public void GroupsDiscussRepliesAddTest()
{
var topicId = "72157630982877126";
var message = "Test message reply\r\n" + DateTime.Now.ToString("o");
var newMessage = "New Message reply\r\n" + DateTime.Now.ToString("o");
AuthInstance.GroupsDiscussRepliesAdd(topicId, message);
var topicReplies = AuthInstance.GroupsDiscussRepliesGetList(topicId, 1, 100);
var reply = topicReplies.FirstOrDefault(r => r.Message == message);
Assert.IsNotNull(reply, "Cannot find matching message.");
AuthInstance.GroupsDiscussRepliesEdit(topicId, reply.ReplyId, newMessage);
var reply2 = AuthInstance.GroupsDiscussRepliesGetInfo(topicId, reply.ReplyId);
Assert.AreEqual(newMessage, reply2.Message, "Message should have been updated.");
AuthInstance.GroupsDiscussRepliesDelete(topicId, reply.ReplyId);
topicReplies = AuthInstance.GroupsDiscussRepliesGetList(topicId, 1, 100);
var reply3 = topicReplies.FirstOrDefault(r => r.ReplyId == reply.ReplyId);
Assert.IsNull(reply3, "Reply should not exist anymore.");
}