public void ShouldReturnTrueIfChainIsValid()
        {
            BasicChain bc = new BasicChain();

            Assert.That(bc.Blockchain.Count, Is.Not.Zero);

            bc.AddSampleBlocks();
            bool isChainValid = bc.IsBlockchainValid();

            Assert.IsTrue(isChainValid);
        }
        public void ShouldReturnFalseIfChainIsInvalid()
        {
            BasicChain bc = new BasicChain();

            Assert.That(bc.Blockchain.Count, Is.Not.Zero);

            bc.AddSampleBlocks();
            bc.Blockchain.Add(new Block("blah blah", "Setting up to fail"));
            bool isChainValid = bc.IsBlockchainValid();

            Assert.IsFalse(isChainValid);
        }