public void GetCookies_ThrowsOnNull()
 {
     Assert.ThrowsArgumentNull(
         () => HttpRequestHeadersExtensions.GetCookies(null),
         "headers"
         );
 }
 public void GetCookiesByName_ThrowsOnNullHeaders()
 {
     Assert.ThrowsArgumentNull(
         () => HttpRequestHeadersExtensions.GetCookies(null, "empty"),
         "headers"
         );
 }
        public void GetCookiesByName_ThrowsOnNullName()
        {
            HttpRequestHeaders headers = CreateHttpRequestHeaders();

            Assert.ThrowsArgumentNull(
                () => HttpRequestHeadersExtensions.GetCookies(headers, null),
                "name"
                );
        }