expose-myit/Tests/UnitTestAppSettingsController.cs

using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.DependencyInjection;
using Serilog;
using System.Net;

namespace Expose.MyIT.Tests;

[TestClass]
public class UnitTestAppSettingsController
{

    private static ILogger? _Logger;
    private static string? _ControllerName;
    private static TestContext? _TestContext;
    private static WebApplicationFactory<Server.Program>? _WebApplicationFactory;

    [ClassInitialize]
    public static void ClassInitAsync(TestContext testContext)
    {
        _TestContext = testContext;
        _Logger = Log.ForContext<UnitTestAppSettingsController>();
        _WebApplicationFactory = new WebApplicationFactory<Server.Program>();
        _ControllerName = nameof(Server.Controllers.AppSettingsController)[..^10];
    }

    [TestMethod]
    public void TestControllerName()
    {
        if (_Logger is null)
            throw new NullReferenceException(nameof(_Logger));
        if (_ControllerName is null)
            throw new NullReferenceException(nameof(_ControllerName));
        if (_WebApplicationFactory is null)
            throw new NullReferenceException(nameof(_WebApplicationFactory));
        _Logger.Information("Starting Web Application");
        Assert.AreEqual(Shared.Models.Stateless.Methods.IAppSettingsController.GetRouteName(), _ControllerName);
        _Logger.Information($"{_TestContext?.TestName} completed");
    }

    [TestMethod]
    public async Task Get_ShouldReturn()
    {
        if (_Logger is null)
            throw new NullReferenceException(nameof(_Logger));
        if (_ControllerName is null)
            throw new NullReferenceException(nameof(_ControllerName));
        if (_WebApplicationFactory is null)
            throw new NullReferenceException(nameof(_WebApplicationFactory));
        HttpClient httpClient = _WebApplicationFactory.CreateClient();
        _Logger.Information("Starting Web Application");
        IServiceProvider serviceProvider = _WebApplicationFactory.Services.CreateScope().ServiceProvider;
        Server.Models.AppSettings appSettings = serviceProvider.GetRequiredService<Server.Models.AppSettings>();
        Assert.IsNotNull(appSettings);
        if (appSettings.IsDevelopment)
        {
            HttpResponseMessage httpResponseMessage = await httpClient.GetAsync($"api/{_ControllerName}/");
            Assert.AreEqual(HttpStatusCode.OK, httpResponseMessage.StatusCode);
            Assert.AreEqual("application/json; charset=utf-8", httpResponseMessage.Content.Headers.ContentType?.ToString());
            string result = await httpResponseMessage.Content.ReadAsStringAsync();
            Assert.IsTrue(result.Contains(appSettings.Company));
            httpClient.Dispose();
        }
        _Logger.Information($"{_TestContext?.TestName} completed");
    }

}