Question: nested component testing

[conficient]

How would the library work for testing nested components that interact, e.g. using [CascadingParameter], such as the TabSet and Tab examples?

[christiansparre]

@conficient I have been playing around with this the last couple of hours trying to test a component that has an AuthorizeView component to show/hide some content based on auth policies.

I have been going over the Blazor code and tests for the AuthorizeView component, but I'm not super familiar with the Blazor source. However something like this AuthorizeViewTest.cs#L161 might be necessary to make it work, but not completely sure how I would approach it :)

[christiansparre]

@conficient ok, I might have been closer than I thought :)

See this gist: https://gist.github.com/christiansparre/2b0e16048cffca538e07ceba2bbaf5e5 where I test a simple sidebar component.

I had to make a few changes to Steves TestHost, see this https://github.com/christiansparre/BlazorUnitTestingPrototype/blob/feature/testhost/Microsoft.AspNetCore.Components.Testing/TestHost.cs

I added a ConfigureServices method and added the ability to pass a ParameterView to AddComponent. Maybe it can help you 😊

[conficient]

Thanks @christiansparre - I've not tried using the TestHost yet as preview 9 hadn't dropped, I just saw it as a use case that needed to be flagged. Once I've upgraded my dev setup I'll give it a try.

[BSThakur]

Thank you @christiansparre that seems great.
Could you please tell, How would the library work for file uploading functionality testing ?

[endeffects]

@SteveSandersonMS @christiansparre Thanks alot for sharing your solutions.

At the moment i'm struggeling with my AuthorizeView-Components.
I tried to create a build in wrapper within the ContainerComponent / TestHost
to return the original component instance to my unit tests, but i had no luck yet.

Is there any way to access the ChildComponent instance?