# From swap/test/math/math_test.n3
@prefix : <#> .
@prefix math: <http://www.w3.org/2000/10/swap/math#> .

# Corner cases:

{ () math:sum ?x } =>  { ?x :valueOf " () math:sum ?x  --- should be 0" }.
{ () math:product ?x } =>  { ?x :valueOf " () math:product ?x  --- should be 1" }.
