# File test/src/expression_test.rb, line 57 def testPrefix parser = whitespace.many_ >> int.prefix(negate) << eof assertParser(' - -3 ', 3, parser) assertParser(' 3', 3, parser) assertParser('3 ', 3, parser) assertParser('-3', -3, parser) assertError(' - -', 'integer expected', parser, 4) assertError(' - -5 3', 'EOF expected', parser, 6) end