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libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
Chandler Carruth 7c3769df62 Update more file headers across all of the LLVM projects in the monorepo
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351648 91177308-0d34-0410-b5e6-96231b3b80d8
2019-01-19 10:56:40 +00:00

228 lines
7.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string(const basic_string<charT,traits,Allocator>& str,
// size_type pos, size_type n,
// const Allocator& a = Allocator());
//
// basic_string(const basic_string<charT,traits,Allocator>& str,
// size_type pos,
// const Allocator& a = Allocator());
#include <string>
#include <stdexcept>
#include <algorithm>
#include <vector>
#include <scoped_allocator>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"
template <class S>
void
test(S str, unsigned pos)
{
typedef typename S::traits_type T;
typedef typename S::allocator_type A;
if (pos <= str.size())
{
S s2(str, pos);
LIBCPP_ASSERT(s2.__invariants());
typename S::size_type rlen = str.size() - pos;
assert(s2.size() == rlen);
assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
assert(s2.get_allocator() == A());
assert(s2.capacity() >= s2.size());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
else
{
try
{
S s2(str, pos);
assert(false);
}
catch (std::out_of_range&)
{
assert(pos > str.size());
}
}
#endif
}
template <class S>
void
test(S str, unsigned pos, unsigned n)
{
typedef typename S::traits_type T;
typedef typename S::allocator_type A;
if (pos <= str.size())
{
S s2(str, pos, n);
LIBCPP_ASSERT(s2.__invariants());
typename S::size_type rlen = std::min<typename S::size_type>(str.size() - pos, n);
assert(s2.size() == rlen);
assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
assert(s2.get_allocator() == A());
assert(s2.capacity() >= s2.size());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
else
{
try
{
S s2(str, pos, n);
assert(false);
}
catch (std::out_of_range&)
{
assert(pos > str.size());
}
}
#endif
}
template <class S>
void
test(S str, unsigned pos, unsigned n, const typename S::allocator_type& a)
{
typedef typename S::traits_type T;
if (pos <= str.size())
{
S s2(str, pos, n, a);
LIBCPP_ASSERT(s2.__invariants());
typename S::size_type rlen = std::min<typename S::size_type>(str.size() - pos, n);
assert(s2.size() == rlen);
assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
assert(s2.get_allocator() == a);
assert(s2.capacity() >= s2.size());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
else
{
try
{
S s2(str, pos, n, a);
assert(false);
}
catch (std::out_of_range&)
{
assert(pos > str.size());
}
}
#endif
}
#if TEST_STD_VER >= 11
#ifndef TEST_HAS_NO_EXCEPTIONS
void test2583()
{ // LWG #2583
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > StringA;
std::vector<StringA, std::scoped_allocator_adaptor<test_allocator<StringA>>> vs;
StringA s{"1234"};
vs.emplace_back(s, 2);
try { vs.emplace_back(s, 5); }
catch (const std::out_of_range&) { return; }
assert(false);
}
#endif
#endif
int main()
{
{
typedef test_allocator<char> A;
typedef std::basic_string<char, std::char_traits<char>, A> S;
test(S(A(3)), 0);
test(S(A(3)), 1);
test(S("1", A(5)), 0);
test(S("1", A(5)), 1);
test(S("1", A(5)), 2);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 0);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 5);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 500);
test(S(A(3)), 0, 0);
test(S(A(3)), 0, 1);
test(S(A(3)), 1, 0);
test(S(A(3)), 1, 1);
test(S(A(3)), 1, 2);
test(S("1", A(5)), 0, 0);
test(S("1", A(5)), 0, 1);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100);
test(S(A(3)), 0, 0, A(4));
test(S(A(3)), 0, 1, A(4));
test(S(A(3)), 1, 0, A(4));
test(S(A(3)), 1, 1, A(4));
test(S(A(3)), 1, 2, A(4));
test(S("1", A(5)), 0, 0, A(6));
test(S("1", A(5)), 0, 1, A(6));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0, A(8));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1, A(8));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10, A(8));
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100, A(8));
}
#if TEST_STD_VER >= 11
{
typedef min_allocator<char> A;
typedef std::basic_string<char, std::char_traits<char>, A> S;
test(S(A()), 0);
test(S(A()), 1);
test(S("1", A()), 0);
test(S("1", A()), 1);
test(S("1", A()), 2);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 0);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 5);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 500);
test(S(A()), 0, 0);
test(S(A()), 0, 1);
test(S(A()), 1, 0);
test(S(A()), 1, 1);
test(S(A()), 1, 2);
test(S("1", A()), 0, 0);
test(S("1", A()), 0, 1);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 0);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 1);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 10);
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 100);
test(S(A()), 0, 0, A());
test(S(A()), 0, 1, A());
test(S(A()), 1, 0, A());
test(S(A()), 1, 1, A());
test(S(A()), 1, 2, A());
test(S("1", A()), 0, 0, A());
test(S("1", A()), 0, 1, A());
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 0, A());
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 1, A());
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 10, A());
test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 100, A());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
test2583();
#endif
#endif
}