texmath-0.12.5: test/writer/mml/mactionBtoggle1.test

<<< native
[ EFraction NormalFrac (EIdentifier "x") (ENumber "2")
, ESymbol Bin "+"
, ENumber "2"
]
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <mfrac>
      <mi>x</mi>
      <mn>2</mn>
    </mfrac>
    <mo>+</mo>
    <mn>2</mn>
  </mrow>
</math>