public void Portfolio_format_when_it_has_a_single_asset()
{
var portfolio = new Portfolio();
portfolio.AddAsset(new Asset(new Symbol("MSFT"), 100));
PortfolioFormatter.Format(portfolio).Should().Be("You have 100 MSFT shares");
}
public void Portfolio_format_when_there_is_no_portfolio()
{
PortfolioFormatter.Format(null).Should().BeNull();
}
public void Portfolio_format_when_it_has_no_assets()
{
var portfolio = new Portfolio();
PortfolioFormatter.Format(portfolio).Should().Be("You have no assets");
}