### Question:
ColorBag { public int size() { return colors.size(); }  void add(String color); void remove(String color); List<String> toList(); boolean contains(String color); int size();  }### Answer:
@Test @DisplayName("size of a color bag should match") void size() { int bagSize = colorBag.size(); assertEquals(6, bagSize, "failure - size of bag does not match"); }