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78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <string>
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// template <class charT, class traits, class Allocator, class Predicate>
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// void erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred);
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#include <string>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "min_allocator.h"
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template <class S, class Pred>
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void
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test0(S s, Pred p, S expected)
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{
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ASSERT_SAME_TYPE(void, decltype(std::erase_if(s, p)));
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std::erase_if(s, p);
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LIBCPP_ASSERT(s.__invariants());
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assert(s == expected);
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}
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template <typename S>
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void test()
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{
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auto isA = [](auto ch) { return ch == 'a';};
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auto isB = [](auto ch) { return ch == 'b';};
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auto isC = [](auto ch) { return ch == 'c';};
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auto isD = [](auto ch) { return ch == 'd';};
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auto True = [](auto) { return true; };
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auto False = [](auto) { return false; };
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test0(S(""), isA, S(""));
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test0(S("a"), isA, S(""));
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test0(S("a"), isB, S("a"));
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test0(S("ab"), isA, S("b"));
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test0(S("ab"), isB, S("a"));
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test0(S("ab"), isC, S("ab"));
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test0(S("aa"), isA, S(""));
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test0(S("aa"), isC, S("aa"));
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test0(S("abc"), isA, S("bc"));
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test0(S("abc"), isB, S("ac"));
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test0(S("abc"), isC, S("ab"));
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test0(S("abc"), isD, S("abc"));
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test0(S("aab"), isA, S("b"));
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test0(S("aab"), isB, S("aa"));
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test0(S("aab"), isC, S("aab"));
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test0(S("abb"), isA, S("bb"));
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test0(S("abb"), isB, S("a"));
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test0(S("abb"), isC, S("abb"));
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test0(S("aaa"), isA, S(""));
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test0(S("aaa"), isB, S("aaa"));
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test0(S("aba"), False, S("aba"));
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test0(S("aba"), True, S(""));
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}
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int main(int, char**)
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{
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test<std::string>();
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test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>> ();
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test<std::basic_string<char, std::char_traits<char>, test_allocator<char>>> ();
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return 0;
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}
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