public void CreateBanana_Should_Not_Be_Null()
{
var symbolFactory = new SymbolFactory();
var result = symbolFactory.CreateBanana();
Assert.NotNull(result);
}
public void CreateBanana_Should_Be_AssignableFrom_ISymbol_Interface()
{
var symbolFactory = new SymbolFactory();
var result = symbolFactory.CreateBanana();
Assert.IsAssignableFrom <ISymbol>(result);
}
