I have a custom Nancy Bootstrapper which uses StructureMapNancyBootstrapper but the issue is the same regardless of container.
public class CustomNancyBootstrapper : StructureMapNancyBootstrapper
{
protected override void RequestStartup(IContainer container, IPipelines pipelines, NancyContext context)
{
var auth = container.GetInstance<ICustomAuth>();
auth.Authenticate(context);
}
}
I want to write a test to assert that Authenticate is called with the context... something like this...
[Test]
public void RequestStartup_Calls_CustomAuth_Authenticate_WithContext()
{
// set up
var mockAuthentication = new Mock<ICustomAuth>();
var mockContainer = new Mock<IContainer>();
var mockPipelines = new Mock<IPipelines>();
var context = new NancyContext();
mockContainer.Setup(x => x.GetInstance<ICustomAuth>()).Returns(mockAuthentication.Object);
// exercise
_bootstrapper.RequestStartup(_mockContainer.Object, _mockPipelines.Object, context);
// verify
mockAuthentication.Verify(x => x.Authenticate(context), Times.Once);
}
The problem is that I can't call RequestStartup because it's protected as defined in NancyBootstrapperBase.
protected virtual void RequestStartup(TContainer container, IPipelines pipelines, NancyContext context);
Is there a "proper"/"offical" Nancy way to do this without creating another derived class and exposing the methods as that just seems like a hack?
Thanks
I guess you can "fake" the request by using Browser from Nancy.Testing:
var browser = new Browser(new CustomNancyBootstrapper());
var response = browser.Get("/whatever");
There is a good set of articles about testing NancyFx application:
http://www.marcusoft.net/2013/01/NancyTesting1.html
Turns out Nancy offers a IRequetStartup interface so you can take the code out of the custom bootstrapper and do something like this...
public class MyRequestStart : IRequestStartup
{
private readonly ICustomAuth _customAuthentication;
public MyRequestStart(ICustomAuth customAuthentication)
{
if (customAuthentication == null)
{
throw new ArgumentNullException(nameof(customAuthentication));
}
_customAuthentication = customAuthentication;
}
public void Initialize(IPipelines pipelines, NancyContext context)
{
_customAuthentication.Authenticate(context);
}
}
and the test is easy and concise
[Test]
public void When_Initialize_Calls_CustomAuth_Authenticate_WithContext()
{
// set up
var mockAuth = new Mock<ICustomAuth>();
var requestStartup = new MyRequestStart(mockAuth.Object);
var mockPipeline = new Mock<IPipelines>();
var context = new NancyContext();
// exercise
requestStartup.Initialize(mockPipeline.Object, context);
// verify
mockAuth.Verify(x => x.Authenticate(context), Times.Once);
}
https://github.com/NancyFx/Nancy/wiki/The-Application-Before%2C-After-and-OnError-pipelines#implementing-interfaces
Related
I am working with ABP and I used the basic setup which is generated by the abp cli with EF Core and SQL Server.
Now, I would like to replace SQLite (the generated one), with a LocalDb database, since I using spatial data for unit- and integration testing.
However, I am not sure how to make the replacement. I have identified the file which initialize the SQLite, and it is reseeded after each unittest.
When switching to LocalDb, I will not flush / seed database, and I think I have solved that out.
This is the generated file ...\ABPProject\aspnet-core\ABPProject.EntityFrameworkCore.Tests\EntityFrameworkCore\ABPProjectEntityFrameworkCoreTestModule.cs that uses SQLite, can you please give me an example / ideas how to use LocalDb instead of SQLite?
[DependsOn(
typeof(ABPProjectEntityFrameworkCoreModule),
typeof(ABPProjectTestBaseModule),
typeof(AbpEntityFrameworkCoreSqliteModule)
)]
public class ABPProjectEntityFrameworkCoreTestModule : AbpModule
{
private SqliteConnection _sqliteConnection;
public override void ConfigureServices(ServiceConfigurationContext context)
{
ConfigureInMemorySqlite(context.Services);
}
private void ConfigureInMemorySqlite(IServiceCollection services)
{
_sqliteConnection = CreateDatabaseAndGetConnection();
services.Configure<AbpDbContextOptions>(options =>
{
options.Configure(context =>
{
context.DbContextOptions.UseSqlite(_sqliteConnection);
});
});
}
public override void OnApplicationShutdown(ApplicationShutdownContext context)
{
_sqliteConnection.Dispose();
}
private static SqliteConnection CreateDatabaseAndGetConnection()
{
var connection = new SqliteConnection("Data Source=:memory:");
connection.Open();
var options = new DbContextOptionsBuilder<ABPProjectDbContext>()
.UseSqlite(connection)
.Options;
using (var context = new ABPProjectDbContext(options))
{
context.GetService<IRelationalDatabaseCreator>().CreateTables();
}
return connection;
}
}
This was really simple. Just do this:
namespace ABPProject.EntityFrameworkCore;
[DependsOn(
typeof(ABPProjectEntityFrameworkCoreModule),
typeof(ABPProjectTestBaseModule),
typeof(AbpEntityFrameworkCoreSqliteModule)
)]
public class ABPProjectEntityFrameworkCoreTestModule : AbpModule
{
private SqliteConnection _sqliteConnection;
public override void ConfigureServices(ServiceConfigurationContext context)
{
//ConfigureInMemorySqlite(context.Services);
ConfigureLocalDb(context.Services);
}
private void ConfigureInMemorySqlite(IServiceCollection services)
{
_sqliteConnection = CreateDatabaseAndGetConnection_Sqlite();
services.Configure<AbpDbContextOptions>(options =>
{
options.Configure(context =>
{
context.DbContextOptions.UseSqlite(_sqliteConnection);
});
});
}
private void ConfigureLocalDb(IServiceCollection services)
{
services.Configure<AbpDbContextOptions>(options =>
{
options.Configure(context =>
{
context.DbContextOptions.UseSqlServer("Server=(LocalDb)\\MSSQLLocalDB;Database=ABPProject_Unittest;Trusted_Connection=True;TrustServerCertificate=True");
});
});
}
public override void OnApplicationShutdown(ApplicationShutdownContext context)
{
if (_sqliteConnection is not null)
{
_sqliteConnection.Dispose();
}
}
private static SqliteConnection CreateDatabaseAndGetConnection_Sqlite()
{
var connection = new SqliteConnection("Data Source=:memory:");
connection.Open();
var options = new DbContextOptionsBuilder<ABPProjectDbContext>()
.UseSqlite(connection, x => x.UseNetTopologySuite())
.Options;
using (var context = new ABPProjectDbContext(options))
{
context.GetService<IRelationalDatabaseCreator>().CreateTables();
}
return connection;
}
}
Then you need to disable re-seeding each time between test in aspnet-core\test\ABPProject.TestBase\ABPProjectTestBaseModule.cs
public override void OnApplicationInitialization(ApplicationInitializationContext context)
{
//SeedTestData(context);
}
How to reset the database when starting all tests? Use XUnit collections, which enable setup before all tests are starting and teardown after all tests are executed.
You can read more about it here https://xunit.net/docs/shared-context but basically, you create a new class (NOTE! You need to place this file in each test project, since the class can not be shared between different test projects):
public class DatabaseFixture : ABPProjectTestBase<ABPProjectEntityFrameworkCoreTestModule>, IAsyncLifetime
{
// ... create your shared vars here
public DatabaseFixture()
{
}
public async Task InitializeAsync()
{
IDbContextProvider<ABPProjectDbContext> _dbContextProvider = GetRequiredService<IDbContextProvider<ABPProjectDbContext>>();
IUnitOfWorkManager _unitOfWorkManager = GetRequiredService<IUnitOfWorkManager>();
IDataSeeder _dataSeeder = GetRequiredService<IDataSeeder>();
using (var uow = _unitOfWorkManager.Begin())
{
var context = await _dbContextProvider.GetDbContextAsync();
var tableNames = context.Model.GetEntityTypes()
.Where(t => t.GetTableName().StartsWith("App"))
.Select(t => t.GetTableName())
.Distinct()
.ToList();
// Disable constraints
foreach (var tableName in tableNames)
{
await context.Database.ExecuteSqlRawAsync($"ALTER TABLE {tableName} NOCHECK CONSTRAINT ALL");
}
// Remove rows
foreach (var tableName in tableNames)
{
await context.Database.ExecuteSqlRawAsync($"DELETE FROM {tableName}");
}
// Re-enable constraints
foreach (var tableName in tableNames)
{
await context.Database.ExecuteSqlRawAsync($"ALTER TABLE {tableName} CHECK CONSTRAINT ALL");
}
}
// Re - seed database
await _dataSeeder.SeedAsync();
}
public async Task DisposeAsync()
{
// ... clean up test data from the database with and use async calls here...
}
}
[CollectionDefinition("Database collection")]
public class DatabaseCollection : ICollectionFixture<DatabaseFixture>
{
// This class has no code, and is never created. Its purpose is simply
// to be the place to apply [CollectionDefinition] and all the
// ICollectionFixture<> interfaces.
}
The last thing is to decorate each test class with following:
namespace ABPProject.Things
{
[Collection("Database collection")]
public class ThingAppService_Tests : ABPProjectApplicationTestBase
{
public readonly DatabaseFixture _fixture;
private readonly IThingAppService _thingAppService;
public ThingAppService_Tests(DatabaseFixture fixture)
{
_fixture = fixture;
_thingAppService = GetRequiredService<IThingAppService>();
}
[Fact]
public async Task GetListAsync_Should_Get_all_Things()
{
// This is a test
}
}
}
I'm having problems with seeding my inmemory database with test-data in nUnit integration tests.
I've created a custom WebApplicationFactory so i could use an inmemory database:
public class SiriusWebApplicationFactory : WebApplicationFactory<Startup>
{
protected override void ConfigureWebHost(IWebHostBuilder builder)
{
builder.ConfigureTestServices(services =>
{
var descriptor = services.SingleOrDefault(d => d.ServiceType == typeof(IAuthenticationSchemeProvider));
services.Remove(descriptor);
CleanupDatabaseRegistrations<SiriusContext>(services);
services.AddDbContext<SiriusContext>(options => options.UseInMemoryDatabase($"Testdb-{Guid.NewGuid()}"));
// Build the service provider.
var sp = services.BuildServiceProvider();
// Create a scope to obtain a reference to the database contexts
using var scope = sp.CreateScope();
var scopedServices = scope.ServiceProvider;
var context = scopedServices.GetRequiredService<SiriusContext>();
// Ensure the database is created.
context.Database.EnsureCreated();
});
}
private void CleanupDatabaseRegistrations<TDbContext>(IServiceCollection services) where TDbContext : DbContext
{
var descriptor = services.SingleOrDefault(d => d.ServiceType == typeof(DbContextOptions<TDbContext>));
if (descriptor != null)
{
services.Remove(descriptor);
}
descriptor = services.FirstOrDefault(d => d.ServiceType == typeof(DbContextOptions));
if (descriptor != null)
{
services.Remove(descriptor);
}
descriptor = services.SingleOrDefault(d => d.ServiceType == typeof(TDbContext));
if (descriptor != null)
{
services.Remove(descriptor);
}
}
}
After this, i've created a base class which is being used by all my integration test classes.
This base class implements the nUnit OneTimeSetup method where i create the HttpClient for testing my controllers:
protected HttpClient HttpClient;
protected SiriusContext DbContext;
[OneTimeSetUp]
public void OneTimeSetUp()
{
_webApplicationFactory = new SiriusWebApplicationFactory();
HttpClient = _webApplicationFactory.CreateClient();
DbContext = _webApplicationFactory.Services.GetService<SiriusContext>();
DoReseed();
}
As you can see i'm exposing my DbContext so that my test classes can seed the test data.
The DoReseed method is just an emppty method used by my integration test classes to provide test data.
protected virtual void DoReseed() { }
The implementation inside one of my testclasses looks like this:
public class AdminAanbestedingApplicatieControllerTests : BaseIntegrationTest
{
[Test]
public async Task AanbestedingApplicaties_GetAll_ShouldReturnData()
{
var result = await HttpClient.GetFromApi_AssertSuccess<List<AanbestedingApplicatie>>(RouteConstants.Lijsten.AdminAanbestedingApplicaties.GetAll);
Assert.IsTrue(result.Count > 1);
}
protected override void DoReseed()
{
DbContext.AanbestedingApplicaties.Add(AanbestedingApplicatiesObjectMother.AanbestedingApplicatie_Actief);
DbContext.AanbestedingApplicaties.Add(AanbestedingApplicatiesObjectMother.AanbestedingApplicatie_InActief);
DbContext.AanbestedingApplicaties.Add(AanbestedingApplicatiesObjectMother.AanbestedingApplicatie_ToDelete);
DbContext.AanbestedingApplicaties.Add(AanbestedingApplicatiesObjectMother.AanbestedingApplicatie_ToUpdate);
DbContext.SaveChanges();
}
}
When i execute my test, the seeding gets executed but the repository cannot see the seeded data?
The DbContext inside my repo does not contain my seeded data...
Anyone has any idea why the DbContext inside my repository does not contain the seeded test data?
The repo looks like this:
public IEnumerable<AanbestedingApplicatie> GetAll()
{
return SiriusContext.AanbestedingApplicaties.OrderBy(l => l.Naam).ProjectTo<AanbestedingApplicatie>(Mapper.ConfigurationProvider)
.ToList();
}
The Context has been injected inside the constructor...
I'd like to know how I can have Imports in my custom ExportProvider. Here's an example of what I'm trying to do:
public class MyExportProvider : ExportProvider
{
private List<Export> _exports;
[Import()]
private IConfig _config;
public MyExportProvider()
base()
{
_exports = new List<Export>();
}
protected override IEnumerable<Export> GetExportsCore(ImportDefinition definition,
AtomicComposition composition)
{
if (!_exports.Any())
Initialize();
return _exports.Where(x => definition.IsConstraintSatisfiedBy(s.Definition);
}
private void Initialize()
{
var contractName = typeof(MyObject).FullName;
var exportDefinition = new ExportDefinition(contractName, null);
var export = new Export(exportDefinition, () => new MyObject(_config));
_exports.Add(export);
}
}
I am adding the provider when I create the CompositionContainer.
Unfortunately, the import is never satisfied. I can see this by setting AllowDefaults = true so my provider is created, but _config is always null.
How can I configure the container and/or provider so the Import will be satisfied?
When you are adding your export provider you are still creating your composition container. Thus I don't see how you can use the not yet created composition container to import parts of your custom export provider.
What I would do is first create a temporary CompositionContainer that will be used to create MyExportProvider.
Afterwards use the MyExportProvider to create your second final CompositionContainer that will be used by the rest of the application.
EDIT:
// this is your real container, only shown here for reference
CompositionContainer container;
public void BootstrapContainerMethod()
{
// Replace this part with the catalogs required to create your export provider.
var catalog = new AggregateCatalog();
catalog.Catalogs.Add(new DirectoryCatalog("./bin", "*.dll"));
// Your temporary container, declared here in local scope
// will be disposed because of using
using (var bootstrapContainer = new CompositionContainer(catalog))
{
var myExportProvider = bootstrapContainer.GetExportedValue<IMyExportProvider>();
// create your real container and optionnally add catalogs (not shown here)
container = new CompositionContainer(myExportProvider);
}
}
You might also consider the problem from another angle. Do you really need to have imports in your custom ExportProvider? I do not know your requirements, but maybe you can make do without having imports.
As an alternative to the dual CompositionContainer solution, you could wire this up in a single export provider, and have it compose itself using the same container. As an example, I've defined the following contract and it's export:
public interface ILogger
{
void Log(string message);
}
[Export(typeof(ILogger))]
public class ConsoleLogger : ILogger
{
public void Log(string message)
{
Console.WriteLine(message);
}
}
And with my example ExportProvider, I expect to be able to import an instance of it:
public class TestExportProvider : ExportProvider
{
private readonly object _lock = new object();
private bool _initialised;
[Import]
public ILogger Logger { get; set; }
public void SetCompositionService(ICompositionService service)
{
if (service == null) throw new ArgumentNullException("service");
lock (_lock)
{
if (!_initialised)
{
InitialiseProvider(service);
}
}
}
private void InitialiseProvider(ICompositionService service)
{
service.SatisfyImportsOnce(this);
_initialised = true;
}
protected override IEnumerable<Export> GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition)
{
if (_initialised)
{
Logger.Log("Getting available exports for '" + definition.ContractName + "'");
// Do work here.);
return Enumerable.Empty<Export>();
}
return Enumerable.Empty<Export>();
}
}
I provide an instance of an ICompositionService, which CompositionContainer implements, and I perform a first-time initialisation when I call SetCompositionService. It checks to see if it has already been initialised, and if not, goes ahead and calls the SatisfyImportsOnce method on itself.
We would wire this up, something like this:
// Build our catalog.
var catalog = new AssemblyCatalog(typeof(Program).Assembly);
// Create our provider.
var provider = new TestExportProvider();
// Create our container.
var container = new CompositionContainer(catalog, provider);
// Register the composition service to satisfy it's own imports.
provider.SetCompositionService(container);
Obviously you wouldn't be able to use any imports and your ExportProvider will explicitly create for you, but for everything else, it should work.
I'm considering re-rewriting some of my MVC controllers to be async controllers. I have working unit tests for these controllers, but I'm trying to understand how to maintain them in an async controller environment.
For example, currently I have an action like this:
public ContentResult Transaction()
{
do stuff...
return Content("result");
}
and my unit test basically looks like:
var result = controller.Transaction();
Assert.AreEqual("result", result.Content);
Ok, that's easy enough.
But when your controller changes to look like this:
public void TransactionAsync()
{
do stuff...
AsyncManager.Parameters["result"] = "result";
}
public ContentResult TransactionCompleted(string result)
{
return Content(result);
}
How do you suppose your unit tests should be built? You can of course invoke the async initiator method in your test method, but how do you get at the return value?
I haven't seen anything about this on Google...
Thanks for any ideas.
As with any async code, unit testing needs to be aware of thread signalling. .NET includes a type called AutoResetEvent which can block the test thread until an async operation has been completed:
public class MyAsyncController : Controller
{
public void TransactionAsync()
{
AsyncManager.Parameters["result"] = "result";
}
public ContentResult TransactionCompleted(string result)
{
return Content(result);
}
}
[TestFixture]
public class MyAsyncControllerTests
{
#region Fields
private AutoResetEvent trigger;
private MyAsyncController controller;
#endregion
#region Tests
[Test]
public void TestTransactionAsync()
{
controller = new MyAsyncController();
trigger = new AutoResetEvent(false);
// When the async manager has finished processing an async operation, trigger our AutoResetEvent to proceed.
controller.AsyncManager.Finished += (sender, ev) => trigger.Set();
controller.TransactionAsync();
trigger.WaitOne()
// Continue with asserts
}
#endregion
}
Hope that helps :)
I've written short AsyncController extension method that simplifies unit testing a bit.
static class AsyncControllerExtensions
{
public static void ExecuteAsync(this AsyncController asyncController, Action actionAsync, Action actionCompleted)
{
var trigger = new AutoResetEvent(false);
asyncController.AsyncManager.Finished += (sender, ev) =>
{
actionCompleted();
trigger.Set();
};
actionAsync();
trigger.WaitOne();
}
}
That way we can simply hide threading 'noise':
public class SampleAsyncController : AsyncController
{
public void SquareOfAsync(int number)
{
AsyncManager.OutstandingOperations.Increment();
// here goes asynchronous operation
new Thread(() =>
{
Thread.Sleep(100);
// do some async long operation like ...
// calculate square number
AsyncManager.Parameters["result"] = number * number;
// decrementing OutstandingOperations to value 0
// will execute Finished EventHandler on AsyncManager
AsyncManager.OutstandingOperations.Decrement();
}).Start();
}
public JsonResult SquareOfCompleted(int result)
{
return Json(result);
}
}
[TestFixture]
public class SampleAsyncControllerTests
{
[Test]
public void When_calling_square_of_it_should_return_square_number_of_input()
{
var controller = new SampleAsyncController();
var result = new JsonResult();
const int number = 5;
controller.ExecuteAsync(() => controller.SquareOfAsync(number),
() => result = controller.SquareOfCompleted((int)controller.AsyncManager.Parameters["result"]));
Assert.AreEqual((int)(result.Data), number * number);
}
}
If you want to know more I've written a blog post about how to Unit test ASP.NET MVC 3 asynchronous controllers using Machine.Specifications
Or if you want to check this code it's on a github
I'm developing modular application and I'd like for entities from different modules to be able to register their own friendly url slugs.
app.UseMvc(routes =>
{
routes.Routes.Add(new SlugRouter(routes.DefaultHandler));
(...)
});
But following code throws Cannot access a disposed object. Object name: 'CommerceDbContext'. when trying to access slug from the repository.
public class SlugRouter : IRouter
{
private readonly IRouter _target;
public SlugRouter(IRouter target)
{
_target = target;
}
public async Task RouteAsync(RouteContext context)
{
var slugRepository = context.HttpContext.RequestServices.GetService<IRepository<SlugEntity>>();
// ERROR: Cannot access a disposed object. Object name: 'CommerceDbContext'
var urlSlug = await slugRepository.GetAllIncluding(x => x.EntityType).FirstOrDefaultAsync(x => x.Slug == context.HttpContext.Request.Path.Value);
(...)
}
It must be something simple I'm missing to be able to access the repository from router. Thanks for any help.
Begin a unit of work:
public async Task RouteAsync(RouteContext context)
{
var slugRepository = context.HttpContext.RequestServices.GetService<IRepository<SlugEntity>>();
var unitOfWorkManager = context.HttpContext.RequestServices.GetService<IUnitOfWorkManager>();
using (var uow = unitOfWorkManager.Begin())
{
var urlSlug = await slugRepository.GetAllIncluding(x => x.EntityType).FirstOrDefaultAsync(x => x.Slug == context.HttpContext.Request.Path.Value);
await uow.CompleteAsync();
}
}
Access IModel. You do not need dbContext for.
for entities from different modules to be able to register their own
friendly url slugs
I do it this way:
1) move OnModelCreating to static methiod
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
BuildModel(modelBuilder);
}
public static void BuildModel(ModelBuilder modelBuilder)
{
// ...
}
2) Create model where you need:
var conventionSet = new ConventionSet();
var modelBuilder = new ModelBuilder(conventionSet);
AdminkaDbContext.BuildModel(modelBuilder);
var mutableModel = modelBuilder.Model;
There is your meta (in mutableModel ). You can loop through entities (types of entities).