public void Get_last_block()
        {
            var node = new Mock <INode>();

            node.SetupGet(n => n.Blockchain).Returns(blockchain);
            var controller = new ChainController(node.Object, new NullLogger <ChainController>());

            var block = controller.GetLast();

            Assert.IsNotNull(block);
            Assert.AreEqual(1, block.Questions.Count);
            Assert.AreEqual(1, block.Members.Count);
        }