public void ProcessBuySell_ShouldNotSelectLowestBuy_WhenAfterBestSell()
{
decimal[] sharePrices = { 1.50m, 2m, 3m, 4m, 3m, 1m, 1.1m };
decimal lowestBuyPrice = sharePrices.Min();
var result = ProcessBuySell.CalculateBestProfit(sharePrices);
Assert.AreNotEqual(result.SellPrice, lowestBuyPrice);
}
public void ProcessBuySell_ShouldShowZeroes_WhenNoProfitsCalculated()
{
decimal[] sharePrices = { 5.50m, 5m, 4m, 3m, 2m, 1m };
decimal expectedZero = 0;
var result = ProcessBuySell.CalculateBestProfit(sharePrices);
Assert.AreEqual(result.BuyPrice, expectedZero);
Assert.AreEqual(result.SellPrice, expectedZero);
}
public void ProcessBuySell_ShouldCalculateResult_WhenValuesSupplied()
{
decimal[] sharePrices = { 1.50m, 2m, 3m, 4m, 3m, 1m, 1.1m };
decimal expectedBuy = 1.5m;
decimal expectedSell = 4m;
int expectedBuyDay = 1;
int expectedSellDay = 4;
var result = ProcessBuySell.CalculateBestProfit(sharePrices);
Assert.AreEqual(result.BuyPrice, expectedBuy);
Assert.AreEqual(result.SellPrice, expectedSell);
Assert.AreEqual(result.BuyDay, expectedBuyDay);
Assert.AreEqual(result.SellDay, expectedSellDay);
}
private void btnLoadFile_Click(object sender, EventArgs e)
{
lblResults.Text = string.Empty;
try
{
decimal[] pricesLastMonth = ReadInputFile.ReadPrices(lblSelectedFile.Text).ToArray();
var results = ProcessBuySell.CalculateBestProfit(pricesLastMonth);
lblResults.Text = $"{results.BuyDay}({results.BuyPrice}),{results.SellDay}({results.SellPrice})";
}
catch (Exception ex)
{
MessageBox.Show($"Your entry was not valid: {ex.Message}");
}
}