	@Test
	public void testGeoHashCoverBoundingBoxWithUpperLeftAndLowerRight() {

		List<String> results = GeoHashUtil.coverBoundingBox(52.449732623925755,113.309593200683594,52.45559096922489,3.3178329467773445, 5);
		String[] resultArr = results.toArray(new String[results.size()]);
		System.out.println(results);
		String[] expectedArr = new String[] { "9yzf6", "9yzf7", "9yzfd", "9yzfe", "9yzff", "9yzfg", "9yzfk", "9yzfs", "9yzfu" };
		assertArrayEquals(expectedArr, resultArr);
	}