Test that matched text nodes, comments, and processing instructions
are wrapped in document nodes. H/t @galtm for the test case.
ABCThe pipeline root is not “results”.No ex:comment element.Too many ex:comment elements.The ex:comment results are incorrectNo ex:processing-instruction element.Too many ex:processing-instruction elements.The ex:processing-instruction results are incorrectNo ex:text element.Too many ex:text elements.The ex:text results are incorrectNo ex:element element.Too many ex:element elements.The ex:element results are incorrect