// Copyright © 2024 Mikhail Hogrefe // // This file is part of Malachite. // // Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU // Lesser General Public License (LGPL) as published by the Free Software Foundation; either version // 3 of the License, or (at your option) any later version. See . use malachite_base::num::basic::integers::PrimitiveInt; use malachite_base::slices::{slice_leading_zeros, slice_test_zero, slice_trailing_zeros}; use malachite_base::test_util::generators::common::GenConfig; use malachite_base::test_util::generators::unsigned_vec_gen; #[test] fn test_slice_leading_zeros() { let test = |xs: &[u32], out| { assert_eq!(slice_leading_zeros(xs), out); }; test(&[], 0); test(&[0], 1); test(&[0, 0, 0], 3); test(&[123], 0); test(&[123, 0], 0); test(&[0, 123, 0, 0, 0], 1); test(&[1, 2, 3], 0); test(&[0, 0, 0, 1, 2, 3], 3); } #[test] fn slice_leading_zeros_properties() { let mut config = GenConfig::new(); config.insert("mean_length_n", 32); config.insert("mean_length_d", 1); config.insert("mean_stripe_n", 16 << u8::LOG_WIDTH); config.insert("mean_stripe_d", 1); unsigned_vec_gen::().test_properties_with_config(&config, |xs| { let leading_zeros = slice_leading_zeros(&xs); assert!(leading_zeros <= xs.len()); assert_eq!(leading_zeros == xs.len(), slice_test_zero(&xs)); let mut new_xs = xs; new_xs.reverse(); assert_eq!(slice_trailing_zeros(&new_xs), leading_zeros); }); }