Unit Testing with Multitenancy and tenant per DB #1791

carelearning created 7 years ago

Hello,

I am trying to write unit tests in a situation where we have multiple tenants and each tenant has its own database. Not matter what is tried, this error keeps getting thrown: Castle.MicroKernel.ComponentActivator.ComponentActivatorException ComponentActivator: could not instantiate We start the test like this:

namespace MyCompanyName.AbpZeroTemplate.Tests.Migration
{
    using AbpZeroTemplate.Migration;
    using System;
    using System.IO;
    using System.Threading.Tasks;
    using Xunit;

    public class MigrationAppService_Tests : AppTestBase
    {
        private readonly IMigrationAppService _migrationAppService;

        public MigrationAppService_Tests()
        {
            LoginAsHostAdmin();
            
            _migrationAppService = Resolve<IMigrationAppService>();
        }

        [Fact]
        public async Task IfTenantIsMissingSaveZipAsyncThrowsException()
        {
            await _migrationAppService.SaveZipAsync(1, new MemoryStream(), String.Empty);
        }
    }
}

The "stystem under test" is a service here:

namespace MyCompanyName.AbpZeroTemplate.Migration
{
    using Abp.Domain.Repositories;
    using MultiTenancy;
    using System;
    using System.IO;
    using System.Threading.Tasks;

    public class MigrationAppService : AbpZeroTemplateAppServiceBase, IMigrationAppService
    {
        private readonly IRepository<Tenant> _tenantRepository;

        public MigrationAppService(IRepository<Tenant> tenantRepository)
        {
            _tenantRepository = tenantRepository;
        }

        public async Task SaveZipAsync(int id, Stream stream, string path)
        {
            var tenant = await _tenantRepository.GetAsync(id);
            if (tenant == null)
                throw new Exception($"Tenant with {id} was not found.");
        }
    }
}

The tenant and host DB context is attached. It appears that the error surfaces in AbpZeroTemplateTenantDbContext.AbpZeroTemplateTenantDbContext() and might be trying to use the tenant context instead of the host. The 15 lines of the error is:

Castle.MicroKernel.ComponentActivator.ComponentActivatorException
ComponentActivator: could not instantiate MyCompanyName.AbpZeroTemplate.EntityFramework.AbpZeroTemplateTenantDbContext
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateInstanceCore(ConstructorCandidate constructor, Object[] arguments, Type implType)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.CreateInstance(CreationContext context, ConstructorCandidate constructor, Object[] arguments)
   at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.InternalCreate(CreationContext context)
   at Castle.MicroKernel.ComponentActivator.AbstractComponentActivator.Create(CreationContext context, Burden burden)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.CreateInstance(CreationContext context, Boolean trackedExternally)
   at Castle.MicroKernel.Lifestyle.AbstractLifestyleManager.Resolve(CreationContext context, IReleasePolicy releasePolicy)
   at Castle.MicroKernel.Handlers.DefaultHandler.ResolveCore(CreationContext context, Boolean requiresDecommission, Boolean instanceRequired, Burden& burden)
   at Castle.MicroKernel.Handlers.DefaultHandler.Resolve(CreationContext context, Boolean instanceRequired)
   at Castle.MicroKernel.DefaultKernel.ResolveComponent(IHandler handler, Type service, IDictionary additionalArguments, IReleasePolicy policy)
   at Castle.MicroKernel.DefaultKernel.Castle.MicroKernel.IKernelInternal.Resolve(Type service, IDictionary arguments, IReleasePolicy policy)
   at Abp.EntityFramework.DefaultDbContextResolver.Resolve[TDbContext](String connectionString) in D:\Halil\GitHub\aspnetboilerplate\src\Abp.EntityFramework\EntityFramework\DefaultDbContextResolver.cs:line 30
   at Abp.EntityFramework.Uow.EfUnitOfWork.GetOrCreateDbContext[TDbContext](Nullable`1 multiTenancySide) in D:\Halil\GitHub\aspnetboilerplate\src\Abp.EntityFramework\EntityFramework\Uow\EfUnitOfWork.cs:line 130
   at Castle.Proxies.EfRepositoryBase`3Proxy_14.get_Context_callback()

Can you advise on how to write this simple unit test or how to avoid this error?

Thank you for your help. DBContexts.zip

Unit Testing with Multitenancy and tenant per DB #1791

3 Answer(s)