public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnNull_HandleIsNotCreated(RightToLeft rightToLeft, int minimum, int maximum, int value)
        {
            using VScrollBar scrollBar = GetVScrollBar(createControl: false, rightToLeft, minimum, maximum, value);
            ScrollBarThumbAccessibleObject accessibleObject = GetThumb(scrollBar);

            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.Parent));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.NextSibling));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.PreviousSibling));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.FirstChild));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.LastChild));
            Assert.False(scrollBar.IsHandleCreated);
        }
        public void VScrollBarThumbAccessibleObject_FragmentNavigate_ReturnExpected_MinimumEqualsMaximum(RightToLeft rightToLeft, int minimum, int maximum, int value)
        {
            using VScrollBar scrollBar = GetVScrollBar(createControl: true, rightToLeft, minimum, maximum, value);
            var scrollBarAccessibleObject = (ScrollBar.ScrollBarAccessibleObject)scrollBar.AccessibilityObject;
            ScrollBarThumbAccessibleObject accessibleObject = scrollBarAccessibleObject.ThumbAccessibleObject;

            Assert.Equal(scrollBarAccessibleObject, accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.Parent));
            Assert.Equal(scrollBarAccessibleObject.FirstLineButtonAccessibleObject, accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.PreviousSibling));
            Assert.Equal(scrollBarAccessibleObject.LastLineButtonAccessibleObject, accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.NextSibling));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.FirstChild));
            Assert.Null(accessibleObject.FragmentNavigate(UiaCore.NavigateDirection.LastChild));
            Assert.True(scrollBar.IsHandleCreated);
        }