#include <istream>
#include <string>
#include <fstream>
#include <limits>
#include <testsuite_hooks.h>
using namespace std;
wstring
prepare(wstring::size_type len, unsigned nchunks, wchar_t delim)
{
wstring ret;
for (unsigned i = 0; i < nchunks; ++i)
{
for (wstring::size_type j = 0; j < len; ++j)
ret.push_back(L'a' + rand() % 26);
len *= 2;
ret.push_back(delim);
}
return ret;
}
void
check(wistream& stream, const wstring& str, unsigned nchunks, wchar_t delim)
{
bool test __attribute__((unused)) = true;
wstring::size_type index = 0, index_new = 0;
unsigned n = 0;
while (stream.ignore(numeric_limits<streamsize>::max(), delim).good())
{
index_new = str.find(delim, index);
VERIFY( stream.gcount() == index_new - index + 1 );
index = index_new + 1;
++n;
}
VERIFY( stream.gcount() == 0 );
VERIFY( !stream.fail() );
VERIFY( n == nchunks );
}
void test01()
{
const char filename[] = "wistream_ignore.txt";
const wchar_t delim = L'|';
const unsigned nchunks = 10;
const wstring data = prepare(555, nchunks, delim);
wofstream ofstrm;
ofstrm.open(filename);
ofstrm.write(data.data(), data.size());
ofstrm.close();
wifstream ifstrm;
ifstrm.open(filename);
check(ifstrm, data, nchunks, delim);
ifstrm.close();
}
int main()
{
test01();
return 0;
}