/**
* Some checks for the getValue(Comparable, Comparable) method.
*/
public void testGetValueByKey() {
KeyedObjects2D data = new KeyedObjects2D();
data.addObject("Obj1", "R1", "C1");
data.addObject("Obj2", "R2", "C2");
assertEquals("Obj1", data.getObject("R1", "C1"));
assertEquals("Obj2", data.getObject("R2", "C2"));
assertNull(data.getObject("R1", "C2"));
assertNull(data.getObject("R2", "C1"));