Tacet
c77cdbac9b
Extend `std::basic_string` tests to cover more buffer situations and length in general, particularly non-SSO cases after SSO test cases (changing buffers). This commit is a side effect of working on tests for ASan annotations. Related PR: https://github.com/llvm/llvm-project/pull/72677
84 lines
2.7 KiB
C++
84 lines
2.7 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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// <string>
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// basic_string<charT,traits,Allocator>&
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// append(const basic_string<charT,traits>& str); // constexpr since C++20
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "min_allocator.h"
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template <class S>
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TEST_CONSTEXPR_CXX20 void test(S s, S str, S expected) {
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s.append(str);
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LIBCPP_ASSERT(s.__invariants());
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assert(s == expected);
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}
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template <class S>
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TEST_CONSTEXPR_CXX20 void test_string() {
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test(S(), S(), S());
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test(S(), S("12345"), S("12345"));
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test(S(), S("1234567890"), S("1234567890"));
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test(S(), S("12345678901234567890"), S("12345678901234567890"));
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test(S("12345"), S(), S("12345"));
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test(S("12345"), S("12345"), S("1234512345"));
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test(S("12345"), S("1234567890"), S("123451234567890"));
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test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
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test(S("1234567890"), S(), S("1234567890"));
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test(S("1234567890"), S("12345"), S("123456789012345"));
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test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
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test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
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test(S("12345678901234567890"), S(), S("12345678901234567890"));
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test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
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test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
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test(S("12345678901234567890"), S("12345678901234567890"), S("1234567890123456789012345678901234567890"));
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// Starting from long string (no SSO)
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test(S("123456789012345678901234567890"), S(), S("123456789012345678901234567890"));
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test(S("123456789012345678901234567890"), S("12345"), S("12345678901234567890123456789012345"));
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test(S("123456789012345678901234567890"), S("1234567890"), S("1234567890123456789012345678901234567890"));
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test(S("123456789012345678901234567890"),
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S("12345678901234567890"),
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S("12345678901234567890123456789012345678901234567890"));
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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test_string<std::string>();
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#if TEST_STD_VER >= 11
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test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
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#endif
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#if TEST_STD_VER >= 11
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{ // LWG 2946
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std::string s;
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s.append({"abc", 1});
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assert(s.size() == 1);
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assert(s == "a");
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}
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#endif
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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