var client = new Mock<IElasticClient>();

​

var searchResponse = new Mock<ISearchResponse<object>>();

​

var aggregations = new AggregateDictionary(new Dictionary<string, IAggregate> {

    ["Name"] = new BucketAggregate

    {

        Items = new List<KeyedBucket<object>>

        {

            new Nest.KeyedBucket<object>(new Dictionary<string, IAggregate>())

            {

                Key = "XYZ school",

                KeyAsString = null,

                DocCount = 5

            }

        }.AsReadOnly()

    }

});

​

searchResponse.Setup(s => s.Aggregations).Returns(aggregations);

​

client.Setup(c => c.Search<object>(It.IsAny<Func<SearchDescriptor<object>, ISearchRequest>>()))

    .Returns(searchResponse.Object);

​

var response = client.Object.Search<object>(s => s);

​

var terms = response.Aggregations.Terms("Name");