EF Core 3.0 Integration Tests Access Db From In Memory Provider

I’m pulling the exact sample shown here: https://docs.microsoft.com/en-us/aspnet/core/test/integration-tests?view=aspnetcore-3.0

I’m trying to pull back out the Db Context inside a Test so I can add/delete some records.

[Fact]
        public async Task Post_DeleteAllMessagesHandler_ReturnsRedirectToRoot()
        {
 // this bombs
            var db = _factory.Services.GetService(typeof(ApplicationDbContext)) as ApplicationDbContext;
        }

Attached is the code sample:

IntegrationTestsSample.zip

[smitpatel]

@aherrick - Can you also describe what you is the error you are getting.

[ajcvickers]

@aherrick If you are following the exact steps from a walkthrough and it does’t work, then please file an issue on that walkthrough. There is a button on the bottom of the walkthrough page to do this.

The stack trace you posted does not contain any EF code. It looks to me, as @smitpatel said, that the D.I. container is not setup correctly or is being used correctly. How D.I. is intended to be used for this walkthrough is something that should at least initially be addressed by the author of the walkthrough.