### Question:
GroupMembership { public boolean isSharing() { return sharing; } GroupMembership(int userId, int groupId); int getUserId(); void setUserId(int userId); int getGroupId(); void setGroupId(int groupId); Date getSharingUntil(); void setSharingUntil(Date sharingUntil); boolean isSharing(); void setSharing(boolean sharing); @Override boolean equals(Object o); @Override int hashCode();  }### Answer:
@Test public void isSharing() throws Exception { assertTrue(!groupMembership1.isSharing()); }