public void WidgetCacheIsUsed()
{
var mockData = GetStubData();
var service = new WidgetService(mockData.Object);
var widgets1 = service.GetAllWidgets();
var widgets2 = service.GetAllWidgets();
//check behavior: cache should be used in second call
mockData.Verify(d => d.GetWidgets(), Times.Once);
Assert.AreEqual(widgets1.Count(), widgets2.Count());
}
public void BuyWidgetsAndDetermineTaxCalculation()
{
//arrange
var mockData = GetStubData();
var service = new WidgetService(mockData.Object);
var widgets = service.GetAllWidgets();
var widgetsToBuy = widgets.Take(2).ToList();
//act
var receiptModel = service.PurchaseWidgets(widgetsToBuy, "cash", widgetsToBuy.Sum(w => w.Price));
Assert.IsTrue(widgetsToBuy.Sum(w => w.Price) * 0.07m == receiptModel.Tax);
}
