@Test
public void checkVisitation() {
// Create a new component to visit.
PlantComposite component = new PlantComposite();
// Create an invalid visitor, and try to visit the component.
FakeComponentVisitor visitor = null;
component.accept(visitor);
// Check that the component wasn't visited yet.
assertFalse(wasVisited);
// Create a valid visitor, and try to visit the component.
visitor = new FakeComponentVisitor();
component.accept(visitor);
// Check that the component was visited.
assertTrue(wasVisited);
// Grab the visitor's visited component.
Component visitorComponent = visitor.component;
// Check that the visitor's component is the same component we initially
// created.
assertTrue(component == visitorComponent);
assertTrue(component.equals(visitorComponent));
// ---- Check PlantComponent visitation. ---- //
wasVisited = false;
// Create an invalid visitor, and try to visit the component.
FakePlantComponentVisitor plantVisitor = null;
component.accept(plantVisitor);
// Check that the component wasn't visited yet.
assertFalse(wasVisited);
// Create a valid visitor, and try to visit the component.
plantVisitor = new FakePlantComponentVisitor();
component.accept(plantVisitor);
// Check that the component was visited.
assertTrue(wasVisited);
// Grab the visitor's visited component.
PlantComponent visitorPlantComponent = plantVisitor.component;
// Check that the visitor's component is the same component we initially
// created.
assertTrue(component == visitorPlantComponent);
assertTrue(component.equals(visitorPlantComponent));
return;
}
/** Checks the copy and clone methods for PlantComposites. */
@Test
public void checkCopying() {
// Initialize objects for testing.
PlantComposite object = new PlantComposite();
PlantComposite copy = new PlantComposite();
PlantComposite clone = null;
// Set up the object.
object.addPlantComponent(new PlantComponent("bumblebee"));
// Make sure the objects are not equal before copying.
assertFalse(object == copy);
assertFalse(object.equals(copy));
// Copy the object.
copy.copy(object);
// Make sure the references are different but contents the same.
assertFalse(object == copy);
assertTrue(object.equals(copy));
// Do the same for the clone operation.
// Make sure the objects are not equal before copying.
assertFalse(object == clone);
assertFalse(object.equals(clone));
// Clone the object.
clone = (PlantComposite) object.clone();
// Make sure the references are different but contents the same.
assertFalse(object == clone);
assertTrue(object.equals(clone));
assertFalse(copy == clone);
assertTrue(copy.equals(clone));
return;
}
/**
* Checks equality and hash codes for PlantComposites. All child components from two composites
* should be compared.
*/
@Test
public void checkEquality() {
// Initialize objects for testing.
PlantComposite object = new PlantComposite();
PlantComposite equalObject = new PlantComposite();
// Set up the two objects.
object.addPlantComponent(new PlantComponent("optimus"));
equalObject.addPlantComponent(new PlantComponent("optimus"));
// Make sure the references are different but the objects are equal.
assertFalse(object == equalObject);
assertTrue(object.equals(equalObject));
assertTrue(equalObject.equals(object));
// Check the hash codes.
assertEquals(object.hashCode(), equalObject.hashCode());
// ---- Check inequality. ---- //
// Create an unequal object.
PlantComposite unequalObject = equalObject;
unequalObject.getComponents().get(0).setName("megatron");
// Make sure the references are different and the objects unequal.
assertFalse(object == equalObject);
assertFalse(object.equals(unequalObject));
assertFalse(unequalObject.equals(object));
// Check the hash codes.
assertFalse(object.hashCode() == unequalObject.hashCode());
// Try other invalid objects.
assertFalse(object == null);
assertFalse("starscream".equals(object));
return;
}