github.com/benhoyt/goawk@v1.8.1/testdata/t.assert (about)

     1  # tests whether function returns sensible type bits
     2  
     3  function assert(cond) { # assertion
     4      if (!cond) print "   >>> assert failed <<<"
     5  }
     6  
     7  function i(x) { return x }
     8  
     9  { m = length($1); n = length($2); n = i(n); assert(m > n) }