public async Task Handler_sends_no_command_when_order_already_exists()
{
// Arrange
var fakeGuid = Guid.NewGuid();
var fakeOrderCmd = new IdentifiedCommand <CreateOrderCommand, bool>(FakeOrderRequest(), fakeGuid);
_requestManager.Setup(x => x.ExistAsync(It.IsAny <Guid>()))
.Returns(Task.FromResult(true));
_mediator.Setup(x => x.Send(It.IsAny <IRequest <bool> >(), default(System.Threading.CancellationToken)))
.Returns(Task.FromResult(true));
//Act
var handler = new IdentifierCommandHandler <CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object);
var result = await handler.Handle(fakeOrderCmd);
//Assert
Assert.False(result);
_mediator.Verify(x => x.Send(It.IsAny <IRequest <bool> >(), default(System.Threading.CancellationToken)), Times.Never());
}
public async Task Handler_sends_command_when_order_no_exists()
{
// Arrange
var fakeGuid = Guid.NewGuid();
var fakeOrderCmd = new IdentifiedCommand <CreateOrderCommand, bool>(FakeOrderRequest(), fakeGuid);
_requestManager.Setup(x => x.ExistAsync(It.IsAny <Guid>()))
.Returns(Task.FromResult(false));
_mediator.Setup(x => x.SendAsync(It.IsAny <IAsyncRequest <bool> >()))
.Returns(Task.FromResult(true));
//Act
var handler = new IdentifierCommandHandler <CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object);
var result = await handler.Handle(fakeOrderCmd);
//Assert
Assert.True(result);
_mediator.Verify(x => x.SendAsync(It.IsAny <IAsyncRequest <bool> >()), Times.Once());
}
public async Task Handler_sends_no_command_when_order_exists()
{
//构造命令
var fakeGuid = Guid.NewGuid();
var fakeOrderCmd = new IdentifiedCommand <CreateOrderCommand, bool>(this.FakeOrderRequest(), fakeGuid);
//构造命令处理
//模拟逻辑：订单存在，不处理命令（保证命令消费的幂等性）。
this._requestManager
.Setup(x => x.ExistAsync(It.IsAny <Guid>()))
.Returns(Task.FromResult(true));
this._mediator
.Setup(x => x.Send(It.IsAny <IRequest <bool> >(), CancellationToken.None))
.Returns(Task.FromResult(true));
var handler = new IdentifierCommandHandler <CreateOrderCommand, bool>(this._mediator.Object, this._requestManager.Object);
//执行命令
var result = await handler.Handle(fakeOrderCmd);
Assert.False(result);
this._mediator.Verify(m => m.Send(It.IsAny <IRequest <bool> >(), CancellationToken.None), Times.Never());
}