private void assertAdjacentHashesAre(String centerString, String[] adjacentStrings) {
GeoHash center = GeoHash.fromGeohashString(centerString);
GeoHash[] adjacent = center.getAdjacent();
for (String check : adjacentStrings) {
assertArrayContainsGeoHash(check, adjacent);
}
}
@Test
public void testNeibouringHashesNearMeridian() {
GeoHash hash = GeoHash.fromGeohashString("sp2j");
GeoHash west = hash.getWesternNeighbour();
assertEquals("ezrv", west.toBase32());
west = west.getWesternNeighbour();
assertEquals("ezrt", west.toBase32());
}
@Test
public void testThatAdjacentHashesHavePointInitialized() {
String center = "dqcjqc";
GeoHash geohash = GeoHash.fromGeohashString(center);
GeoHash[] adjacentHashes = geohash.getAdjacent();
for (GeoHash adjacentHash : adjacentHashes) {
assertNotNull(adjacentHash.getBoundingBox());
assertNotNull(adjacentHash.getBoundingBoxCenterPoint());
assertNotNull(adjacentHash.getPoint());
}
}
@Test
public void testKnownNeighbouringHashes() {
GeoHash h1 = GeoHash.fromGeohashString("u1pb");
assertEquals("u0zz", h1.getSouthernNeighbour().toBase32());
assertEquals("u1pc", h1.getNorthernNeighbour().toBase32());
assertEquals("u300", h1.getEasternNeighbour().toBase32());
assertEquals("u302", h1.getEasternNeighbour().getEasternNeighbour().toBase32());
assertEquals("u1p8", h1.getWesternNeighbour().toBase32());
assertEquals("sp2j", GeoHash.withCharacterPrecision(41.7, 0.08, 4).toBase32());
}
@Test
public void testIssue1() {
double lat = 40.390943;
double lon = -75.9375;
GeoHash hash = GeoHash.withCharacterPrecision(lat, lon, 12);
String base32 = "dr4jb0bn2180";
GeoHash fromRef = GeoHash.fromGeohashString(base32);
assertEquals(hash, fromRef);
assertEquals(base32, hash.toBase32());
assertEquals(base32, fromRef.toBase32());
hash = GeoHash.withCharacterPrecision(lat, lon, 10);
assertEquals("dr4jb0bn21", hash.toBase32());
}
@Test
public void testDecode() {
// for all lat/lon pairs check decoded point is in the same bbox as the
// geohash formed by encoder
for (GeoHash gh : RandomGeohashes.fullRange()) {
BoundingBox bbox = gh.getBoundingBox();
GeoHash decodedHash = GeoHash.fromGeohashString(gh.toBase32());
WGS84Point decodedCenter = decodedHash.getBoundingBoxCenterPoint();
assertTrue(
"bbox " + bbox + " should contain the decoded center value " + decodedCenter,
bbox.contains(decodedCenter));
BoundingBox decodedBoundingBox = decodedHash.getBoundingBox();
assertEquals(bbox, decodedBoundingBox);
assertEquals(gh, decodedHash);
assertEquals(gh.toBase32(), decodedHash.toBase32());
}
}
@Test
public void testAdjacentHashes() {
GeoHash[] adjacent = GeoHash.fromGeohashString("dqcw4").getAdjacent();
assertEquals(8, adjacent.length);
}