/**
* Tests the attaching of the LeftInputAdapterNode to an ObjectSource
*
* @throws Exception
*/
@Test
public void testAttach() throws Exception {
final MockObjectSource source = new MockObjectSource(15);
final LeftInputAdapterNode liaNode = new LeftInputAdapterNode(1, source, buildContext);
final Field field = ObjectSource.class.getDeclaredField("sink");
field.setAccessible(true);
ObjectSinkPropagator sink = (ObjectSinkPropagator) field.get(source);
assertEquals(1, liaNode.getId());
assertNotNull(sink);
liaNode.attach();
sink = (ObjectSinkPropagator) field.get(source);
assertEquals(1, sink.getSinks().length);
assertSame(liaNode, sink.getSinks()[0]);
}
@Test
public void testAddObjectSink() throws Exception {
final MockObjectSource source = new MockObjectSource(15);
// We need to re-assign this var each time the sink changes references
final Field field = ObjectSource.class.getDeclaredField("sink");
field.setAccessible(true);
ObjectSinkPropagator sink = (ObjectSinkPropagator) field.get(source);
assertSame(EmptyObjectSinkAdapter.getInstance(), sink);
final MockObjectSink sink1 = new MockObjectSink();
source.addObjectSink(sink1);
sink = (ObjectSinkPropagator) field.get(source);
assertSame(SingleObjectSinkAdapter.class, sink.getClass());
assertEquals(1, sink.getSinks().length);
final MockObjectSink sink2 = new MockObjectSink();
source.addObjectSink(sink2);
sink = (ObjectSinkPropagator) field.get(source);
assertSame(CompositeObjectSinkAdapter.class, sink.getClass());
assertEquals(2, sink.getSinks().length);
final MockObjectSink sink3 = new MockObjectSink();
source.addObjectSink(sink3);
assertSame(CompositeObjectSinkAdapter.class, sink.getClass());
assertEquals(3, sink.getSinks().length);
source.removeObjectSink(sink2);
assertSame(CompositeObjectSinkAdapter.class, sink.getClass());
assertEquals(2, sink.getSinks().length);
source.removeObjectSink(sink1);
sink = (ObjectSinkPropagator) field.get(source);
assertSame(SingleObjectSinkAdapter.class, sink.getClass());
assertEquals(1, sink.getSinks().length);
source.removeObjectSink(sink3);
sink = (ObjectSinkPropagator) field.get(source);
assertSame(EmptyObjectSinkAdapter.getInstance(), sink);
assertEquals(0, sink.getSinks().length);
}