1 This tests to make sure that baseVal and animVal are tied when animation is not enabled:
2 svg.x.baseVal.value = 0
3 svg.x.animVal.value = 0
4 setting svg.x.baseVal.value = 10
5 svg.x.baseVal.value = 10
6 svg.x.animVal.value = 10
8 setting svg.x.animVal.value = 5
9 caught exception: Failed to set the 'value' property on 'SVGLength': The attribute is read-only.
10 svg.x.baseVal.value = 10
11 svg.x.animVal.value = 10