@Test
public void testNoLayerIdRequest() throws Exception {
GetRasterTilesRequest request = new GetRasterTilesRequest();
request.setCrs(CRS);
GetRasterTilesResponse response = (GetRasterTilesResponse) dispatcher.execute(
GetRasterTilesRequest.COMMAND, request, null, "en");
Assert.assertTrue(response.isError());
Assert.assertTrue(response.getErrors().get(0) instanceof GeomajasException);
Assert.assertEquals(ExceptionCode.PARAMETER_MISSING,
((GeomajasException) response.getErrors().get(0)).getExceptionCode());
}