public async Task ReturnCorrectAmount()
{
// setup in-memory database
var dbContextOptions = new Microsoft.EntityFrameworkCore.DbContextOptionsBuilder <VmDbContext>().UseInMemoryDatabase("VMDB");
var dbContext = new VmDbContext(dbContextOptions.Options);
// seed some data
DataSeedingHelper.Seed(dbContext);
var service = new VendingMachineService(dbContext);
var product = (await service.GetProductsAsync()).First();
var change = new Dictionary <decimal, int>();
var payCoins = new Dictionary <decimal, int>();
payCoins.Add(0.1m, 5);
payCoins.Add(1.0m, 2);
var ok = await service.PurchaseAsync(product.Id, payCoins, change);
Assert.True(ok);
var changeSum = change.ToList().Sum(x => x.Key * x.Value);
var paiedSum = payCoins.ToList().Sum(x => x.Key * x.Value);
Assert.Equal(changeSum, paiedSum - product.Price);
}
public VmRepository(VmDbContext context)
{
Guard.ArgumentNotNull(context, "context");
this.DbContext = context;
this.DbSet = this.DbContext.Set <TEntity>();
}
public OrderRepository(VmDbContext dbContext)
: base(dbContext)
{
}
public ProductRepository(VmDbContext dbContext)
: base(dbContext)
{
}
public VendingMachineService(VmDbContext dbContext)
{
this.dbContext = dbContext;
}