fail_point.rs (1105B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2022-2025 Taler Systems SA 4 5 TALER is free software; you can redistribute it and/or modify it under the 6 terms of the GNU Affero General Public License as published by the Free Software 7 Foundation; either version 3, or (at your option) any later version. 8 9 TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. 12 13 You should have received a copy of the GNU Affero General Public License along with 14 TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 */ 16 #[derive(Debug, thiserror::Error)] 17 #[error("{0}")] 18 pub struct Injected(&'static str); 19 20 /// Inject random failure when 'fail' feature is used 21 #[allow(unused_variables)] 22 pub fn fail_point(msg: &'static str, prob: f32) -> Result<(), Injected> { 23 #[cfg(feature = "fail")] 24 return if rand::random::<f32>() < prob { 25 Err(Injected(msg)) 26 } else { 27 Ok(()) 28 }; 29 30 Ok(()) 31 }