Yesterday we reported that Google added a mobile page testing tool to search, right in the search results page. In April, Google added a submit URL box to the search results. Now I am seeing an AMP testing tool in the Google search results.
Go to Google and search for [amp page test] or something similar and you will see the box at the top of the search results:
Here is what it looks like:
@kalpesh_bh notified me of this after I wrote about the other tool.
Forum discussion at Twitter.