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nbarbettini / little-aspnetcore-book

The Little ASP.NET Core Book, a friendly introduction to web programming and ASP.NET Core 2.0

Home Page:http://littleasp.net/book

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Unit test error in AddItemAsync

nbarbettini opened this issue · comments

commented

Feedback:

When running Unit tests: there is an error in test execution, but the test project doesn’t say anything more than this generic error message. (I tried in both VS Code and VS 2017 15.4)
Message: System.NullReferenceException : Object reference not set to an instance of an object.

I tracked it down to the second parameter of the AddItemAsync method, which expects a user but is getting passed a null value from the test method.

commented

Yes, this is an error, I got a comment on this page:
https://windsting.github.io/little-aspnetcore-book/book/chapters/automated-testing/unit-testing.html

I checked the code it seems caused by the null in this line:

await service.AddItemAsync(new NewTodoItem { Title = "Testing?" }, null);