BitSharper.Test.ChainSplitTests.TestDoubleSpendOnFork C# (CSharp) Method

        public void TestDoubleSpendOnFork()
        {
            // Check what happens when a re-org happens and one of our confirmed transactions becomes invalidated by a
            // double spend on the new best chain.

            var eventCalled = false;
            _wallet.DeadTransaction += (sender, e) => eventCalled = true;

            var b1 = _unitTestParams.GenesisBlock.CreateNextBlock(_coinbaseTo);
            _chain.Add(b1);

            var t1 = _wallet.CreateSend(_someOtherGuy, Utils.ToNanoCoins(10, 0));
            var yetAnotherGuy = new EcKey().ToAddress(_unitTestParams);
            var t2 = _wallet.CreateSend(yetAnotherGuy, Utils.ToNanoCoins(20, 0));
            _wallet.ConfirmSend(t1);
            // Receive t1 as confirmed by the network.
            var b2 = b1.CreateNextBlock(new EcKey().ToAddress(_unitTestParams));
            b2.AddTransaction(t1);
            b2.Solve();
            _chain.Add(b2);

            // Now we make a double spend become active after a re-org.
            var b3 = b1.CreateNextBlock(new EcKey().ToAddress(_unitTestParams));
            b3.AddTransaction(t2);
            b3.Solve();
            _chain.Add(b3); // Side chain.
            var b4 = b3.CreateNextBlock(new EcKey().ToAddress(_unitTestParams));
            _chain.Add(b4); // New best chain.

            // Should have seen a double spend.
            Assert.IsTrue(eventCalled);
            Assert.AreEqual(Utils.ToNanoCoins(30, 0), _wallet.GetBalance());
        }