Kevin Barabash fafaf85f96 Fix MathML output for ' and large operators with limits (#788) ...

Summary: (@kevinbarabash)
This diff extracts MathML builder tests out into a separate file and
updates them to use jest snapshot testing.  It updates the output of
prime ' from using identifier nodes <mi> to operator nodes <mo>.  It
also updates large operators with limits to use munderover instead
of msupsub. I added an option to remove unnecessary mrows to buildGroup.
Right now it's only used for by groupTypes.supsub. I'll see if it can be used
elsewhere (everywhere?) in a follow up PR.

Test Plan:
- make test w/o errors
- verify mathml snapshots contain the desired markup

2017-08-14 22:27:48 +09:00

..

mathml-spec.js.snap

Fix MathML output for ' and large operators with limits (#788)

2017-08-14 22:27:48 +09:00