### Question:
TSpace implements LocalSpace<K,V>, Loggeable, Runnable { @Override public synchronized V in (Object key) { Object obj; while ((obj = inp (key)) == null) { try { this.wait (); } catch (InterruptedException e) { } } return (V) obj; } TSpace(); @Override void out(K key, V value); @Override void out(K key, V value, long timeout); @Override synchronized V rdp(Object key); @Override synchronized V inp(Object key); @Override synchronized V in(Object key); @Override synchronized V in(Object key, long timeout); @Override synchronized V rd(Object key); @Override synchronized V rd(Object key, long timeout); @Override synchronized void nrd(Object key); @Override synchronized V nrd(Object key, long timeout); @Override void run(); void gc(); @Override synchronized int size(Object key); @Override synchronized void addListener(Object key, SpaceListener listener); @Override synchronized void addListener(Object key, SpaceListener listener, long timeout); @Override synchronized void removeListener(Object key, SpaceListener listener); boolean isEmpty(); @Override synchronized Set<K> getKeySet(); String getKeysAsString(); @Override void dump(PrintStream p, String indent); void notifyListeners(Object key, Object value); @Override void push(K key, V value); @Override void push(K key, V value, long timeout); @Override void put(K key, V value); @Override void put(K key, V value, long timeout); @Override boolean existAny(K[] keys); @Override boolean existAny(K[] keys, long timeout); Map getEntries(); void setEntries(Map entries); static final long GCDELAY; }### Answer:
@Test public void testIn() throws Throwable { TSpace tSpace = new TSpace(); Object result = tSpace.in(Long.valueOf(0L), 1L); assertNull(result, "result"); assertEquals(0, tSpace.entries.size(), "tSpace.entries.size()"); }