public async Task ChangePrice()
{
var(_, repository, mediator) = TestSetup.Init();
var handler = new ProductCommandHandlers(repository, mediator);
var id = Guid.NewGuid();
var productCreateCommand = new ProductCreateCommand
{
Id = id,
Name = "mock name",
Price = 500
};
await handler.Handle(productCreateCommand, CancellationToken.None);
const int newPrice = 600;
var priceChangeCommand = new ProductChangePriceCommand
{
ProductId = id,
Price = newPrice
};
await handler.Handle(priceChangeCommand, CancellationToken.None);
var agg = await repository.GetHydratedAggregate <Kanayri.Domain.Product.Product>(id, CancellationToken.None);
Assert.Equal(newPrice, agg.Price);
}
public async Task Handle(ProductChangePriceCommand command, CancellationToken cancellationToken)
{
var aggregate = await _repository.GetHydratedAggregate <Product>(command.ProductId, cancellationToken);
var priceChangedEvent = new ProductPriceChangedEvent(command.ProductId, command.Price);
aggregate.Handle(priceChangedEvent);
await _repository.SaveAggregateEvent(aggregate, priceChangedEvent, cancellationToken);
await _mediator.Publish(priceChangedEvent, cancellationToken);
}
public async Task QueryChangePrice()
{
var(_, repository, mediator) = TestSetup.Init();
var handler = new ProductCommandHandlers(repository, mediator);
var id = Guid.NewGuid();
const int price1 = 500;
const int price2 = 600;
const int price3 = 700;
var productCreateCommand = new ProductCreateCommand
{
Id = id,
Name = "mock name",
Price = price1
};
await handler.Handle(productCreateCommand, CancellationToken.None);
var priceChange1 = new ProductChangePriceCommand
{
ProductId = id,
Price = price2
};
await handler.Handle(priceChange1, CancellationToken.None);
var priceChange2 = new ProductChangePriceCommand
{
ProductId = id,
Price = price3
};
await handler.Handle(priceChange2, CancellationToken.None);
var events = await repository.GetEventsOfType <ProductPriceChangedEvent>(id, CancellationToken.None);
var changedEvents = events as ProductPriceChangedEvent[] ?? events.ToArray();
Assert.Equal(2, changedEvents.Count());
Assert.Equal(price2, changedEvents.ElementAt(0).Price);
Assert.Equal(price3, changedEvents.ElementAt(1).Price);
}
