECKSTYLE.ON: SingleSpaceSeparator assertEquals(LatLon.roundToOsmPrecision(100.00000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.0000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.00000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.0000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.00000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.0000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.00000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.000000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.0000000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(100.00000000000000000001), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.999999999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.99999999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.9999999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.999999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.99999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.9999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.999999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.99999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.9999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.999999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.99999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.9999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.999999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.99999999), 100.0000000, 0); assertEquals(LatLon.roundToOsmPrecision(99.9999999), 99.9999999, 0); } /** * Test {@link LatLon#toIntervalLat} */ @Test void testToIntervalLat() { assertEquals(-90.0, LatLon.toIntervalLat(-90.0), 0); assertEquals(0.0, LatLon.toIntervalLat(0.0), 0); assertEquals(90.0, LatLon.toIntervalLat(90.0), 0); assertEquals(-90.0, LatLon.toIntervalLat(-91.0), 0); assertEquals(90.0, LatLon.toIntervalLat(91.0), 0); } /** * Test of {@link LatLon#toIntervalLon} */ @Test void testToIntervalLon() { assertEquals(-180.0, LatLon.toIntervalLon(-180.0), 0); assertEquals(0.0, LatLon.toIntervalLon(0.0), 0); assertEquals(180.0, LatLon.toIntervalLon(180.0), 0); assertEquals(179.0, LatLon.toIntervalLon(-181.0), 0); assertEquals(-179.0, LatLon.toIntervalLon(181.0), 0); assertEquals(-1.0, LatLon.toIntervalLon(359.0), 0); assertEquals(1.0, LatLon.toIntervalLon(-359.0), 0); assertEquals(1.0, LatLon.toIntervalLon(361.0), 0); assertEquals(-1.0, LatLon.toIntervalLon(-361.0), 0); assertEquals(179.0, LatLon.toIntervalLon(539.0), 0); assertEquals(-179.0, LatLon.toIntervalLon(-539.0), 0); assertEquals(-179.0, LatLon.toIntervalLon(541.0), 0); assertEquals(179.0, LatLon.toIntervalLon(-541.0), 0); } /** * Unit test of methods {@link LatLon#equals} and {@link LatLon#hashCode}. */ @Test void testEqualsContract() { TestUtils.assumeWorkingEqualsVerifier(); EqualsVerifier.forClass(LatLon.class).usingGetClass() .withPrefabValues(DecimalFormat.class, new DecimalFormat("00.0"), new DecimalFormat("00.000")) .verify(); } /** * Unit test of {@link LatLon#LatLon(ILatLon)}. */ @Test void testCopyConstructor() { assertEquals(LatLon.NORTH_POLE, new LatLon(LatLon.NORTH_POLE)); assertEquals(LatLon.SOUTH_POLE, new LatLon(LatLon.SOUTH_POLE)); assertEquals(new LatLon(1, 2), new LatLon(new LatLon(1, 2))); } /** * Test of {@link LatLon#bearing} */ @Test void testBearing() { ILatLon c = new LatLon(47.000000, 19.000000); ILatLon e = new LatLon(47.000000, 19.000001); ILatLon n = new LatLon(47.000001, 19.000000); assertEquals(0, Math.toDegrees(c.bearing(n)), EPSILON); assertEquals(90, Math.toDegrees(c.bearing(e)), EPSILON); assertEquals(180, Math.toDegrees(n.bearing(c)), EPSILON); assertEquals(270, Math.toDegrees(e.bearing(c)), EPSILON); } /** * Test of {@link LatLon#distance} */ @Test void testDistance() { assertEquals(0.0, LatLon.ZERO.distance(LatLon.ZERO), 0); assertEquals(90.0, LatLon.ZERO.distance(LatLon.NORTH_POLE), 0); assertEquals(180.0, LatLon.SOUTH_POLE.distance(LatLon.NORTH_POLE), 0); } /** * Test of {@link LatLon#distanceSq} */ @Test void testDistanceSq() { assertEquals(0.0, LatLon.ZERO.distanceSq(LatLon.ZERO), 0); assertEquals(90d*90d, LatLon.ZERO.distanceSq(LatLon.NORTH_POLE), 0); assertEquals(180d*180d, LatLon.SOUTH_POLE.distanceSq(LatLon.NORTH_POLE), 0); } /** * Test {@link LatLon#interpolate(LatLon, double)} */ @Test void testInterpolate() { LatLon ll1 = new LatLon(0, 0); LatLon ll2 = new LatLon(30, 60); LatLon ll3 = new LatLon(-70, -40); // lat: assertEquals(15, ll1.interpolate(ll2, 0.5).lat(), 1e-10); assertEquals(0, ll1.interpolate(ll2, 0).lat(), 1e-10); assertEquals(30, ll1.interpolate(ll2, 1).lat(), 1e-10); assertEquals(0, ll3.interpolate(ll2, .7).lat(), 1e-10); // lon assertEquals(30, ll1.interpolate(ll2, 0.5).lon(), 1e-10); assertEquals(0, ll1.interpolate(ll2, 0).lon(), 1e-10); assertEquals(60, ll1.interpolate(ll2, 1).lon(), 1e-10); assertEquals(0, ll3.interpolate(ll2, .4).lon(), 1e-10); } /** * Test {@link LatLon#isValid} */ @Test void testIsValid() { assertTrue(LatLon.ZERO.isValid()); assertTrue(LatLon.NORTH_POLE.isValid()); assertTrue(LatLon.SOUTH_POLE.isValid()); assertFalse(new LatLon(-91, 0).isValid()); assertFalse(new LatLon(91, 0).isValid()); assertFalse(new LatLon(0, -181).isValid()); assertFalse(new LatLon(0, 181).isValid()); } /** * Test {@link LatLon#isWithin} */ @Test void testIsWithin() { assertTrue(LatLon.ZERO.isWithin(new Bounds(LatLon.ZERO))); assertFalse(LatLon.ZERO.isWithin(new Bounds(LatLon.NORTH_POLE))); } /** * Test {@link LatLon#getCenter(LatLon)} */ @Test void testGetCenter() { LatLon ll1 = new LatLon(0, 0); LatLon ll2 = new LatLon(30, 60); LatLon ll3 = new LatLon(-70, -40); assertEquals(15, ll1.getCenter(ll2).lat(), 1e-10); assertEquals(15, ll2.getCenter(ll1).lat(), 1e-10); assertEquals(-20, ll3.getCenter(ll2).lat(), 1e-10); assertEquals(30, ll1.getCenter(ll2).lon(), 1e-10); assertEquals(30, ll2.getCenter(ll1).lon(), 1e-10); assertEquals(10, ll3.getCenter(ll2).lon(), 1e-10); } }