@Test
public void testCreate() {

    final MultiLevelSource lonSource = new TestMultiLevelSource(10, 10);
    final MultiLevelSource latSource = new TestMultiLevelSource(10, 10);
    final LonLatFunction function = new TestLonLatFunction();
    assertNotNull(LonLatMultiLevelSource.create(lonSource, latSource, function, DataBuffer.TYPE_DOUBLE));
    assertNotNull(LonLatMultiLevelSource.create(lonSource, latSource, function, DataBuffer.TYPE_FLOAT));
}