public void ToMutationEvent_Should_ReturnMutationForEachItem()
{
var product = ProductFactory.GetProduct("0");
product.Available.Should().Be(10);
var product1 = ProductFactory.GetProduct("1");
var product2 = ProductFactory.GetProduct("2");
var mutations = new List <Product>
{
product1,
product2
};
var actual = MutationFactory.ToMutationEvent <Product, Product, Guid, int>(
x => x.Available,
mutations,
x => x.Id,
x => x.InStock)
.ToList();
Assert.Equal(mutations.Count, actual.Count);
var mutation1 = actual[0];
var mutation2 = actual.Last();
mutation1.Revert(product);
product.Available.Should().Be(10 - product1.InStock);
mutation2.Apply(product);
product.Available.Should().Be(10 - product1.InStock + product2.InStock);
}
internal static List <IEvent <Product, string> > GetChanges(Guid itemId)
{
var priceChanges = ProductFactory.GetProductPriceChanges(itemId).ToList();
var stockMutationChanges = ProductFactory.GetProductStockMutations(itemId).ToList();
var changes = ChangeFactory.ToOrderedChangeEvent <Product, ProductPriceChange, string, double, DateTime>(
x => x.Price,
0,
priceChanges,
x => x.Id,
x => x.Price,
x => x.ChangeDate).Cast <IEvent <Product, string> >().ToList();
changes.AddRange(MutationFactory.ToMutationEvent <Product, ProductStockMutation, string, int>(
x => x.Available,
stockMutationChanges,
x => x.Id,
x => x.ApplyableAmount).Cast <IEvent <Product, string> >());
changes.AddRange(MutationFactory.ToOrderedMutationEvent <Product, ProductStockMutation, string, int, DateTime>(
x => x.InStock,
stockMutationChanges,
x => x.Id,
x => x.ApplyableAmount,
x => x.DeliveryDate.Date).Cast <IEvent <Product, string> >());
return(changes);
}