<li>all consistency checks return "OK" (except the "reported value" check which might fail for min OR max upon zoom)</li>
<li>all the dimensions are the same (except when "fake minimal screen size" is enabled - then the "css" test shows the original value as this cannot be faked)</li>
<li>values do not change upon reload</li>
<li>upon zoom the values change</li>
<li>if "fake minimal screen size" is enabled resizing the window can change the value</li>