fm.Extensions.Testing.DependencyInjection 3.0.0

Provides a base class for tests based on Microsoft.Extensions.DependencyInjection. Use common Startup.cs patterns like ConfigureServices(...) and Configure(...) to setup your tests.

Commonly used types:
ServiceTestsBase

Example:
[TestClass]
public class DatabaseCleanupBackgroundServiceTests : ServiceTestsBase
{
   protected override void ConfigureServices([NotNull] IServiceCollection services)
   {
       base.ConfigureServices(services);

       services.AddSingleton<DatabaseCleanupBackgroundService>();
       services.AddSingleton(sp => A.Fake<IDatabaseCleanupService>());
       services.AddSingleton<ILogRecorder, LogRecorderProvider>();
   }

   protected override void Configure([NotNull] IServiceProvider services, [NotNull] ILoggerFactory loggerFactory)
   {
       base.Configure(services, loggerFactory);
       loggerFactory.AddLogRecorder(services);
   }

   [TestMethod]
   public void CleanupSuggestedFailTest()
   {
       IDatabaseCleanupService databaseCleanupService = this.GetRequiredService<IDatabaseCleanupService>();
       A.CallTo(() => databaseCleanupService.RemoveObsoleteProjectsAsync(A<CancellationToken>.Ignored)).Throws(new InvalidOperationException(nameof(this.CleanupSuggestedFailTest)));

       DatabaseCleanupBackgroundService service = this.GetRequiredService<DatabaseCleanupBackgroundService>();
       service.CleanupSuggested();

       service.WaitAll();

       ILogRecorder logRecorder = this.GetRequiredService<ILogRecorder>();
       logRecorder.Messages.Single(m => m.LogLevel == LogLevel.Error).Exception.ShouldBeOfType<InvalidOperationException>().Message.ShouldBe(nameof(this.CleanupSuggestedFailTest));
   }
}