octokit.net/Octokit.Tests/Clients/GistCommentsClientTests.cs

using System;
using System.Threading.Tasks;
using NSubstitute;
using Octokit;
using Octokit.Tests.Helpers;
using Xunit;

public class GistCommentsClientTests
{
    public class TheCtor
    {
        [Fact]
        public void EnsuresArgument()
        {
            Assert.Throws<ArgumentNullException>(() => new GistCommentsClient(null));
        }
    }

    public class TheGetMethod
    {
        [Fact]
        public async Task RequestsCorrectUrl()
        {
            var connection = Substitute.For<IApiConnection>();
            var client = new GistCommentsClient(connection);

            await client.Get("24", 1337);

            connection.Received().Get<GistComment>(Arg.Is<Uri>(u => u.ToString() == "gists/24/comments/1337"), null);
        }
    }

    public class TheGetForGistMethod
    {
        [Fact]
        public async Task RequestsCorrectUrl()
        {
            var connection = Substitute.For<IApiConnection>();
            var client = new GistCommentsClient(connection);

            await client.GetAllForGist("24");

            connection.Received().GetAll<GistComment>(Arg.Is<Uri>(u => u.ToString() == "gists/24/comments"));
        }
    }

    public class TheCreateMethod
    {
        [Fact]
        public async Task EnsuresNonNullArguments()
        {
            var client = new GistCommentsClient(Substitute.For<IApiConnection>());

            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create("24", null));
            await Assert.ThrowsAsync<ArgumentException>(() => client.Create("24", ""));
        }

        [Fact]
        public async Task PostsToCorrectUrl()
        {
            var comment = "This is a comment.";
            var connection = Substitute.For<IApiConnection>();
            var client = new GistCommentsClient(connection);

            await client.Create("24", comment);

            connection.Received().Post<GistComment>(Arg.Is<Uri>(u => u.ToString() == "gists/24/comments"), Arg.Is<BodyWrapper>(x => x.Body == comment));
        }
    }

    public class TheUpdateMethod
    {
        [Fact]
        public async Task EnsuresNonNullArguments()
        {
            var client = new GistCommentsClient(Substitute.For<IApiConnection>());

            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Update("24", 1337, null));
            await Assert.ThrowsAsync<ArgumentException>(() => client.Update("24", 1337, ""));
        }

        [Fact]
        public async Task PostsToCorrectUrl()
        {
            var comment = "This is a comment.";
            var connection = Substitute.For<IApiConnection>();
            var client = new GistCommentsClient(connection);

            await client.Update("24", 1337, comment);

            connection.Received().Patch<GistComment>(Arg.Is<Uri>(u => u.ToString() == "gists/24/comments/1337"), Arg.Is<BodyWrapper>(x => x.Body == comment));
        }
    }

    public class TheDeleteMethod
    {
        [Fact]
        public async Task PostsToCorrectUrl()
        {
            var connection = Substitute.For<IApiConnection>();
            var client = new GistCommentsClient(connection);

            await client.Delete("24", 1337);

            connection.Received().Delete(Arg.Is<Uri>(u => u.ToString() == "gists/24/comments/1337"));
        }
    }
}