1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.coor;
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3 |
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4 | import static org.junit.Assert.assertEquals;
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5 | import static org.junit.Assert.assertFalse;
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6 | import static org.junit.Assert.assertTrue;
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7 |
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8 | import java.text.DecimalFormat;
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9 | import java.util.Arrays;
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10 | import java.util.List;
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11 |
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12 | import org.junit.Rule;
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13 | import org.junit.Test;
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14 | import org.openstreetmap.josm.TestUtils;
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15 | import org.openstreetmap.josm.data.Bounds;
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16 | import org.openstreetmap.josm.testutils.JOSMTestRules;
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17 |
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18 | import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
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19 | import nl.jqno.equalsverifier.EqualsVerifier;
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20 |
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21 | /**
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22 | * Unit tests for class {@link LatLon}.
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23 | */
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24 | public class LatLonTest {
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25 |
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26 | /**
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27 | * Setup test.
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28 | */
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29 | @Rule
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30 | @SuppressFBWarnings(value = "URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD")
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31 | public JOSMTestRules test = new JOSMTestRules().projection();
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32 |
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33 | private static final double EPSILON = 1e-6;
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34 |
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35 | /**
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36 | * Lat/Lon sample values for unit tests
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37 | */
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38 | @SuppressFBWarnings(value = "MS_MUTABLE_COLLECTION")
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39 | public static final List<Double> SAMPLE_VALUES = Arrays.asList(
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40 | // CHECKSTYLE.OFF: SingleSpaceSeparator
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41 | -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,
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42 | 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,
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43 | 0.12, 0.123, 0.1234, 0.12345, 0.123456, 0.1234567,
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44 | 1.12, 1.123, 1.1234, 1.12345, 1.123456, 1.1234567,
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45 | 10.12, 10.123, 10.1234, 10.12345, 10.123456, 10.1234567,
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46 | 100.12, 100.123, 100.1234, 100.12345, 100.123456, 100.1234567
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47 | // CHECKSTYLE.ON: SingleSpaceSeparator
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48 | );
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49 |
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50 | /**
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51 | * Test of {@link LatLon#roundToOsmPrecision}
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52 | */
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53 | @Test
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54 | public void testRoundToOsmPrecision() {
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55 |
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56 | for (double value : SAMPLE_VALUES) {
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57 | assertEquals(LatLon.roundToOsmPrecision(value), value, 0);
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58 | }
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59 |
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60 | assertEquals(LatLon.roundToOsmPrecision(0.0), 0.0, 0);
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61 | assertEquals(LatLon.roundToOsmPrecision(-0.0), 0.0, 0);
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62 |
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63 | // CHECKSTYLE.OFF: SingleSpaceSeparator
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64 | assertEquals(LatLon.roundToOsmPrecision(0.12345678), 0.1234568, 0);
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65 | assertEquals(LatLon.roundToOsmPrecision(0.123456789), 0.1234568, 0);
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66 |
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67 | assertEquals(LatLon.roundToOsmPrecision(1.12345678), 1.1234568, 0);
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68 | assertEquals(LatLon.roundToOsmPrecision(1.123456789), 1.1234568, 0);
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69 |
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70 | assertEquals(LatLon.roundToOsmPrecision(10.12345678), 10.1234568, 0);
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71 | assertEquals(LatLon.roundToOsmPrecision(10.123456789), 10.1234568, 0);
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72 |
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73 | assertEquals(LatLon.roundToOsmPrecision(100.12345678), 100.1234568, 0);
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74 | assertEquals(LatLon.roundToOsmPrecision(100.123456789), 100.1234568, 0);
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75 | // CHECKSTYLE.ON: SingleSpaceSeparator
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76 |
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77 | assertEquals(LatLon.roundToOsmPrecision(100.00000001), 100.0000000, 0);
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78 | assertEquals(LatLon.roundToOsmPrecision(100.000000001), 100.0000000, 0);
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79 | assertEquals(LatLon.roundToOsmPrecision(100.0000000001), 100.0000000, 0);
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80 | assertEquals(LatLon.roundToOsmPrecision(100.00000000001), 100.0000000, 0);
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81 | assertEquals(LatLon.roundToOsmPrecision(100.000000000001), 100.0000000, 0);
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82 | assertEquals(LatLon.roundToOsmPrecision(100.0000000000001), 100.0000000, 0);
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83 | assertEquals(LatLon.roundToOsmPrecision(100.00000000000001), 100.0000000, 0);
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84 | assertEquals(LatLon.roundToOsmPrecision(100.000000000000001), 100.0000000, 0);
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85 | assertEquals(LatLon.roundToOsmPrecision(100.0000000000000001), 100.0000000, 0);
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86 | assertEquals(LatLon.roundToOsmPrecision(100.00000000000000001), 100.0000000, 0);
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87 | assertEquals(LatLon.roundToOsmPrecision(100.000000000000000001), 100.0000000, 0);
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88 | assertEquals(LatLon.roundToOsmPrecision(100.0000000000000000001), 100.0000000, 0);
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89 | assertEquals(LatLon.roundToOsmPrecision(100.00000000000000000001), 100.0000000, 0);
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90 |
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91 | assertEquals(LatLon.roundToOsmPrecision(99.999999999999999999999), 100.0000000, 0);
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92 | assertEquals(LatLon.roundToOsmPrecision(99.99999999999999999999), 100.0000000, 0);
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93 | assertEquals(LatLon.roundToOsmPrecision(99.9999999999999999999), 100.0000000, 0);
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94 | assertEquals(LatLon.roundToOsmPrecision(99.999999999999999999), 100.0000000, 0);
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95 | assertEquals(LatLon.roundToOsmPrecision(99.99999999999999999), 100.0000000, 0);
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96 | assertEquals(LatLon.roundToOsmPrecision(99.9999999999999999), 100.0000000, 0);
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97 | assertEquals(LatLon.roundToOsmPrecision(99.999999999999999), 100.0000000, 0);
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98 | assertEquals(LatLon.roundToOsmPrecision(99.99999999999999), 100.0000000, 0);
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99 | assertEquals(LatLon.roundToOsmPrecision(99.9999999999999), 100.0000000, 0);
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100 | assertEquals(LatLon.roundToOsmPrecision(99.999999999999), 100.0000000, 0);
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101 | assertEquals(LatLon.roundToOsmPrecision(99.99999999999), 100.0000000, 0);
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102 | assertEquals(LatLon.roundToOsmPrecision(99.9999999999), 100.0000000, 0);
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103 | assertEquals(LatLon.roundToOsmPrecision(99.999999999), 100.0000000, 0);
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104 | assertEquals(LatLon.roundToOsmPrecision(99.99999999), 100.0000000, 0);
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105 | assertEquals(LatLon.roundToOsmPrecision(99.9999999), 99.9999999, 0);
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106 | }
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107 |
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108 | /**
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109 | * Test {@link LatLon#toIntervalLat}
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110 | */
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111 | @Test
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112 | public void testToIntervalLat() {
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113 | assertEquals(-90.0, LatLon.toIntervalLat(-90.0), 0);
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114 | assertEquals(0.0, LatLon.toIntervalLat(0.0), 0);
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115 | assertEquals(90.0, LatLon.toIntervalLat(90.0), 0);
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116 |
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117 | assertEquals(-90.0, LatLon.toIntervalLat(-91.0), 0);
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118 | assertEquals(90.0, LatLon.toIntervalLat(91.0), 0);
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119 | }
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120 |
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121 | /**
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122 | * Test of {@link LatLon#toIntervalLon}
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123 | */
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124 | @Test
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125 | public void testToIntervalLon() {
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126 | assertEquals(-180.0, LatLon.toIntervalLon(-180.0), 0);
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127 | assertEquals(0.0, LatLon.toIntervalLon(0.0), 0);
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128 | assertEquals(180.0, LatLon.toIntervalLon(180.0), 0);
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129 |
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130 | assertEquals(179.0, LatLon.toIntervalLon(-181.0), 0);
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131 | assertEquals(-179.0, LatLon.toIntervalLon(181.0), 0);
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132 |
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133 | assertEquals(-1.0, LatLon.toIntervalLon(359.0), 0);
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134 | assertEquals(1.0, LatLon.toIntervalLon(-359.0), 0);
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135 |
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136 | assertEquals(1.0, LatLon.toIntervalLon(361.0), 0);
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137 | assertEquals(-1.0, LatLon.toIntervalLon(-361.0), 0);
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138 |
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139 | assertEquals(179.0, LatLon.toIntervalLon(539.0), 0);
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140 | assertEquals(-179.0, LatLon.toIntervalLon(-539.0), 0);
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141 |
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142 | assertEquals(-179.0, LatLon.toIntervalLon(541.0), 0);
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143 | assertEquals(179.0, LatLon.toIntervalLon(-541.0), 0);
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144 | }
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145 |
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146 | /**
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147 | * Unit test of methods {@link LatLon#equals} and {@link LatLon#hashCode}.
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148 | */
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149 | @Test
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150 | public void testEqualsContract() {
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151 | TestUtils.assumeWorkingEqualsVerifier();
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152 | EqualsVerifier.forClass(LatLon.class).usingGetClass()
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153 | .withPrefabValues(DecimalFormat.class, new DecimalFormat("00.0"), new DecimalFormat("00.000"))
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154 | .verify();
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155 | }
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156 |
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157 | /**
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158 | * Unit test of {@link LatLon#LatLon(LatLon)}.
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159 | */
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160 | @Test
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161 | public void testCopyConstructor() {
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162 | assertEquals(LatLon.NORTH_POLE, new LatLon(LatLon.NORTH_POLE));
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163 | assertEquals(LatLon.SOUTH_POLE, new LatLon(LatLon.SOUTH_POLE));
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164 | assertEquals(new LatLon(1, 2), new LatLon(new LatLon(1, 2)));
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165 | }
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166 |
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167 | /**
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168 | * Test of {@link LatLon#bearing}
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169 | */
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170 | @Test
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171 | public void testBearing() {
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172 | LatLon c = new LatLon(47.000000, 19.000000);
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173 | LatLon e = new LatLon(47.000000, 19.000001);
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174 | LatLon n = new LatLon(47.000001, 19.000000);
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175 | assertEquals(0, Math.toDegrees(c.bearing(n)), EPSILON);
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176 | assertEquals(90, Math.toDegrees(c.bearing(e)), EPSILON);
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177 | assertEquals(180, Math.toDegrees(n.bearing(c)), EPSILON);
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178 | assertEquals(270, Math.toDegrees(e.bearing(c)), EPSILON);
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179 | }
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180 |
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181 | /**
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182 | * Test of {@link LatLon#distance}
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183 | */
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184 | @Test
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185 | public void testDistance() {
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186 | assertEquals(0.0, LatLon.ZERO.distance(LatLon.ZERO), 0);
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187 | assertEquals(90.0, LatLon.ZERO.distance(LatLon.NORTH_POLE), 0);
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188 | assertEquals(180.0, LatLon.SOUTH_POLE.distance(LatLon.NORTH_POLE), 0);
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189 | }
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190 |
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191 | /**
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192 | * Test of {@link LatLon#distanceSq}
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193 | */
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194 | @Test
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195 | public void testDistanceSq() {
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196 | assertEquals(0.0, LatLon.ZERO.distanceSq(LatLon.ZERO), 0);
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197 | assertEquals(90d*90d, LatLon.ZERO.distanceSq(LatLon.NORTH_POLE), 0);
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198 | assertEquals(180d*180d, LatLon.SOUTH_POLE.distanceSq(LatLon.NORTH_POLE), 0);
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199 | }
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200 |
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201 | /**
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202 | * Test {@link LatLon#interpolate(LatLon, double)}
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203 | */
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204 | @Test
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205 | public void testInterpolate() {
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206 | LatLon ll1 = new LatLon(0, 0);
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207 | LatLon ll2 = new LatLon(30, 60);
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208 | LatLon ll3 = new LatLon(-70, -40);
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209 | // lat:
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210 | assertEquals(15, ll1.interpolate(ll2, 0.5).lat(), 1e-10);
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211 | assertEquals(0, ll1.interpolate(ll2, 0).lat(), 1e-10);
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212 | assertEquals(30, ll1.interpolate(ll2, 1).lat(), 1e-10);
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213 | assertEquals(0, ll3.interpolate(ll2, .7).lat(), 1e-10);
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214 | // lon
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215 | assertEquals(30, ll1.interpolate(ll2, 0.5).lon(), 1e-10);
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216 | assertEquals(0, ll1.interpolate(ll2, 0).lon(), 1e-10);
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217 | assertEquals(60, ll1.interpolate(ll2, 1).lon(), 1e-10);
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218 | assertEquals(0, ll3.interpolate(ll2, .4).lon(), 1e-10);
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219 | }
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220 |
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221 | /**
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222 | * Test {@link LatLon#isOutSideWorld}
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223 | * @deprecated to remove
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224 | */
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225 | @Test
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226 | @Deprecated
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227 | public void testIsOutSideWorld() {
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228 | assertFalse(LatLon.ZERO.isOutSideWorld());
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229 | assertTrue(LatLon.NORTH_POLE.isOutSideWorld());
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230 | assertTrue(LatLon.SOUTH_POLE.isOutSideWorld());
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231 | assertTrue(new LatLon(-181, 0).isOutSideWorld());
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232 | assertTrue(new LatLon(181, 0).isOutSideWorld());
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233 | }
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234 |
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235 | /**
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236 | * Test {@link LatLon#isValid}
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237 | */
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238 | @Test
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239 | public void testIsValid() {
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240 | assertTrue(LatLon.ZERO.isValid());
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241 | assertTrue(LatLon.NORTH_POLE.isValid());
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242 | assertTrue(LatLon.SOUTH_POLE.isValid());
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243 |
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244 | assertFalse(new LatLon(-91, 0).isValid());
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245 | assertFalse(new LatLon(91, 0).isValid());
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246 | assertFalse(new LatLon(0, -181).isValid());
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247 | assertFalse(new LatLon(0, 181).isValid());
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248 | }
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249 |
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250 | /**
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251 | * Test {@link LatLon#isWithin}
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252 | */
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253 | @Test
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254 | public void testIsWithin() {
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255 | assertTrue(LatLon.ZERO.isWithin(new Bounds(LatLon.ZERO)));
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256 | assertFalse(LatLon.ZERO.isWithin(new Bounds(LatLon.NORTH_POLE)));
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257 | }
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258 |
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259 | /**
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260 | * Test {@link LatLon#getCenter(LatLon)}
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261 | */
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262 | @Test
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263 | public void testGetCenter() {
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264 | LatLon ll1 = new LatLon(0, 0);
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265 | LatLon ll2 = new LatLon(30, 60);
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266 | LatLon ll3 = new LatLon(-70, -40);
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267 |
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268 | assertEquals(15, ll1.getCenter(ll2).lat(), 1e-10);
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269 | assertEquals(15, ll2.getCenter(ll1).lat(), 1e-10);
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270 | assertEquals(-20, ll3.getCenter(ll2).lat(), 1e-10);
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271 |
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272 | assertEquals(30, ll1.getCenter(ll2).lon(), 1e-10);
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273 | assertEquals(30, ll2.getCenter(ll1).lon(), 1e-10);
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274 | assertEquals(10, ll3.getCenter(ll2).lon(), 1e-10);
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275 | }
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276 |
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277 | }
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