queryparser: add field respecification test (#2550)

Author: PSeitz

query-grammar/src/query_grammar.rs

@@ -1497,6 +1497,11 @@ mod test {
         test_is_parse_err(r#"field:(+a -"b c""#, r#"(+"field":a -"field":"b c")"#);
     }
 
+    #[test]
+    fn field_re_specification() {
+        test_parse_query_to_ast_helper(r#"field:(abc AND b:cde)"#, r#"(+"field":abc +"b":cde)"#);
+    }
+
     #[test]
     fn test_parse_query_single_term() {
         test_parse_query_to_ast_helper("abc", "abc");