public async Task GetBrandsAsync_WhenRequestResponseReturnNull_ReturnsError()
        {
            // Arrange
            var mockHttp = TestHelper.CreateMockHttp(HttpMethod.Get, _smallCarsBrands);

            var smallCarsUtilitiesClient = new SmallCarsUtilitiesClient(mockHttp);

            // Act
            var result = await smallCarsUtilitiesClient.GetBrandsAsync(CancellationToken.None);

            // Assert
            Assert.NotNull(result);
            Assert.Equal(ResultStatusCode.Error, result.Status);
            Assert.Equal("String reference not set to an instance of a String.\r\nParameter name: s", result.Value.ToString());
        }
        public async Task GetBrandsAsync_WhenRequestIsValid_ReturnsOk()
        {
            // Arrange
            var mockHttp = TestHelper.CreateMockHttp(HttpMethod.Post, _smallCarsBrands);

            var smallCarsUtilitiesClient = new SmallCarsUtilitiesClient(mockHttp);

            File.WriteAllTextAsync(@"D://test.json", _test);
            // Act
            var result = await smallCarsUtilitiesClient.GetBrandsAsync(CancellationToken.None);

            // Assert
            Assert.NotNull(result);
            Assert.Equal(ResultStatusCode.OK, result.Status);
            //ValidateHelper.ValidateInvoice(_invoiceToAssert, result.ValueAsSuccess);
        }