<run>
<precisionModel type="FLOATING" />
<case>
<desc>
Difference of two 3D geometries
</desc>
<a>
LINESTRING(0 0,0 10,10 10,10 0,0 0)
</a>
<b>
GEOMETRYCOLLECTION Z (GEOMETRYCOLLECTION Z (MULTILINESTRING Z ((0 0 10,10 0 20),(10 0 20,10 10 30)),LINESTRING Z (0 10 20,10 10 30)),LINESTRING Z (0 0 10,0 10 20))
</b>
<test>
<op name="difference" arg1="A" arg2="B">
LINESTRING EMPTY
</op>
</test>
</case>
</run>
