MockWindowsPhoneStoreService.cs

using MockIAPLib;
using Store = MockIAPLib;
 
namespace YourAPP
{
    
    /// <summary>
    /// Service for mocking in-app purchases in debug mode
    /// </summary>
    public class MockWindowsPhoneStoreService: IWindowsPhoneStoreService
    {
        /// <summary>
        /// Checks if a product is purchased
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>True if the product is purchased</returns>
        public bool IsPurchased(string productId)
        {
            if (String.IsNullOrEmpty(productId)) return false;
 
            var licenseInformation = CurrentApp.LicenseInformation;
            return licenseInformation.ProductLicenses[productId].IsActive;
        }
 
        /// <summary>
        /// Tries to purchase a product
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>True on success, false otherwise</returns>
        public async Task<bool> Purchase(string productId)
        {
            if (String.IsNullOrEmpty(productId))
            {
                return false;
            }
 
 
            try
            {
                await CurrentApp.RequestProductPurchaseAsync(productId, false);
 
                try
                {
                    var licenses = CurrentApp.LicenseInformation.ProductLicenses;
                    if (licenses[productId].IsConsumable && licenses[productId].IsActive)
                    {
                        CurrentApp.ReportProductFulfillment(productId);
                    }
                }
                catch (Exception e)
                {
 
                }
 
                return true;
 
            }
            catch (Exception ex)
            {
                return false;
            }
        }
 
        /// <summary>
        /// Gets the price of a product
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>Product price</returns>
        public async Task<string> GetPrice(string productId)
        {
            try
            {
                var products = await CurrentApp.LoadListingInformationAsync();
 
                var product = products.ProductListings.SingleOrDefault(l => l.Value.ProductId == productId);
                if (product.Value == null) return string.Empty;
 
                return product.Value.FormattedPrice;
            }
            catch
            {
                return string.Empty;
            }
        }
    }
}

IAP.cs

#if DEBUG
            container.RegisterSingleton(typeof(IWindowsPhoneStoreService), "windowsPhoneStoreService", typeof(MockWindowsPhoneStoreService));
#else
            container.RegisterSingleton(typeof(IWindowsPhoneStoreService), "windowsPhoneStoreService", typeof(WindowsPhoneStoreService));
#endif

IWindowsPhoneStoreService.cs

    /// <summary>
    /// Interface for Windows Phone Store service
    /// </summary>
    public interface IWindowsPhoneStoreService
    {
        /// <summary>
        /// Checks if a product is purchased
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>True if the product is purchased</returns>
        bool IsPurchased(string productId);

        /// <summary>
        /// Tries to purchase a product
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>True on success, false otherwise</returns>
        Task<bool> Purchase(string productId);

        /// <summary>
        /// Gets the price of a product
        /// </summary>
        /// <param name="productId">Product id</param>
        /// <returns>Product price</returns>
        Task<string> GetPrice(string productId);        
    }

SetupMockIAP.cs

private void SetupMockIAP()
{
            MockIAP.Init();
 
            MockIAP.RunInMockMode(true);
            MockIAP.SetListingInformation(1, "en-us", "A description", "1", "TestApp");
 
            // Add some more items manually.
            ProductListing p = new ProductListing
            {
                Name = "img.2",
                ImageUri = new Uri("/Res/Image/2.jpg", UriKind.Relative),
                ProductId = "img.2",
                ProductType = Windows.ApplicationModel.Store.ProductType.Durable,
                Keywords = new string[] { "image" },
                Description = "An image",
                FormattedPrice = "1.0",
                Tag = string.Empty
            };
            MockIAP.AddProductListing("img.2", p);
}