Add another test for error reporting

Author: tailhook

tests/query_errors.rs

@@ -19,3 +19,4 @@ fn test_error(filename: &str) {
 }
 
 #[test] fn invalid_curly_brace() { test_error("invalid_curly_brace"); }
+#[test] fn bad_args() { test_error("bad_args"); }

tests/query_errors/bad_args.txt

@@ -0,0 +1,7 @@
+query MyQuery {
+  field1([something])
+}
+---
+query parse error: Parse error at 2:10
+Unexpected `[[Punctuator]`
+Expected `Name`