When trying a simple test with nested square brackets such as:

test nested index [[ x[y[5]] ]] parse succeeds

the testing language gives a syntax error. It does not work even with spaces separating the two closing ]].

Submitted by Eduardo Amorim on 28 October 2014 at 11:15

Try one of the other quotations at https://github.com/metaborg/spt/blob/master/org.strategoxt.imp.testing/syntax/Spoofax-Testing.sdf#L200, like

test nested index [[[ x[y[5]] ]]] parse succeeds