StockTest

[TestMethod]
public void BuyWhenLastTradeWasSell_Test()
{
    #region setup the stock service
    decimal simulatedCurrentPrice = 8.03m;

    Trade simulatedLastTrade = new Trade
    {
        Ticker = "ABC",
        Side = "sell",
        TradeDate = DateTimeOffset.Now.AddHours(-1),
        TradePrice = 10.00m
    };

    Trade simulatedBuy = new Trade
    {
        Ticker = "ABC",
        Side = "buy",
        TradeDate = DateTimeOffset.Now,
        TradePrice = 11.50m
    };

    //Here we simulate the current price being lower than 15% less 
    //than our last sell.
    //This should exercise the logic of a sell only.
    var stockServiceMock = new Mock<IStockService>()
        .GetCurrentPrice_Mock(simulatedCurrentPrice)
        .GetLastTrade_Mock(simulatedLastTrade)
        .Buy_Mock(simulatedBuy);
    #endregion

    #region setup the log service
    var logServiceMock = new Mock<ILogService>().Log_Mock("Should not get called");
    #endregion


    StocksLogic stocksLogic = new StocksLogic(stockServiceMock.Object, logServiceMock.Object);

    Trade theBuy = stocksLogic.GetRich("ABC");

    Assert.IsNotNull(theBuy);
    Assert.AreEqual("buy", theBuy.Side);
    Assert.AreEqual(theBuy.TradeDate, simulatedBuy.TradeDate, "Simulated buy date equals buy date");

    stockServiceMock.Verify(m => m.Buy(It.IsAny<string>(), It.IsAny<decimal>()), Times.Once);

    stockServiceMock.Verify(m => m.Sell(It.IsAny<string>(), It.IsAny<decimal>()), Times.Never);

    //Only exception will log so validate log was not called
    logServiceMock.Verify(m => m.Log(It.IsAny<string>()), Times.Never);
}