Feature: Insert a paragraph before or after a paragraph

In order to add new content in the middle of an existing document

As a developer using python-docx

I need a way to insert a paragraph relative to another paragraph

Scenario: Add a new paragraph above an existing paragraph

Given a document containing three paragraphs

When I insert a paragraph above the second paragraph

Then the document contains four paragraphs

And the text of the second paragraph matches the text I set

And the style of the second paragraph matches the style I set