I've updated my website with .Net Core 3.0 preview 2 and I want to make Integration Test with a TestServer. In .Net Core 2.2, I've been able to make it using WebApplicationFactory<Startup>
Since WebHostBuilder is about to be deprecated (see (https://docs.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-2.2&tabs=visual-studio) for more details.), I want to follow up and implement the new Generic HostBuilder now. It is working great for launching the website but it crashes when I launch my Integration tests. I know that WebApplicationFactory does use WebHostBuilder and that's why it's crashing, but I don't know how to change it for the Generic HostBuilder.
Here is my code that was working in .Net Core 2.2 :
namespace CompX.FunctionalTest.Web.Factory
{
public class CustomWebApplicationFactory<TStartup> : WebApplicationFactory<Startup>
{
protected override void ConfigureWebHost(IWebHostBuilder builder)
{
builder.ConfigureServices(services =>
{
// Create a new service provider.
var serviceProvider = new ServiceCollection()
.AddEntityFrameworkInMemoryDatabase()
.BuildServiceProvider();
// Add a database context (ApplicationDbContext) using an in-memory
// database for testing.
services.AddDbContext<ApplicationDbContext>(options =>
{
options.UseInMemoryDatabase("InMemoryDbForTesting");
options.UseInternalServiceProvider(serviceProvider);
});
services.AddDbContext<AppIdentityDbContext>(options =>
{
options.UseInMemoryDatabase("Identity");
options.UseInternalServiceProvider(serviceProvider);
});
services.AddIdentity<ApplicationUser, IdentityRole>()
.AddEntityFrameworkStores<AppIdentityDbContext>()
.AddDefaultTokenProviders();
// Build the service provider.
var sp = services.BuildServiceProvider();
// Create a scope to obtain a reference to the database
// context (ApplicationDbContext).
using (var scope = sp.CreateScope())
{
var scopedServices = scope.ServiceProvider;
var db = scopedServices.GetRequiredService<ApplicationDbContext>();
var loggerFactory = scopedServices.GetRequiredService<ILoggerFactory>();
var logger = scopedServices.GetRequiredService<ILogger<CustomWebApplicationFactory<TStartup>>>();
// Ensure the database is created.
db.Database.EnsureCreated();
try
{
// Seed the database with test data.
var userManager = scopedServices.GetRequiredService<UserManager<ApplicationUser>>();
AppIdentityDbContextSeed.SeedAsync(userManager).GetAwaiter().GetResult();
}
catch (Exception ex)
{
logger.LogError(ex, $"An error occurred seeding the database with test messages. Error: {ex.Message}");
}
}
});
}
}
}
I tried with TestServers from Microsoft.AspNetCore.TestHost, but it needs new WebHostBuilder() as parameters.
I also tried to pass this as parameters, but it didn't work as well :
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
It can't find the .ConfigureWebHostDefaults()function.
Did anyone successfuly implemented a Test server in .Net Core 3.0 ? Thanks a lot !
PS : I'm kinda new to .Net Core
EDIT :
That's the error that I get from all the methods that try to make a new server :
Here is the program.cs
namespace CompX.Web
{
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
}
Here is the issue that I've created on github : https://github.com/aspnet/AspNetCore/issues/7754
