public void IsDrugInStock_True()
{
// Arrange
Drug drug = new Drug("Ibuprophen");
Fakes.FakeStockProvider stockProvider = new Fakes.FakeStockProvider(1);
Stock stock = new Stock(stockProvider);
// Act
bool isDrugInStock = stock.IsDrugInStock(drug);
// Assert
Assert.That(isDrugInStock, Is.True);
}