@Test
public void gridCoverageLayerHelper() throws Exception {

    float[][] data = {
        {1, 2, 3, 4},
        {5, 6, 7, 8}
    };
    
    ReferencedEnvelope env = new ReferencedEnvelope(0, 4, 0, 2, null);
    GridCoverageFactory gcf = CoverageFactoryFinder.getGridCoverageFactory(null);
    GridCoverage2D cov = gcf.create("coverage", data, env);
    Layer layer = new GridCoverageLayer(cov, null);
    
    InfoToolHelper helper = InfoToolHelperLookup.getHelper(layer);
    assertNotNull(helper);
    assertEquals(GridCoverageLayerHelper.class, helper.getClass());
}