Tests the #comp_text_node portions of the AccName Name Computation algorithm.

text/element/text nodes, no space

headinglabel

text/comment/text nodes, no space

headinglabel

text/comment/text nodes, with space

heading label

text node, with tab char

heading label

text node, with non-breaking space

heading label

text node, with extra non-breaking space

heading   label

text node, with leading/trailing non-breaking space

 heading label 

text node, with mixed space and non-breaking space

heading   label

text nodes, with deeply nested space

heading label

text nodes, with single line break

heading label