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//===----------------------------------------------------------------------===//
//
// 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>
// template<class charT, class traits, class Allocator>
// basic_istream<charT,traits>&
// getline(basic_istream<charT,traits>& is,
// basic_string<charT,traits,Allocator>& str);
#include <cassert>
#include <sstream>
#include <string>
#include "make_string.h"
#include "min_allocator.h"
#include "stream_types.h"
#include "test_macros.h"
template <class CharT, class Alloc, class Stream, class Streambuf>
void test() {
using string_type = std::basic_string<CharT, std::char_traits<CharT>, Alloc>;
using stream_type = std::basic_istream<CharT>;
using streambuf_type = Streambuf;
{
streambuf_type sb(MAKE_CSTRING(CharT, " abc\n def\n ghij"));
stream_type in(&sb);
string_type s(MAKE_CSTRING(CharT, "initial text"));
std::getline(in, s);
assert(in.good());
assert(s == MAKE_CSTRING(CharT, " abc"));
std::getline(in, s);
assert(in.good());
assert(s == MAKE_CSTRING(CharT, " def"));
std::getline(in, s);
assert(in.eof());
assert(s == MAKE_CSTRING(CharT, " ghij"));
}
#ifndef TEST_HAS_NO_EXCEPTIONS
{
streambuf_type sb(MAKE_CSTRING(CharT, "hello"));
stream_type is(&sb);
is.exceptions(std::ios_base::eofbit);
string_type s;
bool threw = false;
try {
std::getline(is, s);
} catch (std::ios::failure const&) {
threw = true;
}
assert(!is.bad());
assert(!is.fail());
assert(is.eof());
assert(threw);
assert(s == MAKE_CSTRING(CharT, "hello"));
}
{
streambuf_type sb(MAKE_CSTRING(CharT, ""));
stream_type is(&sb);
is.exceptions(std::ios_base::failbit);
string_type s;
bool threw = false;
try {
std::getline(is, s);
} catch (std::ios::failure const&) {
threw = true;
}
assert(!is.bad());
assert(is.fail());
assert(is.eof());
assert(threw);
assert(s == MAKE_CSTRING(CharT, ""));
}
#endif // TEST_HAS_NO_EXCEPTIONS
}
template <template <class> class Alloc>
void test_alloc() {
test<char, Alloc<char>, std::basic_istringstream<char>, std::basic_stringbuf<char> >();
test<char, Alloc<char>, std::basic_istringstream<char>, non_buffering_streambuf<char> >();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t, Alloc<wchar_t>, std::basic_istringstream<wchar_t>, std::basic_stringbuf<wchar_t> >();
test<wchar_t, Alloc<wchar_t>, std::basic_istringstream<wchar_t>, non_buffering_streambuf<wchar_t> >();
#endif
}
void test_tiny_allocator() {
{
std::string in_str =
"this is a too long line for the string that has to be longer because the implementation is broken\n";
std::istringstream iss(in_str);
std::basic_string<char, std::char_traits<char>, tiny_size_allocator<40, char> > str;
std::getline(iss, str);
assert(iss.rdstate() & std::ios::failbit);
assert(str == in_str.substr(0, str.max_size()).c_str());
}
{
std::string in_str =
"this is a too long line for the string that has to be longer because the implementation is broken";
std::istringstream iss(in_str);
std::basic_string<char, std::char_traits<char>, tiny_size_allocator<40, char> > str;
std::getline(iss, str);
assert(iss.rdstate() & std::ios::failbit);
assert(str == in_str.substr(0, str.max_size()).c_str());
}
}
int main(int, char**) {
test_alloc<std::allocator>();
#if TEST_STD_VER >= 11
test_alloc<min_allocator>();
#endif
test_tiny_allocator();
return 0;
}
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