Executable Query Test of a Rest call

RestCallTests.cs

using System;
using System.Net.Http;
using System.Threading.Tasks;
using ApprovalTests;
using ApprovalTests.Reporters;
using ApprovalUtilities.Persistence;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using ObjectApproval;

/**
 * This code requires the following Nuget Packages
 * ApprovalTests
 * ObjectApprovals
 * Microsoft HTTP Client libraries
 **/

namespace AdvancedUnitTesting
{
	[TestClass]
	[UseReporter(typeof (DiffReporter))]
	public class RestCallTests
	{
		[TestMethod]
		public void TestGoogleQuery()
		{
			Approvals.Verify(new GoogleQuery("lolcats"));
		}
	}


	public class GoogleQuery : RestQuery<GoogleQueryResults>
	{
		private readonly string searchTerm;

		public GoogleQuery(String searchTerm)
		{
			this.searchTerm = searchTerm;
		}

		public override string GetQuery()
		{
			return string.Format("?v=1.0&q={0}", searchTerm);
		}

		public override string GetBaseAddress()
		{
			return "http://ajax.googleapis.com/ajax/services/search/web";
		}

		public override GoogleQueryResults Load()
		{
			return new GoogleQueryResults(GetResponse().Result);
		}
	}

	public class GoogleQueryResults
	{
		public GoogleQueryResults(HttpResponseMessage result)
		{
			//do extraction stuff
		}
	}

	public abstract class RestQuery<T> : IExecutableQuery, ILoader<T>
	{
		public abstract string GetQuery();

		public abstract string GetBaseAddress();

		public string ExecuteQuery(string query)
		{
			var json = ExecuteAsync(query).Result.Content.ReadAsStringAsync().Result;
			return JsonPrettyPrint.FormatJson(json);
		}

		public Task<HttpResponseMessage> ExecuteAsync(string requestUri)
		{
			var httpClient = new HttpClient();
			httpClient.BaseAddress = new Uri(GetBaseAddress());
			return httpClient.GetAsync(requestUri);
		}

		public Task<HttpResponseMessage> GetResponse()
		{
			return ExecuteAsync(GetQuery());
		}

		public abstract T Load();
	}
}