Tests.QueryDSLTests.TestTopChildrenQuery C# (CSharp) Method

		public void TestTopChildrenQuery()
		{
			var index = "index_test_parent_child_type123_with_top_child_query_query";
//		    client.DeleteIndex(index);

			#region preparing mapping

			var parentType = new TypeSetting("blog");
			parentType.AddStringField("title");
			client.CreateIndex(index);
			var op = client.PutMapping(index, parentType);

			Assert.AreEqual(true, op.Acknowledged);

			var childType = new TypeSetting("comment", parentType);
			childType.AddStringField("comments");
		    childType.AddStringField("author").Analyzer = "keyword";

			op = client.PutMapping(index, childType);
			Assert.AreEqual(true, op.Acknowledged);

			var mapping = client.GetMapping(index, "comment");

			Assert.True(mapping.IndexOf("_parent") > 0);

			client.Refresh();

			#endregion


			#region preparing test data

			Dictionary<string, object> dict = new Dictionary<string, object>();
			dict["title"] = "this is the blog title";
			client.Index(index, "blog", "1", dict);

			dict = new Dictionary<string, object>();
			dict["title"] = "hello.elasticsearch";
			client.Index(index, "blog", "2", dict);

			//child docs
			dict = new Dictionary<string, object>();
			dict["title"] = "awful,that's bullshit";
			dict["author"] = "lol";
			client.Index(index, "comment", "c1", dict, "1");

			dict = new Dictionary<string, object>();
			dict["title"] = "hey,lol,i can't agree more!";
			dict["author"] = "laday-guagua";
			client.Index(index, "comment", "c2", dict, "1");

			dict = new Dictionary<string, object>();
			dict["title"] = "it rocks";
			dict["author"] = "laday-guagua";
			client.Index(index, "comment", "c3", dict, "2");
			#endregion

			client.Refresh();

			var q = new ConstantScoreQuery(new TopChildrenQuery("comment", new TermQuery("author", "lol")));
			var result = client.Search(index, "blog" , q, 0, 5);

			Assert.AreEqual(1, result.GetTotalCount());
			Assert.AreEqual("1", result.GetHitIds()[0]);


			q = new ConstantScoreQuery(new TopChildrenQuery("comment", new TermQuery("author", "laday-guagua")));
			result = client.Search(index, "blog" , q, 0, 5);

			Assert.AreEqual(2, result.GetTotalCount());

			client.DeleteIndex(index);
		}