How to mock Blazor Hotkeys library in blazor component?

[JGSilverman]

I have a fairly standard blazor component, but we are using the Blazor Hotkeys library found here inside the component. It is used like this:

@inject HotKeys HotKeys

@code {
   public HotKeysContext HotKeysContext;

   // on init method shortened for brevity
  protected OnInitializedAsync()
 {
   HotKeysContext = HotKeys.CreateContext().Add(/// add hotkeys config);
 }
}

When creating a bUnit test for this component, without the hotkeys it blows up with

SystemInvalidOperationException: .... There is no registered service of type 'Toolbelt.Blazor.HotKeys.HotKeys'.

How do I wire this up so I can test my component?

[linkdotnet]

Hey @JGSilverman

just add Services.AddHotKeys() to your test:

public void MyTest()
{
    Services.AddHotKeys();
    var cut = RenderComponent<MyComponentWithHotKeys>();
    // ...
}

Something similar you did anyway in your production code. The README describes this very well. As your production service-container is a different on than your test container, you have to register it in both places.