pgsql: add test for parameter status parser

Since we've done some changes to how the parameters are parsed, add one
more test case to check that.

Bug OISF#5579

rust/src/pgsql/parser.rs

@@ -2073,7 +2073,62 @@ mod tests {
             }
         }
 
-        // TODO keep adding more messages
+        //A series of response messages from the backend:
+        /* R   ·    S   ·application_name  S   ·client_encoding UTF8 S   ·DateStyle ISO, MDY S   &default_transaction_read_only off S   ·in_hot_standby off S   ·integer_datetimes on S   ·IntervalStyle postgres S   ·is_superuser off S   ·server_encoding UTF8 S   ·server_version 14.5 S   "session_authorization ctfpost S   #standard_conforming_strings on S   ·TimeZone Europe/Paris K      ···O··Z   ·I */
+        let buf = &[
+            0x52, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
+            0x00, 0x53, 0x00, 0x00, 0x00, 0x16, 0x61, 0x70,
+            0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f,
+            0x6e, 0x5f, 0x6e, 0x61, 0x6d, 0x65, 0x00, 0x00,
+            0x53, 0x00, 0x00, 0x00, 0x19, 0x63, 0x6c, 0x69,
+            0x65, 0x6e, 0x74, 0x5f, 0x65, 0x6e, 0x63, 0x6f,
+            0x64, 0x69, 0x6e, 0x67, 0x00, 0x55, 0x54, 0x46,
+            0x38, 0x00, 0x53, 0x00, 0x00, 0x00, 0x17, 0x44,
+            0x61, 0x74, 0x65, 0x53, 0x74, 0x79, 0x6c, 0x65,
+            0x00, 0x49, 0x53, 0x4f, 0x2c, 0x20, 0x4d, 0x44,
+            0x59, 0x00, 0x53, 0x00, 0x00, 0x00, 0x26, 0x64,
+            0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x5f, 0x74,
+            0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69,
+            0x6f, 0x6e, 0x5f, 0x72, 0x65, 0x61, 0x64, 0x5f,
+            0x6f, 0x6e, 0x6c, 0x79, 0x00, 0x6f, 0x66, 0x66,
+            0x00, 0x53, 0x00, 0x00, 0x00, 0x17, 0x69, 0x6e,
+            0x5f, 0x68, 0x6f, 0x74, 0x5f, 0x73, 0x74, 0x61,
+            0x6e, 0x64, 0x62, 0x79, 0x00, 0x6f, 0x66, 0x66,
+            0x00, 0x53, 0x00, 0x00, 0x00, 0x19, 0x69, 0x6e,
+            0x74, 0x65, 0x67, 0x65, 0x72, 0x5f, 0x64, 0x61,
+            0x74, 0x65, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x00,
+            0x6f, 0x6e, 0x00, 0x53, 0x00, 0x00, 0x00, 0x1b,
+            0x49, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c,
+            0x53, 0x74, 0x79, 0x6c, 0x65, 0x00, 0x70, 0x6f,
+            0x73, 0x74, 0x67, 0x72, 0x65, 0x73, 0x00, 0x53,
+            0x00, 0x00, 0x00, 0x15, 0x69, 0x73, 0x5f, 0x73,
+            0x75, 0x70, 0x65, 0x72, 0x75, 0x73, 0x65, 0x72,
+            0x00, 0x6f, 0x66, 0x66, 0x00, 0x53, 0x00, 0x00,
+            0x00, 0x19, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72,
+            0x5f, 0x65, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e,
+            0x67, 0x00, 0x55, 0x54, 0x46, 0x38, 0x00, 0x53,
+            0x00, 0x00, 0x00, 0x18, 0x73, 0x65, 0x72, 0x76,
+            0x65, 0x72, 0x5f, 0x76, 0x65, 0x72, 0x73, 0x69,
+            0x6f, 0x6e, 0x00, 0x31, 0x34, 0x2e, 0x35, 0x00,
+            0x53, 0x00, 0x00, 0x00, 0x22, 0x73, 0x65, 0x73,
+            0x73, 0x69, 0x6f, 0x6e, 0x5f, 0x61, 0x75, 0x74,
+            0x68, 0x6f, 0x72, 0x69, 0x7a, 0x61, 0x74, 0x69,
+            0x6f, 0x6e, 0x00, 0x63, 0x74, 0x66, 0x70, 0x6f,
+            0x73, 0x74, 0x00, 0x53, 0x00, 0x00, 0x00, 0x23,
+            0x73, 0x74, 0x61, 0x6e, 0x64, 0x61, 0x72, 0x64,
+            0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x6f, 0x72, 0x6d,
+            0x69, 0x6e, 0x67, 0x5f, 0x73, 0x74, 0x72, 0x69,
+            0x6e, 0x67, 0x73, 0x00, 0x6f, 0x6e, 0x00, 0x53,
+            0x00, 0x00, 0x00, 0x1a, 0x54, 0x69, 0x6d, 0x65,
+            0x5a, 0x6f, 0x6e, 0x65, 0x00, 0x45, 0x75, 0x72,
+            0x6f, 0x70, 0x65, 0x2f, 0x50, 0x61, 0x72, 0x69,
+            0x73, 0x00, 0x4b, 0x00, 0x00, 0x00, 0x0c, 0x00,
+            0x00, 0x0b, 0x8d, 0xcf, 0x4f, 0xb6, 0xcf, 0x5a,
+            0x00, 0x00, 0x00, 0x05, 0x49
+        ];
+
+        let result = pgsql_parse_response(buf);
+        assert!(result.is_ok());
     }
 
     #[test]
@@ -2227,4 +2282,5 @@ mod tests {
 
         assert_eq!(ok_res, result);
     }
+
 }