I have simple navigation service:

public class NavigationService(INavigation navigation) : INavigationService
{
    public INavigation Navigation { get; } = navigation;

    public void NavigateToControlPage()
    {
        var page = new ControlPage();
        Navigation.PushAsync(page);
    }
}

and the test:

[Fact]
public void NavigationToControlPageShouldPushAsyncPage()
{
    // Arrange
    var navigationMock = new Mock<INavigation>();
    var sut = new Ns.NavigationService(navigationMock.Object);

    // Act
    sut.NavigateToControlPage();

    // Assert
    navigationMock.Verify(n => n.PushAsync(It.IsAny<ControlPage>()), Times.Once);
}

And this test failes because there is exception:
Microsoft.Maui.Controls.Xaml.XamlParseException : Position 9:11. StaticResource not found for key Grey1

I think the test try to create/open ControlPage and the static resource doesn’t exist. I am wondering is my way of doing navigation via service good? Also, is my test good? General question how can I test my service? I want to test that method pushes to Navigation my ControlPage.