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#include <algorithm>
#if !defined (STLPORT) || !defined (_STLP_USE_NO_IOSTREAMS)
# include <sstream>
# include <functional>
# include <iterator>
# include <vector>
# include <string>
#endif
#include "cppunit/cppunit_proxy.h"
#if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)
using namespace std;
#endif
//
// TestCase class
//
class IStreamIteratorTest : public CPPUNIT_NS::TestCase
{
CPPUNIT_TEST_SUITE(IStreamIteratorTest);
#if defined (STLPORT) && defined (_STLP_USE_NO_IOSTREAMS)
CPPUNIT_IGNORE;
#endif
CPPUNIT_TEST(istmit1);
#if !defined (STLPORT) || defined (_STLP_NO_EXTENSIONS)
CPPUNIT_IGNORE;
#endif
CPPUNIT_TEST(copy_n_test);
CPPUNIT_TEST_SUITE_END();
protected:
void istmit1();
void copy_n_test();
};
CPPUNIT_TEST_SUITE_REGISTRATION(IStreamIteratorTest);
#if !defined (STLPORT) || !defined (_STLP_USE_NO_IOSTREAMS)
# if !defined (STLPORT) || !defined (_STLP_LIMITED_DEFAULT_TEMPLATES)
typedef istream_iterator<char> istream_char_ite;
typedef istream_iterator<int> istream_int_ite;
typedef istream_iterator<string> istream_string_ite;
# else
typedef istream_iterator<char, ptrdiff_t> istream_char_ite;
typedef istream_iterator<int, ptrdiff_t> istream_int_ite;
typedef istream_iterator<string, ptrdiff_t> istream_string_ite;
# endif
#endif
//
// tests implementation
//
void IStreamIteratorTest::istmit1()
{
#if !defined (STLPORT) || !defined (_STLP_USE_NO_IOSTREAMS)
const char* buff = "MyString";
istringstream istr(buff);
char buffer[100];
size_t i = 0;
istr.unsetf(ios::skipws); // Disable white-space skipping.
istream_char_ite s(istr), meos;
while (!(s == meos) &&
//*TY 01/10/1999 - added end of stream check
// NOTE operator!= should not be used here ifndef _STLP_FUNCTION_TMPL_PARTIAL_ORDER
(*s != '\n') &&
(i < sizeof(buffer) / sizeof(buffer[0]))) { //*TY 07/28/98 - added index check
buffer[i++] = *s++;
}
buffer[i] = '\0'; // Null terminate buffer.
CPPUNIT_ASSERT(!strcmp(buffer, buff));
{
istringstream empty_istr;
CPPUNIT_ASSERT( istream_char_ite(empty_istr) == istream_char_ite() );
}
#endif
}
void IStreamIteratorTest::copy_n_test()
{
#if defined (STLPORT) && !defined (_STLP_NO_EXTENSIONS) && !defined (_STLP_USE_NO_IOSTREAMS)
//This test check that no character is lost while reading the istream
//through a istream_iterator.
{
istringstream istr("aabbcd");
string chars;
istream_char_ite ite = copy_n(copy_n(istream_char_ite(istr),
2, back_inserter(chars)).first,
2, back_inserter(chars)).first;
CPPUNIT_ASSERT( chars == "aabb" );
copy_n(ite, 2, back_inserter(chars));
CPPUNIT_ASSERT( chars == "aabbcd" );
}
{
istringstream istr("11 22 AA BB 33 44 CC DD");
vector<int> ints;
vector<string> strings;
copy_n(istream_int_ite(istr), 2, back_inserter(ints));
CPPUNIT_ASSERT( ints.size() == 2 );
CPPUNIT_ASSERT( ints[0] == 11 );
CPPUNIT_ASSERT( ints[1] == 22 );
ints.clear();
istr.clear();
copy_n(istream_string_ite(istr), 2, back_inserter(strings));
CPPUNIT_ASSERT( strings.size() == 2 );
CPPUNIT_ASSERT( strings[0] == "AA" );
CPPUNIT_ASSERT( strings[1] == "BB" );
strings.clear();
istr.clear();
/* The following code cannot work, '33' is extracted as a string
* in the previous copy_n call, this value is returned in the pair
* returned by copy_n but is lost as this istream_iterator is not used.
* copy_n and istream_iterator can only be combined safely if:
* - you always extract the same type of istream_iterator and you always reuse
* the istream_iterator returned by copy_n (see previous test with "aabbcd")
* - you extract different type of object and no object is convertible to an other
* as in this current test when you extract int and string (when you extract ints
* again it fails as int can be converted to strings.
*
copy_n(istream_int_ite(istr), 2, back_inserter(ints));
CPPUNIT_ASSERT( ints.size() == 2 );
CPPUNIT_ASSERT( ints[0] == 33 );
CPPUNIT_ASSERT( ints[1] == 44 );
istr.clear();
copy_n(istream_string_ite(istr), 2, back_inserter(strings));
CPPUNIT_ASSERT( strings.size() == 2 );
CPPUNIT_ASSERT( strings[0] == "CC" );
CPPUNIT_ASSERT( strings[1] == "DD" );
*/
}
{
istringstream is("1 2 3 4 5 6 7 8 9 10");
vector<int> ints;
istream_iterator<int> itr(is);
itr = copy_n(itr, 0, back_inserter(ints)).first;
CPPUNIT_ASSERT( ints.empty() );
itr = copy_n(itr, -1, back_inserter(ints)).first;
CPPUNIT_ASSERT( ints.empty() );
itr = copy_n(itr, 2, back_inserter(ints)).first;
CPPUNIT_ASSERT( ints.size() == 2 );
CPPUNIT_ASSERT( ints[0] == 1 );
CPPUNIT_ASSERT( ints[1] == 2 );
itr = copy_n(itr, 2, back_inserter(ints)).first;
CPPUNIT_ASSERT( ints.size() == 4 );
CPPUNIT_ASSERT( ints[2] == 3 );
CPPUNIT_ASSERT( ints[3] == 4 );
itr = copy_n(itr, 2, back_inserter(ints)).first;
CPPUNIT_ASSERT( ints.size() == 6 );
CPPUNIT_ASSERT( ints[4] == 5 );
CPPUNIT_ASSERT( ints[5] == 6 );
}
#endif
}
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