octokit.net/Octokit.Tests/Models/NewReferenceTests.cs

using System;
using Octokit;
using Xunit;

public class NewReferenceTests
{
    public class TheCtor
    {
        [Fact]
        public void EnforcesRefsPrefix()
        {
            var create = new NewReference("heads/develop", "sha");

            Assert.Equal("refs/heads/develop", create.Ref);
        }

        [Fact]
        public void ThrowsExceptionIfRefHasLessThanTwoSlashes()
        {
            Assert.Throws<FormatException>(() => new NewReference("refs/develop", "sha"));
        }
    }
}