public void DisplayCommentCount()
{
IEnumerable<GroupComment> cmnt = new List<GroupComment> {
new GroupComment { GroupCommentId =1, GroupUpdateId = 1,CommentText="x"},
new GroupComment { GroupCommentId =2, GroupUpdateId = 1,CommentText="y"},
new GroupComment { GroupCommentId =3, GroupUpdateId = 1,CommentText="z"},
}.AsEnumerable();
groupCommentRepository.Setup(x => x.GetMany(It.IsAny<Expression<Func<GroupComment, bool>>>())).Returns(cmnt);
GroupController controller = new GroupController(groupService, groupUserService, userService, metricService, focusService, groupgoalService, groupInvitationService, securityTokenService, groupUpdateService, groupCommentService, goalStatusService, groupRequestService, followUserService, groupCommentUserService, groupUpdateSupportService, groupUpdateUserService);
JsonResult count = controller.DisplayCommentCount(1) as JsonResult;
Assert.IsNotNull(count);
Assert.AreEqual(3, count.Data);
}