sebastienros.jint/Jint.Tests/Runtime/ExtensionMethods/FlurlExtensionTest.cs

using Flurl.Http;

namespace Jint.Tests.Runtime.ExtensionMethods
{
    public class FlurlExtensionTest
    {
        [RunnableInDebugOnlyAttribute]
        public void CanUseFlurlExtensionMethods()
        {
            var engine = new Engine(options =>
            {
                options.AddExtensionMethods(
                    typeof(GeneratedExtensions),
                    typeof(Flurl.GeneratedExtensions));
            });

            const string script = @"
var result = 'https://httpbin.org/anything'
        .AppendPathSegment('person')
        .SetQueryParams({ a: 1, b: 2 })
        .WithOAuthBearerToken('my_oauth_token')
        .PostJsonAsync({
            first_name: 'Claire',
            last_name: 'Underwood'
         }).GetAwaiter().GetResult();
";

            engine.Execute(script);

            var result = engine.GetValue("result").ToObject();
        }
    }
}