Add vectortile decoding test

.gitignore

@@ -25,6 +25,7 @@ android/libs/graphhopper-*-android.jar
 /web/dependency-reduced-pom.xml
 *.pbf
 !/core/src/test/resources/com/graphhopper/reader/osm/*.pbf
+!/web-bundle/src/test/resources/no/ecc/vectortile/*.pbf
 *.dem
 *.log
 /logs
@@ -42,4 +43,4 @@ local.properties
 **/node_modules
 .DS_Store
 /graph-cache
-package-lock.json
+package-lock.json

web-bundle/src/test/java/no/ecc/vectortile/VectorTileDecoderTest.java

@@ -0,0 +1,42 @@
+package no.ecc.vectortile;
+
+import org.junit.jupiter.api.Test;
+import vector_tile.VectorTile;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class VectorTileDecoderTest {
+
+    @Test
+    public void testDecode() throws IOException {
+        byte[] data;
+        try (InputStream is = getClass().getResourceAsStream("small.vector.pbf")) {
+            if (is == null) {
+                fail("Could not find test data");
+            }
+            data = is.readAllBytes();
+        }
+        VectorTileDecoder decoder = new VectorTileDecoder();
+        VectorTileDecoder.FeatureIterable iter = decoder.decode(data);
+
+        assertEquals(20, iter.getLayerNames().size());
+        assertEquals(2759, iter.asList().size());
+
+        VectorTileDecoder.Feature feature = iter.iterator().next();
+
+        assertEquals("landuse", feature.getLayerName());
+        assertEquals(3000000224480L, feature.getAttributes().get("osm_id"));
+        assertEquals("Polygon", feature.getGeometry().getGeometryType());
+        assertEquals(32, feature.getGeometry().getNumPoints());
+        String wkt = "POLYGON ((-4 67.3125, -0.5625 62.4375, 13.875 46.5625, 18.625 42.8125, 26.125"
+                + " 38.0625, 53.6875 26.5625, 78.375 27.6875, 109.4375 95.6875, 25.75 135.0625, 18.75"
+                + " 140.375, -4 118.625, -4 67.3125), (57.125 31.375, 58.5 40.125, 58.125 48.8125,"
+                + " 59.875 50.0625, 61.5625 51.25, 64 48.875, 65.0625 47.875, 66.75 46.875, 70 46.25,"
+                + " 73.8125 46.5, 75.75 47, 75.8125 46, 77 35.5625, 72.1875 32.875, 66.625 31.5625,"
+                + " 64.5 31.375, 61.5625 31.125, 57.125 31.375, 57.125 31.375, 57.125 31.375))";
+        assertEquals(wkt, feature.getGeometry().toText());
+    }
+}