/// <summary>
/// Configures the fixture to assert that the subject returns a breakfast with the specified name
/// and price as calculated from the specified breakfast items.
/// </summary>
public static ITestFixture ShouldReturnBreakfastWithCorrectNameAndPrice(this ITestFixture fixture,
string expectedName,
params BreakfastItem[] expectedItems) =>
fixture.ShouldReturnEquivalent(new Breakfast {
Name = expectedName, Price = expectedItems.Sum(i => i.Price)
});