How to inject NavigationManager in bunit Blazor component unit test

Question

I am getting this error when injecting from unit test.

System.InvalidOperationException: ''NavigationManagerProxy' has not been initialized.'

My code:

Services.AddSingleton<NavigationManager>(Mock.Of<NavigationManager>());         

Answer 1

I use this class for my unit tests:

internal class TestNav : NavigationManager
{
    public TestNav()
    {
        Initialize("https://unit-test.example/", "https://unit-test.example/");
    }

    protected override void NavigateToCore(string uri, bool forceLoad)
    {
        NotifyLocationChanged(false);
    }
}

Then inside the test set it up like this:

Services.AddSingleton<NavigationManager>(new TestNav());