[Test]
    public void Overlay_StartClosedTest()
    {
        var jsRuntimeMock = new Mock<IJSRuntime>(MockBehavior.Loose);

        Context.Services.AddSingleton(typeof(IJSRuntime), jsRuntimeMock.Object);
        // verifies lockScroll was called once and 2 arguments were supplied
        jsRuntimeMock
            .Setup(x => x.InvokeAsync<IJSVoidResult>("mudScrollManager.lockScroll", It.Is<object[]>(y => y.Length == 2)))
            .ReturnsAsync(Mock.Of<IJSVoidResult>())
            .Verifiable();

        // Expect unlockScroll to NOT be called
        jsRuntimeMock
            .Setup(x => x.InvokeAsync<IJSVoidResult>(
                "mudScrollManager.unlockScroll",
                It.IsAny<object[]>()))
            .Throws(new Exception("unlockScroll should not be called!"));

        var dialog = Context.RenderComponent<MudDialogProvider>();
        var comp = Context.RenderComponent<OverlayScrollLockedTest>();
        // click the button opening dialog
        var button = comp.Find("button");
        button.Click();
        // verify dialog is open
        comp.WaitForAssertion(() => dialog.FindComponent<MudOverlay>().Should().NotBeNull());

        // verify lockScroll was called
        jsRuntimeMock.Verify(
            x => x.InvokeAsync<IJSVoidResult>(
                "mudScrollManager.lockScroll",
                It.IsAny<object[]>()),
            Times.Once);

        // verify unlockScroll was NOT called
        jsRuntimeMock.Verify(
            x => x.InvokeAsync<IJSVoidResult>(
                "mudScrollManager.unlockScroll",
                It.IsAny<object[]>()),
            Times.Never);
    }