Methods using HttpClient for Integration style testing

TestHttpClient.cs

public (HttpStatusCode Status, string Content) Get(string url)
{
    HttpResponseMessage response;
    string content = string.Empty;

    using (var client = new HttpClient())
    {
        response = client.GetAsync(url).Result;
    }

    if (response != null)
    {
        content = response.Content.ReadAsStringAsync().Result;
    }

    return (response.StatusCode, content);
}

public (HttpStatusCode status, dynamic responseContent) PostXml(string url, string xml)
{
    dynamic responseContent = null;
    HttpResponseMessage response = null;

    var httpContent = new StringContent(xml,  Encoding.UTF8, "application/xml");

    using (var client = new HttpClient())
    {
        response = client.PostAsync(url, httpContent).Result;
    }

    if (response != null)
    {
        var content = response.Content.ReadAsStringAsync().Result;

        responseContent = XElement.Load(content);
    }

    return (response.StatusCode, responseContent);
}

public (HttpStatusCode status, dynamic responseContent) PostJson(string url, object json)
{
    dynamic responseContent = null;
    HttpResponseMessage response = null;

    var requestContentJson = JsonConvert.SerializeObject(json);
    var requestContentBytes = Encoding.UTF8.GetBytes(requestContentJson);

    var requestPostContent = new ByteArrayContent(requestContentBytes);
    requestPostContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

    using (var client = new HttpClient())
    {
        response = client.PostAsync(url, requestPostContent).Result;
    }

    if (response != null)
    {
        var content = response.Content.ReadAsStringAsync().Result;

        responseContent = JsonConvert.DeserializeObject(content);
    }

    return (response.StatusCode, responseContent);
}