68 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// UNSUPPORTED: libcpp-has-no-incomplete-pstl12 13// <algorithm>14 15// template<class ExecutionPolicy, class ForwardIterator, class Predicate>16// bool none_of(ExecutionPolicy&& exec, ForwardIterator first, ForwardIterator last,17// Predicate pred);18 19#include <algorithm>20#include <cassert>21#include <vector>22 23#include "test_macros.h"24#include "test_execution_policies.h"25#include "test_iterators.h"26 27EXECUTION_POLICY_SFINAE_TEST(none_of);28 29static_assert(sfinae_test_none_of<int, int*, int*, bool (*)(int)>);30static_assert(!sfinae_test_none_of<std::execution::parallel_policy, int*, int*, bool (*)(int)>);31 32template <class Iter>33struct Test {34 template <class Policy>35 void operator()(Policy&& policy) {36 int a[] = {1, 2, 3, 4, 5, 6, 7, 8};37 // simple test38 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i > 9; }));39 assert(!std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i >= 8; }));40 41 // check that an empty range works42 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a)), [](int) { return false; }));43 44 // check that true is returned if no element satisfies the condition45 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i == 9; }));46 47 // check that false is returned if only one elements satisfies the condition48 assert(!std::none_of(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i == 1; }));49 50 // check that a one-element range works51 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a) + 1), [](int i) { return i != 1; }));52 53 // check that a two-element range works54 assert(std::none_of(policy, Iter(std::begin(a)), Iter(std::begin(a) + 2), [](int i) { return i > 2; }));55 56 // check that a large number of elements works57 std::vector<int> vec(100);58 std::fill(vec.begin(), vec.end(), 3);59 assert(std::none_of(policy, Iter(vec.data()), Iter(vec.data() + vec.size()), [](int i) { return i != 3; }));60 }61};62 63int main(int, char**) {64 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});65 66 return 0;67}68