### Question:
OneWayTrack extends Track { @Override public boolean accepts(Direction direction, Marble marble) { return this.track.accepts(direction, marble); } 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 acceptsLeft() { assertThat(track.accepts(Direction.LEFT, new Marble(MarbleType.GREEN))).isTrue(); }
@Test public void notAcceptsTop() { assertThat(track.accepts(Direction.TOP, new Marble(MarbleType.GREEN))).isFalse(); }
@Test public void notAcceptsBottom() { assertThat(track.accepts(Direction.BOTTOM, new Marble(MarbleType.GREEN))).isFalse(); }