Verify if div element model has been correctly upcasted depending on
the content context:
div element including only phrasing content should be upcasted to
htmlDivParagraph model.
div element including paragraphs should be upcasted to
htmlDiv model.
div element to
htmlDiv model.
div element should be correctly split
without data loss (you should see foobar in image caption).
Paragraph 1
Paragraph 2
Paragraph 3
paragraph
bar
bar