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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <istream>
// template <class charT, class traits = char_traits<charT> >
// class basic_istream;
// void swap(basic_istream& rhs);
#include <istream>
#include <cassert>
template <class CharT>
struct testbuf
: public std::basic_streambuf<CharT>
{
testbuf() {}
};
template <class CharT>
struct test_istream
: public std::basic_istream<CharT>
{
typedef std::basic_istream<CharT> base;
test_istream(testbuf<CharT>* sb) : base(sb) {}
void swap(test_istream& s) {base::swap(s);}
};
int main()
{
{
testbuf<char> sb1;
testbuf<char> sb2;
test_istream<char> is1(&sb1);
test_istream<char> is2(&sb2);
is1.swap(is2);
assert(is1.rdbuf() == &sb1);
assert(is1.tie() == 0);
assert(is1.fill() == ' ');
assert(is1.rdstate() == is1.goodbit);
assert(is1.exceptions() == is1.goodbit);
assert(is1.flags() == (is1.skipws | is1.dec));
assert(is1.precision() == 6);
assert(is1.getloc().name() == "C");
assert(is2.rdbuf() == &sb2);
assert(is2.tie() == 0);
assert(is2.fill() == ' ');
assert(is2.rdstate() == is2.goodbit);
assert(is2.exceptions() == is2.goodbit);
assert(is2.flags() == (is2.skipws | is2.dec));
assert(is2.precision() == 6);
assert(is2.getloc().name() == "C");
}
{
testbuf<wchar_t> sb1;
testbuf<wchar_t> sb2;
test_istream<wchar_t> is1(&sb1);
test_istream<wchar_t> is2(&sb2);
is1.swap(is2);
assert(is1.rdbuf() == &sb1);
assert(is1.tie() == 0);
assert(is1.fill() == ' ');
assert(is1.rdstate() == is1.goodbit);
assert(is1.exceptions() == is1.goodbit);
assert(is1.flags() == (is1.skipws | is1.dec));
assert(is1.precision() == 6);
assert(is1.getloc().name() == "C");
assert(is2.rdbuf() == &sb2);
assert(is2.tie() == 0);
assert(is2.fill() == ' ');
assert(is2.rdstate() == is2.goodbit);
assert(is2.exceptions() == is2.goodbit);
assert(is2.flags() == (is2.skipws | is2.dec));
assert(is2.precision() == 6);
assert(is2.getloc().name() == "C");
}
}
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