我有一个事件如下
namespace MyProject
{
public class MyEvent
{
public MyEvent(int favoriteNumber)
{
this.FavoriteNumber = favoriteNumber;
}
public int FavoriteNumber { get; private set; }
}
}
我有一个引发此事件的方法。
using Caliburn.Micro;
//please assume the rest like initializing etc.
namespace MyProject
{
private IEventAggregator eventAggregator;
public void Navigate()
{
eventAggregator.PublishOnUIThreadAsync(new MyEvent(5));
}
}
如果我只使用 PublishOnUIThread,下面的代码(在单元测试中)工作正常。
eventAggregatorMock.Verify(item => item.Publish(It.IsAny<MyEvent>(), Execute.OnUIThread), Times.Once);
但是我如何检查相同的异步版本?
eventAggregatorMock.Verify(item => item.Publish(It.IsAny<MyEvent>(), Execute.OnUIThreadAsync), Times.Once);
验证异步方法时遇到问题。假设private Mock<IEventAggregator> eventAggregatorMock;
。该部分Execute.OnUIThreadAsync
给出错误 'Task Execute.OnUIThreadAsync' has the wrong return type
.
我也尝试过
eventAggregatorMock.Verify(item => item.Publish(It.IsAny<MyEvent>(), action => Execute.OnUIThreadAsync(action)), Times.Once);
但是说,System.NotSupportedException: Unsupported expression: action => action.OnUIThreadAsync()
提前致谢。
最佳答案
IEvenAggregator.Publish
定义为
void Publish(object message, Action<System.Action> marshal);
因此,您需要提供正确的表达式来匹配该定义。
eventAggregatorMock.Verify(_ => _.Publish(It.IsAny<MyEvent>(),
It.IsAny<Action<System.Action>>()), Times.Once);
此外,PublishOnUIThreadAsync
扩展方法返回一个任务
/// <summary>
/// Publishes a message on the UI thread asynchrone.
/// </summary>
/// <param name="eventAggregator">The event aggregator.</param>
/// <param name="message">The message instance.</param>
public static Task PublishOnUIThreadAsync(this IEventAggregator eventAggregator, object message) {
Task task = null;
eventAggregator.Publish(message, action => task = action.OnUIThreadAsync());
return task;
}
所以应该等待
public async Task Navigate() {
await eventAggregator.PublishOnUIThreadAsync(new MyEvent(5));
}
关于.net - Caliburn EventAggregator moq 验证 PublishOnUIThreadAsync 异步方法,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45954868/