ConfigurationTest.cs

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using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Tgstation.Server.Api.Models;
using Tgstation.Server.Client;
using Tgstation.Server.Client.Components;

namespace Tgstation.Server.Tests.Instance
{
    sealed class ConfigurationTest
    {
        readonly IConfigurationClient configurationClient;
        readonly Api.Models.Instance instance;

        public ConfigurationTest(IConfigurationClient configurationClient, Api.Models.Instance instance)
        {
            this.configurationClient = configurationClient ?? throw new ArgumentNullException(nameof(configurationClient));
            this.instance = instance ?? throw new ArgumentNullException(nameof(instance));
        }

        bool FileExists(ConfigurationFile file)
        {
            var tmp = (file.Path?.StartsWith('/') ?? false) ? '.' + file.Path : file.Path;
            var path = Path.Combine(instance.Path, "Configuration", tmp);
            return File.Exists(path);
        }

        async Task TestDeleteDirectory(CancellationToken cancellationToken)
        {
            //try to delete non-existent
            var TestDir = new ConfigurationFile
            {
                Path = "/TestDeleteDir"
            };

            await configurationClient.DeleteEmptyDirectory(TestDir, cancellationToken).ConfigureAwait(false);

            //try to delete non-empty
            var file = await configurationClient.Write(new ConfigurationFile
            {
                Content = Encoding.UTF8.GetBytes("Hello world!"),
                Path = TestDir.Path + "/test.txt"
            }, cancellationToken).ConfigureAwait(false);

            Assert.IsTrue(FileExists(file));

            await Assert.ThrowsExceptionAsync<ConflictException>(() => configurationClient.DeleteEmptyDirectory(TestDir, cancellationToken)).ConfigureAwait(false);

            file.Content = null;
            await configurationClient.Write(file, cancellationToken).ConfigureAwait(false);

            await configurationClient.DeleteEmptyDirectory(TestDir, cancellationToken).ConfigureAwait(false);
        }

        public async Task Run(CancellationToken cancellationToken)
        {
            await TestDeleteDirectory(cancellationToken).ConfigureAwait(false);
        }
    }
}