| // Copyright 2018 PingCAP, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| use fail; |
| use raft::eraftpb::MessageType; |
| use std::sync::*; |
| use test_util::*; |
| |
| lazy_static! { |
| /// Failpoints are global structs, hence rules set in different cases |
| /// may affect each other. So use a global lock to synchronize them. |
| static ref LOCK: Mutex<()> = { |
| Mutex::new(()) |
| }; |
| } |
| |
| fn setup<'a>() -> MutexGuard<'a, ()> { |
| setup_for_test(); |
| // We don't want a failed test breaks others. |
| let guard = LOCK.lock().unwrap_or_else(|e| e.into_inner()); |
| fail::teardown(); |
| fail::setup(); |
| guard |
| } |
| |
| // test_reject_stale_term_message tests that if a server receives a request with |
| // a stale term number, it rejects the request. |
| // Our implementation ignores the request instead. |
| // Reference: section 5.1 |
| #[test] |
| fn test_reject_stale_term_message() { |
| let _guard = setup(); |
| let mut r = new_test_raft(1, vec![1, 2, 3], 10, 1, new_storage()); |
| fail::cfg("before_step", "panic").unwrap(); |
| r.load_state(&hard_state(2, 0, 0)); |
| |
| let mut m = new_message(0, 0, MessageType::MsgAppend, 0); |
| m.set_term(r.term - 1); |
| r.step(m).expect(""); |
| } |
| |
| // ensure that the Step function ignores the message from old term and does not pass it to the |
| // actual stepX function. |
| #[test] |
| fn test_step_ignore_old_term_msg() { |
| let _guard = setup(); |
| let mut sm = new_test_raft(1, vec![1], 10, 1, new_storage()); |
| fail::cfg("before_step", "panic").unwrap(); |
| sm.term = 2; |
| let mut m = new_message(0, 0, MessageType::MsgAppend, 0); |
| m.set_term(1); |
| sm.step(m).expect(""); |
| } |