texmath-0.13.1.2: test/writer/mml/genfrac.test

<<< native
[ EDelimited
    "{"
    "}"
    [ Right (EFraction NoLineFrac (EIdentifier "x") (EIdentifier "y"))
    ]
]
>>> mml
<?xml version='1.0' ?>
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>
    <mo stretchy="true" form="prefix">{</mo>
    <mfrac linethickness="0">
      <mi>x</mi>
      <mi>y</mi>
    </mfrac>
    <mo stretchy="true" form="postfix">}</mo>
  </mrow>
</math>