public async Task FindByPostCode_Returns_Empty_List_If_No_Restaurants_Found()
        {
            _mockHandler.Protected()
            .Setup <Task <HttpResponseMessage> >(
                "SendAsync",
                ItExpr.Is <HttpRequestMessage>(r =>
                                               r.Method == HttpMethod.Get),
                ItExpr.IsAny <CancellationToken>())
            .ReturnsAsync(new HttpResponseMessage
            {
                StatusCode = HttpStatusCode.OK,
                Content    = new StringContent("{'Restaurants':[]}"),
            });
            var relUrl = new RelativeUrlsOptions {
                RestaurantsByPostCode = "testurl/"
            };

            _mockOptions.Setup(x => x.Value).Returns(relUrl);

            using var client   = new HttpClient(_mockHandler.Object);
            client.BaseAddress = new Uri("http://testbaseurl/");
            var sut    = new RestaurantFinder(client, _mockOptions.Object);
            var result = await sut.FindByPostCodeAsync("SE19");

            Assert.IsTrue(!result.Any());
        }
        public async Task FindByPostCode_Returns_IEnumerable_Of_Type_Restaurant()
        {
            _mockHandler.Protected()
            .Setup <Task <HttpResponseMessage> >(
                "SendAsync",
                ItExpr.Is <HttpRequestMessage>(r =>
                                               r.Method == HttpMethod.Get),
                ItExpr.IsAny <CancellationToken>())
            .ReturnsAsync(new HttpResponseMessage
            {
                StatusCode = HttpStatusCode.OK,
                Content    = new StringContent("{'Restaurants':[{'Name': 'EZee Pizza','RatingStars': 5.0,'CuisineTypes': []}]}"),
            });
            var relUrl = new RelativeUrlsOptions {
                RestaurantsByPostCode = "testurl/"
            };

            _mockOptions.Setup(x => x.Value).Returns(relUrl);

            using var client   = new HttpClient(_mockHandler.Object);
            client.BaseAddress = new Uri("http://testbaseurl/");
            var sut    = new RestaurantFinder(client, _mockOptions.Object);
            var result = await sut.FindByPostCodeAsync("SE19");

            Assert.IsInstanceOfType(result, typeof(IEnumerable <Restaurant>));
        }