MongoDB.DriverUnitTests.MongoCollectionTests.TestGeoHaystackSearch C# (CSharp) Метод

        public void TestGeoHaystackSearch()
        {
            using (_database.RequestStart())
            {
                var instance = _server.RequestConnection.ServerInstance;
                if (instance.InstanceType != MongoServerInstanceType.ShardRouter)
                {
                    if (_collection.Exists()) { _collection.Drop(); }
                    _collection.Insert(new Place { Location = new[] { 34.2, 33.3 }, Type = "restaurant" });
                    _collection.Insert(new Place { Location = new[] { 34.2, 37.3 }, Type = "restaurant" });
                    _collection.Insert(new Place { Location = new[] { 59.1, 87.2 }, Type = "office" });
                    _collection.CreateIndex(IndexKeys.GeoSpatialHaystack("Location", "Type"), IndexOptions.SetBucketSize(1));

                    var options = GeoHaystackSearchOptions
                        .SetLimit(30)
                        .SetMaxDistance(6)
                        .SetQuery("Type", "restaurant");
                    var result = _collection.GeoHaystackSearchAs<Place>(33, 33, options);
                    Assert.IsTrue(result.Ok);
                    Assert.IsTrue(result.Stats.Duration >= TimeSpan.Zero);
                    Assert.AreEqual(2, result.Stats.BTreeMatches);
                    Assert.AreEqual(2, result.Stats.NumberOfHits);
                    Assert.AreEqual(34.2, result.Hits[0].Document.Location[0]);
                    Assert.AreEqual(33.3, result.Hits[0].Document.Location[1]);
                    Assert.AreEqual("restaurant", result.Hits[0].Document.Type);
                    Assert.AreEqual(34.2, result.Hits[1].Document.Location[0]);
                    Assert.AreEqual(37.3, result.Hits[1].Document.Location[1]);
                    Assert.AreEqual("restaurant", result.Hits[1].Document.Type);
                }
            }
        }