public void SellStock_WithInvalidSymbol_ThrowsInvalidSymbolException()
{
string symbol = "T";
Account seller = CreateAccount(symbol, 10);
Assert.ThrowsAsync <InsufficientSharesException>(() => sellStockService.SellStock(seller, symbol, 20));
}
public void SellStock_WithInsufficientShares_ThrowsInsufficientSharesException()
{
string expectedSymbol = "T";
int expectedAccountShares = 0;
int expectedRequiredShares = 10;
Account seller = CreateAccount(expectedSymbol, expectedAccountShares);
InsufficientSharesException exception = Assert.ThrowsAsync <InsufficientSharesException>(
() => _sellStockService.SellStock(seller, expectedSymbol, expectedRequiredShares));
string actualSymbol = exception.Symbol;
double actualAccountBalance = exception.AccountShares;
double actualRequiredBalance = exception.RequiredShares;
Assert.AreEqual(expectedSymbol, actualSymbol);
Assert.AreEqual(expectedAccountShares, actualAccountBalance);
Assert.AreEqual(expectedRequiredShares, actualRequiredBalance);
}