test/result_test.rb:687: warning: assigned but unused variable - result1
test/schema_test.rb:17: warning: ambiguous first argument; put parentheses or a space even after `-' operator
test/schema_test.rb:99: warning: ambiguous first argument; put parentheses or a space even after `-' operator
test/schema_test.rb:173: warning: ambiguous first argument; put parentheses or a space even after `-' operator
test/schema_test.rb:407: warning: ambiguous first argument; put parentheses or a space even after `-' operator
test/thread_test.rb:52: warning: assigned but unused variable - e
Fixing a few test warnings: