76 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// ForwardIterator find_if_not(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(find_if_not);28 29static_assert(sfinae_test_find_if_not<int, int*, int*, bool (*)(int)>);30static_assert(!sfinae_test_find_if_not<std::execution::parallel_policy, int*, int*, 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 38 // simple test39 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i != 3; })) ==40 a + 2);41 42 // check that last is returned if no element matches43 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i != 0; })) ==44 std::end(a));45 46 // check that the first element is returned47 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::end(a)), [](int i) { return i != 1; })) ==48 std::begin(a));49 50 // check that an empty range works51 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::begin(a)), [](int i) { return i != 1; })) ==52 std::begin(a));53 54 // check that a one-element range works55 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::begin(a) + 1), [](int i) { return i != 1; })) ==56 std::begin(a));57 58 // check that a two-element range works59 assert(base(std::find_if_not(policy, Iter(std::begin(a)), Iter(std::begin(a) + 2), [](int i) { return i != 2; })) ==60 std::begin(a) + 1);61 62 // check that a large number of elements works63 std::vector<int> vec(200, 4);64 vec[176] = 5;65 assert(base(std::find_if_not(policy, Iter(std::data(vec)), Iter(std::data(vec) + std::size(vec)), [](int i) {66 return i != 5;67 })) == std::data(vec) + 176);68 }69};70 71int main(int, char**) {72 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{});73 74 return 0;75}76