CODEWITHSUNDEEP
c#unit-testingxunitaspnetboilerplate
Oakfire
Oakfire

Reputation: 13

Mocking the UnitOfWorkManager.Current in a unit test

When unit testing, the system cannot resolve UnitOfWorkManager.Current (nullreference exception). The _unitOfWorkManager is of type: IUnitOfWorkManager, and injected via DI.

I'm testing the following web api code:

[HttpPost]
public async Task<IHttpActionResult> Subscription(SubscriptionInputDto model)
{
    if (!await VendorHasAccess(model.OrganizationId))
        return StatusCode(HttpStatusCode.Forbidden);

    var input = new Subscription
    {
        ...
    };

    var data = await _subscriptionRepository.InsertAsync(input);

    await _unitOfWorkManager.Current.SaveChangesAsync();

    return Ok(data.MapTo<SubscriptionDto>());
}

…with the following unit test:

[Fact]
public async Task Should_Create_New_Subscription()
{
    //Arrange
    var organization = await UsingDbContextAsync(async context => await context.VendorOrganizations.FirstOrDefaultAsync());
    var input = new SubscriptionInputDto { OrganizationId = organization.Id };

    //Act
    var actionResult = await _vendorController.Subscription(input);
    var response = actionResult as OkNegotiatedContentResult<SubscriptionDto>;

    //Assert
    Assert.NotNull(response);
    Assert.Equal(organization.Id, response.Content.OrganizationId);
}

I cannot figure out, or find any documentation on, how to resolve the UnitOfWorkManager.Current so that it doesn't fail for the unit test. The web API code itself works in production.

Any tips?

Upvotes: 1

Views: 905

Answers (1)

aaron
aaron

Reputation: 43108

Make your controller method virtual.

See: UnitOfWork Attribute Restrictions

You can use UnitOfWork attribute for:

  • All public virtual methods for self injected classes (Like MVC Controllers and Web API Controllers).

Update

If beginning a unit of work explicitly in your test is a reasonable resolution:

using (var unitOfWork = Resolve<IUnitOfWorkManager>().Begin())
{
    // ...
    unitOfWork.Complete();
}

Upvotes: 2

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