1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io;
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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.assertNull;
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7 | import static org.junit.Assert.assertTrue;
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8 | import static org.junit.jupiter.api.Assertions.assertThrows;
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9 |
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10 | import java.io.ByteArrayInputStream;
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11 | import java.io.InputStream;
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12 | import java.nio.charset.StandardCharsets;
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13 | import java.nio.file.Files;
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14 | import java.nio.file.Paths;
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15 | import java.util.ArrayList;
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16 | import java.util.Collection;
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17 | import java.util.List;
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18 | import java.util.Optional;
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19 | import java.util.stream.IntStream;
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20 |
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21 | import org.junit.Rule;
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22 | import org.junit.Test;
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23 | import org.openstreetmap.josm.TestUtils;
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24 | import org.openstreetmap.josm.data.coor.LatLon;
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25 | import org.openstreetmap.josm.data.osm.Node;
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26 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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27 | import org.openstreetmap.josm.data.osm.Way;
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28 | import org.openstreetmap.josm.testutils.JOSMTestRules;
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29 |
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30 | /**
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31 | * Unit tests of {@link GeoJSONReader}.
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32 | */
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33 | public class GeoJSONReaderTest {
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34 |
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35 | /**
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36 | * Setup test.
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37 | */
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38 | @Rule
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39 | public JOSMTestRules rules = new JOSMTestRules();
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40 |
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41 | /**
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42 | * Test reading a GeoJSON file.
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43 | * @throws Exception in case of error
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44 | */
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45 | @Test
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46 | public void testReadGeoJson() throws Exception {
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47 | try (InputStream in = Files.newInputStream(Paths.get(TestUtils.getTestDataRoot(), "geo.json"))) {
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48 | final List<OsmPrimitive> primitives = new ArrayList<>(new GeoJSONReader()
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49 | .doParseDataSet(in, null)
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50 | .getPrimitives(it -> true));
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51 |
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52 | assertExpectedGeoPrimitives(primitives);
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53 | }
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54 | }
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55 |
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56 | /**
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57 | * Tests reading a GeoJSON file that is line by line separated, per RFC 7464
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58 | * @throws Exception in case of an error
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59 | */
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60 | @Test
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61 | public void testReadLineByLineGeoJSON() throws Exception {
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62 | try (InputStream in = Files.newInputStream(Paths.get(TestUtils.getTestDataRoot(), "geoLineByLine.json"))) {
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63 | final List<OsmPrimitive> primitives = new ArrayList<>(new GeoJSONReader()
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64 | .doParseDataSet(in, null)
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65 | .getPrimitives(it -> true));
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66 |
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67 | assertExpectedGeoPrimitives(primitives);
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68 | }
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69 | }
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70 |
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71 | private void assertExpectedGeoPrimitives(Collection<OsmPrimitive> primitives) {
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72 | assertEquals(20, primitives.size());
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73 |
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74 | final Node node1 = new Node(new LatLon(0.5, 102.0));
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75 | final Optional<OsmPrimitive> foundNode1 = primitives.stream()
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76 | .filter(it -> areEqualNodes(it, node1))
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77 | .findFirst();
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78 | assertTrue(foundNode1.isPresent());
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79 | assertEquals("valueA", foundNode1.get().get("propA"));
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80 |
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81 | final Way way1 = new Way();
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82 | way1.addNode(new Node(new LatLon(0.5, 102.0)));
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83 | way1.addNode(new Node(new LatLon(1, 103)));
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84 | way1.addNode(new Node(new LatLon(0, 104)));
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85 | way1.addNode(new Node(new LatLon(1, 105)));
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86 | final Optional<OsmPrimitive> foundWay1 = primitives.stream()
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87 | .filter(it -> areEqualWays(it, way1))
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88 | .findFirst();
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89 | assertTrue(foundWay1.isPresent());
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90 | assertEquals("valueB", foundWay1.get().get("propB"));
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91 | assertEquals("0.0", foundWay1.get().get("propB2"));
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92 | assertEquals(foundNode1.get(), ((Way) foundWay1.get()).firstNode());
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93 | assertEquals("valueA", ((Way) foundWay1.get()).firstNode().get("propA"));
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94 |
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95 | final Way way2 = new Way();
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96 | way2.addNode(new Node(new LatLon(40, 180)));
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97 | way2.addNode(new Node(new LatLon(50, 180)));
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98 | way2.addNode(new Node(new LatLon(50, 170)));
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99 | way2.addNode(new Node(new LatLon(40, 170)));
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100 | way2.addNode(new Node(new LatLon(40, 180)));
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101 | final Optional<OsmPrimitive> foundWay2 = primitives.stream()
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102 | .filter(it -> areEqualWays(it, way2))
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103 | .findFirst();
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104 | assertTrue(foundWay2.isPresent());
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105 | assertEquals(
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106 | ((Way) foundWay2.get()).getNode(0),
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107 | ((Way) foundWay2.get()).getNode(((Way) foundWay2.get()).getNodesCount() - 1)
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108 | );
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109 |
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110 | final Way way3 = new Way();
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111 | way3.addNode(new Node(new LatLon(40, -170)));
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112 | way3.addNode(new Node(new LatLon(50, -170)));
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113 | way3.addNode(new Node(new LatLon(50, -180)));
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114 | way3.addNode(new Node(new LatLon(40, -180)));
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115 | way3.addNode(new Node(new LatLon(40, -170)));
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116 | final Optional<OsmPrimitive> foundWay3 = primitives.stream()
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117 | .filter(it -> areEqualWays(it, way3))
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118 | .findFirst();
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119 | assertTrue(foundWay3.isPresent());
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120 | assertEquals(
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121 | ((Way) foundWay3.get()).getNode(0),
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122 | ((Way) foundWay3.get()).getNode(((Way) foundWay3.get()).getNodesCount() - 1)
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123 | );
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124 |
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125 | final Way way4 = new Way();
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126 | way4.addNode(new Node(new LatLon(0, 100)));
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127 | way4.addNode(new Node(new LatLon(0, 101)));
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128 | way4.addNode(new Node(new LatLon(1, 101)));
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129 | way4.addNode(new Node(new LatLon(1, 100)));
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130 | way4.addNode(new Node(new LatLon(0, 100)));
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131 | final Optional<OsmPrimitive> foundWay4 = primitives.stream()
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132 | .filter(it -> areEqualWays(it, way4))
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133 | .findFirst();
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134 | assertTrue(foundWay4.isPresent());
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135 | assertEquals(
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136 | ((Way) foundWay4.get()).getNode(0),
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137 | ((Way) foundWay4.get()).getNode(((Way) foundWay4.get()).getNodesCount() - 1)
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138 | );
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139 | assertEquals("valueD", foundWay4.get().get("propD"));
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140 | assertFalse(foundWay4.get().hasTag("propD2"));
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141 | assertEquals("true", foundWay4.get().get("propD3"));
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142 | assertFalse(foundWay4.get().hasKey("propD4"));
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143 | assertNull(foundWay4.get().get("propD4"));
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144 | }
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145 |
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146 | /**
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147 | * Test reading a GeoJSON file with a named CRS.
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148 | * @throws Exception in case of error
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149 | */
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150 | @Test
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151 | public void testReadGeoJsonNamedCrs() throws Exception {
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152 | try (InputStream in = Files.newInputStream(Paths.get(TestUtils.getTestDataRoot(), "geocrs.json"))) {
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153 | final List<OsmPrimitive> primitives = new ArrayList<>(new GeoJSONReader()
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154 | .doParseDataSet(in, null)
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155 | .getPrimitives(it -> true));
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156 | assertEquals(24, primitives.size());
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157 | assertTrue(primitives.stream()
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158 | .anyMatch(it -> areEqualNodes(it, new Node(new LatLon(52.5840213, 13.1724145)))));
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159 | }
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160 | }
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161 |
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162 | /**
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163 | * Test reading a JSON file which is not a proper GeoJSON (type missing).
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164 | */
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165 | public void testReadGeoJsonWithoutType() {
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166 | assertThrows(IllegalDataException.class, () ->
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167 | new GeoJSONReader().doParseDataSet(new ByteArrayInputStream("{}".getBytes(StandardCharsets.UTF_8)), null));
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168 | }
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169 |
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170 | private static boolean areEqualNodes(final OsmPrimitive p1, final OsmPrimitive p2) {
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171 | return (p1 instanceof Node)
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172 | && (p2 instanceof Node)
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173 | && ((Node) p1).getCoor().equalsEpsilon(((Node) p2).getCoor());
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174 | }
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175 |
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176 | private static boolean areEqualWays(final OsmPrimitive p1, final OsmPrimitive p2) {
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177 | if (
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178 | (!(p1 instanceof Way))
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179 | || (!(p2 instanceof Way))
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180 | || ((Way) p1).getNodes().size() != ((Way) p2).getNodes().size()
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181 | ) {
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182 | return false;
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183 | }
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184 | return IntStream.range(0, ((Way) p1).getNodes().size())
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185 | .allMatch(i -> areEqualNodes(((Way) p1).getNode(i), ((Way) p2).getNode(i)));
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186 | }
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187 | }
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