Whitespace nodes should be ignored.
Thre is another child element of the same type.
There is a posterior child element of another type.

> A next element of the parent should not affect.

The parent element of the same type should not affect.
A child of the next element should not affect.

The first child element of the same type should not match.
The first child element of the same type should not match, the last child has a case-different tag name.