### Question:
OneWayTrack extends Track { @Override public boolean isConnected() { return track.isConnected(); } OneWayTrack(Track track, Direction direction); Track getTrack(); Direction getDirection(); @Override void setTile(Tile tile); @Override boolean isConnected(); @Override boolean allowsConnection(Direction direction); @Override boolean accepts(Direction direction, Marble marble); @Override void accept(Direction direction, Marble marble); @Override boolean passesMidpoint(Direction direction, Marble marble);  }### Answer:
@Test public void isNotConnected() { Grid grid = new Grid(null, 1, 1); grid.place(0, 0, track); assertThat(track.isConnected()).isFalse(); }
@Test public void isConnected() { Grid grid = new Grid(null, 3, 1); grid.place(1, 0, track); assertThat(track.isConnected()).isTrue(); }