Question

让我的头脑全力以赴尝试moq下面的界面。 GetOrSet让我绊倒了。该服务来自here

public interface ICacheService
{
    T GetOrSet<T>(string cackeKey, int expiryInMinutes, Func<T> getItemCallback) where T : class;
}

public class CacheService : ICacheService
{
    public T GetOrSet<T>(string cacheKey, int expiryInMinutes, Func<T> getItemCallback) where T : class
    {

        T item = MemoryCache.Default.Get(cacheKey) as T;
        if (item == null)
        {
            item = getItemCallback();
            MemoryCache.Default.Add(cacheKey, item, DateTime.Now.AddMinutes(expiryInMinutes));
        }
        return item;
    }
}

代码示例：

var result = _cacheService.GetOrSet(
        cacheKey,
        cacheExpiry,
      () => this.GetRoutes(routeType));
return result.Select(x => new Route(x));

Answer 1

基本设置可能如下所示：

public static ICacheService GetMockCacheService<T>() where T : class
{
     var mock = new Mock<ICacheService>();

     mock.Setup(service => service.GetOrSet(It.IsAny<string>(), It.IsAny<int>(), It.IsAny<Func<T>>()))
         .Returns(default(T));

     return mock.Object;
}

使用通用方法为实现中所需的任何类型构建模拟。

模拟Lambda无参数表达式

1 个答案: