//  path_test program  -------------------------------------------------------//

//  Copyright Beman Dawes 2002
//  Copyright Vladimir Prus 2002

//  Use, modification, and distribution is subject to the Boost Software
//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt)

//  See library home page at http://www.boost.org/libs/filesystem

//  basic_path's stem(), extension(), and replace_extension() tests are based
//  on basename(), extension(), and change_extension() tests from the original
//  convenience_test.cpp by Vladimir Prus.

//  See deprecated_test for tests of deprecated features
#ifndef BOOST_FILESYSTEM_NO_DEPRECATED 
# define BOOST_FILESYSTEM_NO_DEPRECATED
#endif
#ifndef BOOST_SYSTEM_NO_DEPRECATED 
# define BOOST_SYSTEM_NO_DEPRECATED
#endif

#include <boost/filesystem/operations.hpp>
#include <boost/utility.hpp>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <cstring>
#include <cassert>

namespace fs = boost::filesystem;
using boost::filesystem::path;


#include <boost/detail/lightweight_test.hpp>

#define PATH_CHECK( a, b ) check( a, b, __LINE__ )
#define DIR_CHECK( a, b ) check_dir( a, b, __LINE__ )
#define CHECK_EQUAL( a,b ) check_equal( a, b, __LINE__ )


namespace
{
  std::string platform( BOOST_PLATFORM );

  void check( const fs::path & source,
              const std::string & expected, int line )
  {
    if ( source.string()== expected ) return;

    ++::boost::detail::test_errors();

    std::cout << '(' << line << ") source.string(): \"" << source.string()
              << "\" != expected: \"" << expected
              << "\"" << std::endl;
  }

  void check_dir( const fs::path & source,
              const std::string & expected, int line )
  {
    if ( source.directory_string()== expected ) return;

    ++::boost::detail::test_errors();

    std::cout << '(' << line << ") source.directory_string(): \""
              << source.directory_string()
              << "\" != expected: \"" << expected
              << "\"" << std::endl;
  }

  void check_equal( const std::string & value,
              const std::string & expected, int line )
  {
    if ( value == expected ) return;

    ++::boost::detail::test_errors();

    std::cout << '(' << line << ") value: \"" << value
              << "\" != expected: \"" << expected
              << "\"" << std::endl;
  }


  void exception_tests()
  {
    const std::string str_1("string-1");
    boost::system::error_code ec( 12345, boost::system::system_category());
    try { throw fs::filesystem_error( str_1, ec ); }
    catch ( const fs::filesystem_error & ex )
    {
      //std::cout << ex.what() << "*" << std::endl;
      //BOOST_TEST( std::strcmp( ex.what(),
      //  "string-1: Unknown error" ) == 0 );
      BOOST_TEST( ex.code() == ec );
    }

    try { throw fs::filesystem_error( str_1, "p1", "p2", ec ); }
    catch ( const fs::filesystem_error & ex )
    {
      //std::cout << ex.what() << "*" << std::endl;                    
      //BOOST_TEST( std::strcmp( ex.what(),
      //  "string-1: Unknown error: \"p1\", \"p2\"" ) == 0 );
      BOOST_TEST( ex.code() == ec );
      BOOST_TEST( ex.path1().string() == "p1" );
      BOOST_TEST( ex.path2().string() == "p2" );
    }
  }


  //  name_function_tests  ---------------------------------------------------//

  void name_function_tests()
  {
    std::cout << "name_function_tests..." << std::endl;

    BOOST_TEST( fs::portable_posix_name( std::string( "x" ) ) );
    BOOST_TEST( fs::windows_name( std::string( "x" ) ) );
    BOOST_TEST( fs::portable_name( std::string( "x" ) ) );
    BOOST_TEST( fs::portable_directory_name( std::string( "x" ) ) );
    BOOST_TEST( fs::portable_file_name( std::string( "x" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( "." ) ) );
    BOOST_TEST( fs::windows_name( std::string( "." ) ) );
    BOOST_TEST( fs::portable_name( std::string( "." ) ) );
    BOOST_TEST( fs::portable_directory_name( std::string( "." ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "." ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( ".." ) ) );
    BOOST_TEST( fs::windows_name( std::string( ".." ) ) );
    BOOST_TEST( fs::portable_name( std::string( ".." ) ) );
    BOOST_TEST( fs::portable_directory_name( std::string( ".." ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( ".." ) ) );

    BOOST_TEST( !fs::native( std::string( "" ) ) );
    BOOST_TEST( !fs::portable_posix_name( std::string( "" ) ) );
    BOOST_TEST( !fs::windows_name( std::string( "" ) ) );
    BOOST_TEST( !fs::portable_name( std::string( "" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "" ) ) );

    BOOST_TEST( !fs::native( std::string( " " ) ) );
    BOOST_TEST( !fs::portable_posix_name( std::string( " " ) ) );
    BOOST_TEST( !fs::windows_name( std::string( " " ) ) );
    BOOST_TEST( !fs::portable_name( std::string( " " ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( " " ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( " " ) ) );

    BOOST_TEST( !fs::portable_posix_name( std::string( ":" ) ) );
    BOOST_TEST( !fs::windows_name( std::string( ":" ) ) );
    BOOST_TEST( !fs::portable_name( std::string( ":" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( ":" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( ":" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( "-" ) ) );
    BOOST_TEST( fs::windows_name( std::string( "-" ) ) );
    BOOST_TEST( !fs::portable_name( std::string( "-" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "-" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "-" ) ) );

    BOOST_TEST( !fs::portable_posix_name( std::string( "foo bar" ) ) );
    BOOST_TEST( fs::windows_name( std::string( "foo bar" ) ) );
    BOOST_TEST( !fs::windows_name( std::string( " bar" ) ) );
    BOOST_TEST( !fs::windows_name( std::string( "foo " ) ) );
    BOOST_TEST( !fs::portable_name( std::string( "foo bar" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "foo bar" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "foo bar" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( "foo.bar" ) ) );
    BOOST_TEST( fs::windows_name( std::string( "foo.bar" ) ) );
    BOOST_TEST( fs::portable_name( std::string( "foo.bar" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "foo.bar" ) ) );
    BOOST_TEST( fs::portable_file_name( std::string( "foo.bar" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( "foo.barf" ) ) );
    BOOST_TEST( fs::windows_name( std::string( "foo.barf" ) ) );
    BOOST_TEST( fs::portable_name( std::string( "foo.barf" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "foo.barf" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "foo.barf" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( ".foo" ) ) );
    BOOST_TEST( fs::windows_name( std::string( ".foo" ) ) );
    BOOST_TEST( !fs::portable_name( std::string( ".foo" ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( ".foo" ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( ".foo" ) ) );

    BOOST_TEST( fs::portable_posix_name( std::string( "foo." ) ) );
    BOOST_TEST( !fs::windows_name( std::string( "foo." ) ) );
    BOOST_TEST( !fs::portable_name( std::string( "foo." ) ) );
    BOOST_TEST( !fs::portable_directory_name( std::string( "foo." ) ) );
    BOOST_TEST( !fs::portable_file_name( std::string( "foo." ) ) );
  }

} // unnamed namespace

int main( int, char*[] )
{
  // The choice of platform is make at runtime rather than compile-time
  // so that compile errors for all platforms will be detected even though
  // only the current platform is runtime tested.
  platform = ( platform == "Win32" || platform == "Win64" || platform == "Cygwin" )
               ? "Windows"
               : "POSIX";
  std::cout << "Platform is " << platform << '\n';

  path p1( "fe/fi/fo/fum" );
  path p2( p1 );
  path p3;
  BOOST_TEST( p1.string() != p3.string() );

  // check each overload
  BOOST_TEST( p1 != p3 );
  BOOST_TEST( p1 != p3.string() );
  BOOST_TEST( p1 != p3.string().c_str() );
  BOOST_TEST( p1.string() != p3 );
  BOOST_TEST( p1.string().c_str() != p3 );

  p3 = p2;
  BOOST_TEST( p1.string() == p3.string() );

  // check each overload
  BOOST_TEST( p1 == p3 );
  BOOST_TEST( p1 == p3.string() );
  BOOST_TEST( p1 == p3.string().c_str() );
  BOOST_TEST( p1.string() == p3 );
  BOOST_TEST( p1.string().c_str() == p3 );

  path p4( "foobar" );
  BOOST_TEST( p4.string() == "foobar" );
  p4 = p4; // self-assignment
  BOOST_TEST( p4.string() == "foobar" );

  if ( platform == "Windows" )
  {
    path p10 ("c:\\file");
    path p11 ("c:/file");
    // check each overload
    BOOST_TEST( p10.string() == p11.string() );
    BOOST_TEST( p10 == p11 );
    BOOST_TEST( p10 == p11.string() );
    BOOST_TEST( p10 == p11.string().c_str() );
    BOOST_TEST( p10.string() == p11 );
    BOOST_TEST( p10.string().c_str() == p11 );
    BOOST_TEST( p10 == "c:\\file" );
    BOOST_TEST( p10 == "c:/file" );
    BOOST_TEST( p11 == "c:\\file" );
    BOOST_TEST( p11 == "c:/file" );
    BOOST_TEST( "c:\\file" == p10 );
    BOOST_TEST( "c:/file" == p10 );
    BOOST_TEST( "c:\\file" == p11 );
    BOOST_TEST( "c:/file" == p11 );
  }

  exception_tests();
  name_function_tests();

  // These verify various overloads don't cause compiler errors

  fs::exists( p1 );
  fs::exists( "foo" );
  fs::exists( std::string( "foo" ) );

  fs::exists( p1 / path( "foo" ) );
  fs::exists( p1 / "foo" );
  fs::exists( p1 / std::string( "foo" ) );

  fs::exists( "foo" / p1 );
  fs::exists( std::string( "foo" ) / p1 );

  p4 /= path( "foo" );
  p4 /= "foo";
  p4 /= std::string( "foo" );

  path p5;
  std::string s1( "//:somestring" );

  // verify deprecated names still available

# ifndef BOOST_FILESYSTEM_NO_DEPRECATED

  p1.branch_path();
  p1.leaf();
  path p_remove_leaf;
  p_remove_leaf.remove_leaf();

# endif


# ifndef BOOST_NO_MEMBER_TEMPLATES

  // check the path member templates
  p5.assign( s1.begin(), s1.end() );

  PATH_CHECK( p5, "somestring" );
  p5 = s1;
  PATH_CHECK( p5, "somestring" );

  BOOST_TEST( p4.string() == path( p4.string().begin(), p4.string().end() ).string() );

  char c0 = 'a';
  p5.assign( &c0, &c0 );
  PATH_CHECK( p5, "" );
  p5 /= "";
  PATH_CHECK( p5, "" );
  p5 /= "foo/bar";
  PATH_CHECK( p5, "foo/bar" );
  p5.append( &c0, &c0 );
  PATH_CHECK( p5, "foo/bar" );
  p5 /= "";
  PATH_CHECK( p5, "foo/bar" );
  char bf[]= "bar/foo";
  p5.assign( bf, bf + sizeof(bf) ); 
  PATH_CHECK( p5, bf );
  p5.append( bf, bf + sizeof(bf) ); 
  PATH_CHECK( p5, "bar/foo/bar/foo" );

  // this code, courtesy of David Whetstone, detected a now fixed bug that
  // derefereced the end iterator (assuming debug build with checked itors)
  std::vector<char> v1;
  p5.assign( v1.begin(), v1.end() );
  std::string s2( v1.begin(), v1.end() );
  PATH_CHECK( p5, s2 );
  p5.assign( s1.begin(), s1.begin() + 1 );
  PATH_CHECK( p5, "/" );

# endif
  path clear_path( "foo" );

  BOOST_TEST( !clear_path.empty() );
  clear_path.clear();
  BOOST_TEST( clear_path.empty() );

  BOOST_TEST( p1 != p4 );
  BOOST_TEST( p1.string() == p2.string() );
  BOOST_TEST( p1.string() == p3.string() );
  BOOST_TEST( path( "foo" ).filename() == "foo" );
  BOOST_TEST( path( "foo" ).parent_path().string() == "" );
  BOOST_TEST( p1.filename() == "fum" );
  BOOST_TEST( p1.parent_path().string() == "fe/fi/fo" );
  BOOST_TEST( path( "" ).empty() == true );
  BOOST_TEST( path( "foo" ).empty() == false );

  PATH_CHECK( "", "" );

  PATH_CHECK( "foo", "foo" );
  PATH_CHECK( "f", "f" );

  PATH_CHECK( "foo/", "foo/" );
  PATH_CHECK( "f/", "f/" );
  PATH_CHECK( "foo/..", "foo/.." );
  PATH_CHECK( "foo/../", "foo/../" );
  PATH_CHECK( "foo/bar/../..", "foo/bar/../.." );
  PATH_CHECK( "foo/bar/../../", "foo/bar/../../" );
  PATH_CHECK( path("") / "foo", "foo" );
  PATH_CHECK( path("") / "foo/", "foo/" );
  PATH_CHECK( path("foo") / "", "foo" );
  PATH_CHECK( path( "/" ), "/" );
  PATH_CHECK( path( "/" ) / "", "/" );
  PATH_CHECK( path( "/f" ), "/f" );

  PATH_CHECK( "/foo", "/foo" );
  PATH_CHECK( path("") / "/foo", "/foo" );
  PATH_CHECK( path("/foo") / "", "/foo" );

  if ( platform == "Windows" )
  {
    PATH_CHECK( path("c:") / "foo", "c:foo" );
    PATH_CHECK( path("c:") / "/foo", "c:/foo" );
  }

  if ( platform == "Windows" )
  {
    PATH_CHECK( path("c:") / "foo", "c:foo" );
    PATH_CHECK( path("c:") / "/foo", "c:/foo" );
  }

  PATH_CHECK( "foo/bar", "foo/bar" );
  PATH_CHECK( path("foo") / path("bar"), "foo/bar" ); // path arg
  PATH_CHECK( path("foo") / "bar", "foo/bar" );       // const char * arg
  PATH_CHECK( path("foo") / path("woo/bar").filename(), "foo/bar" ); // const std::string & arg
  PATH_CHECK( "foo" / path("bar"), "foo/bar" );

  PATH_CHECK( "a/b", "a/b" );  // probe for length effects
  PATH_CHECK( path("a") / "b", "a/b" );

  PATH_CHECK( "..", ".." );
  PATH_CHECK( path("..") / "", ".." );
  PATH_CHECK( path("") / "..", ".." );

  PATH_CHECK( "../..", "../.." );
  PATH_CHECK( path("..") / ".." , "../.." );

  PATH_CHECK( "/..", "/.." );
  PATH_CHECK( path("/") / ".." , "/.." );

  PATH_CHECK( "/../..", "/../.." );
  PATH_CHECK( path("/..") / ".." , "/../.." );

  PATH_CHECK( "../foo", "../foo" );
  PATH_CHECK( path("..") / "foo" , "../foo" );

  PATH_CHECK( "foo/..", "foo/.." );
  PATH_CHECK( path("foo") / ".." , "foo/.." );
  PATH_CHECK( path( "foo/..bar"), "foo/..bar" );

  PATH_CHECK( "../f", "../f" );
  PATH_CHECK( path("..") / "f" , "../f" );

  PATH_CHECK( "/../f", "/../f" );
  PATH_CHECK( path("/..") / "f" , "/../f" );

  PATH_CHECK( "f/..", "f/.." );
  PATH_CHECK( path("f") / ".." , "f/.." );

  PATH_CHECK( "foo/../..", "foo/../.." );
  PATH_CHECK( path("foo") / ".." / ".." , "foo/../.." );

  PATH_CHECK( "foo/../../..", "foo/../../.." );
  PATH_CHECK( path("foo") / ".." / ".." / ".." , "foo/../../.." );

  PATH_CHECK( "foo/../bar", "foo/../bar" );
  PATH_CHECK( path("foo") / ".." / "bar" , "foo/../bar" );

  PATH_CHECK( "foo/bar/..", "foo/bar/.." );
  PATH_CHECK( path("foo") / "bar" / ".." , "foo/bar/.." );

  PATH_CHECK( "foo/bar/../..", "foo/bar/../.." );
  PATH_CHECK( path("foo") / "bar" / ".." / "..", "foo/bar/../.." );

  PATH_CHECK( "foo/bar/../blah", "foo/bar/../blah" );
  PATH_CHECK( path("foo") / "bar" / ".." / "blah", "foo/bar/../blah" );

  PATH_CHECK( "f/../b", "f/../b" );
  PATH_CHECK( path("f") / ".." / "b" , "f/../b" );

  PATH_CHECK( "f/b/..", "f/b/.." );
  PATH_CHECK( path("f") / "b" / ".." , "f/b/.." );

  PATH_CHECK( "f/b/../a", "f/b/../a" );
  PATH_CHECK( path("f") / "b" / ".." / "a", "f/b/../a" );

  PATH_CHECK( "foo/bar/blah/../..", "foo/bar/blah/../.." );
  PATH_CHECK( path("foo") / "bar" / "blah" / ".." / "..", "foo/bar/blah/../.." );

  PATH_CHECK( "foo/bar/blah/../../bletch", "foo/bar/blah/../../bletch" );
  PATH_CHECK( path("foo") / "bar" / "blah" / ".." / ".." / "bletch", "foo/bar/blah/../../bletch" );

  PATH_CHECK( "...", "..." );
  PATH_CHECK( "....", "...." );
  PATH_CHECK( "foo/...", "foo/..." );
  PATH_CHECK( "abc.", "abc." );
  PATH_CHECK( "abc..", "abc.." );
  PATH_CHECK( "foo/abc.", "foo/abc." );
  PATH_CHECK( "foo/abc..", "foo/abc.." );

  PATH_CHECK( path(".abc"), ".abc" );
  PATH_CHECK( "a.c", "a.c" );
  PATH_CHECK( path("..abc"), "..abc" );
  PATH_CHECK( "a..c", "a..c" );
  PATH_CHECK( path("foo/.abc"), "foo/.abc" );
  PATH_CHECK( "foo/a.c", "foo/a.c" );
  PATH_CHECK( path("foo/..abc"), "foo/..abc" );
  PATH_CHECK( "foo/a..c", "foo/a..c" );

  PATH_CHECK( ".", "." );
  PATH_CHECK( path("") / ".", "." );
  PATH_CHECK( "./foo", "./foo" );
  PATH_CHECK( path(".") / "foo", "./foo" );
  PATH_CHECK( "./..", "./.." );
  PATH_CHECK( path(".") / "..", "./.." );
  PATH_CHECK( "./../foo", "./../foo" );
  PATH_CHECK( "foo/.", "foo/." );
  PATH_CHECK( path("foo") / ".", "foo/." );
  PATH_CHECK( "../.", "../." );
  PATH_CHECK( path("..") / ".", "../." );
  PATH_CHECK( "./.", "./." );
  PATH_CHECK( path(".") / ".", "./." );
  PATH_CHECK( "././.", "././." );
  PATH_CHECK( path(".") / "." / ".", "././." );
  PATH_CHECK( "./foo/.", "./foo/." );
  PATH_CHECK( path(".") / "foo" / ".", "./foo/." );
  PATH_CHECK( "foo/./bar", "foo/./bar" );
  PATH_CHECK( path("foo") / "." / "bar", "foo/./bar" );
  PATH_CHECK( "foo/./.", "foo/./." );
  PATH_CHECK( path("foo") / "." / ".", "foo/./." );
  PATH_CHECK( "foo/./..", "foo/./.." );
  PATH_CHECK( path("foo") / "." / "..", "foo/./.." );
  PATH_CHECK( "foo/./../bar", "foo/./../bar" );
  PATH_CHECK( "foo/../.", "foo/../." );
  PATH_CHECK( path(".") / "." / "..", "././.." );
  PATH_CHECK( "././..", "././.." );
  PATH_CHECK( path(".") / "." / "..", "././.." );
  PATH_CHECK( "./../.", "./../." );
  PATH_CHECK( path(".") / ".." / ".", "./../." );
  PATH_CHECK( ".././.", ".././." );
  PATH_CHECK( path("..") / "." / ".", ".././." );

  // iterator tests

  path itr_ck = "";
  path::const_iterator itr = itr_ck.begin();
  BOOST_TEST( itr == itr_ck.end() );

  itr_ck = "/";
  itr = itr_ck.begin();
  BOOST_TEST( *itr == std::string( "/" ) );
  BOOST_TEST( ++itr == itr_ck.end() );
  BOOST_TEST( *--itr == std::string( "/" ) );

  itr_ck = "foo";
  BOOST_TEST( *itr_ck.begin() == std::string( "foo" ) );
  BOOST_TEST( boost::next( itr_ck.begin() ) == itr_ck.end() );
  BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "foo" ) );
  BOOST_TEST( boost::prior( itr_ck.end() ) == itr_ck.begin() );

  itr_ck = path( "/foo" );
  BOOST_TEST( *itr_ck.begin() == std::string( "/" ) );
  BOOST_TEST( *boost::next( itr_ck.begin() ) == std::string( "foo" ) );
  BOOST_TEST( boost::next(boost::next( itr_ck.begin() )) == itr_ck.end() );
  BOOST_TEST( boost::next( itr_ck.begin() ) == boost::prior( itr_ck.end() ) );
  BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "foo" ) );
  BOOST_TEST( *boost::prior(boost::prior( itr_ck.end() )) == std::string( "/" ) );
  BOOST_TEST( boost::prior(boost::prior( itr_ck.end() )) == itr_ck.begin() );

  itr_ck = "/foo/bar";
  itr = itr_ck.begin();
  BOOST_TEST( *itr == std::string( "/" ) );
  BOOST_TEST( *++itr == std::string( "foo" ) );
  BOOST_TEST( *++itr == std::string( "bar" ) );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "bar" );
  CHECK_EQUAL( *--itr, "foo" );
  CHECK_EQUAL( *--itr, "/" );

  itr_ck = "../f"; // previously failed due to short name bug
  itr = itr_ck.begin();
  CHECK_EQUAL( *itr, ".." );
  CHECK_EQUAL( *++itr, "f" );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "f" );
  CHECK_EQUAL( *--itr, ".." );

  // POSIX says treat "/foo/bar/" as "/foo/bar/."
  itr_ck = "/foo/bar/";
  itr = itr_ck.begin();
  CHECK_EQUAL( *itr, "/" );
  CHECK_EQUAL( *++itr, "foo" );
  CHECK_EQUAL( *++itr, "bar" );
  CHECK_EQUAL( *++itr, "." );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "." );
  CHECK_EQUAL( *--itr, "bar" );
  CHECK_EQUAL( *--itr, "foo" );
  CHECK_EQUAL( *--itr, "/" );

  // POSIX says treat "/f/b/" as "/f/b/."
  itr_ck = "/f/b/";
  itr = itr_ck.begin();
  CHECK_EQUAL( *itr, "/" );
  CHECK_EQUAL( *++itr, "f" );
  CHECK_EQUAL( *++itr, "b" );
  CHECK_EQUAL( *++itr, "." );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "." );
  CHECK_EQUAL( *--itr, "b" );
  CHECK_EQUAL( *--itr, "f" );
  CHECK_EQUAL( *--itr, "/" );

  itr_ck = "//net";
  itr = itr_ck.begin();
  // two leading slashes are permitted by POSIX (as implementation defined),
  // while for Windows it is always well defined (as a network name)
  CHECK_EQUAL( *itr, "//net" );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "//net" );

  itr_ck = "//net/";
  itr = itr_ck.begin();
  CHECK_EQUAL( *itr, "//net" );
  CHECK_EQUAL( *++itr, "/" );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "/" );
  CHECK_EQUAL( *--itr, "//net" );

  itr_ck = "//foo///bar///";
  itr = itr_ck.begin();
  CHECK_EQUAL( *itr, "//foo" );
  CHECK_EQUAL( *++itr, "/" );
  CHECK_EQUAL( *++itr, "bar" );
  CHECK_EQUAL( *++itr, "." );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "." );
  CHECK_EQUAL( *--itr, "bar" );
  CHECK_EQUAL( *--itr, "/" );
  CHECK_EQUAL( *--itr, "//foo" );

  itr_ck = "///foo///bar///";
  itr = itr_ck.begin();
  // three or more leading slashes are to be treated as a single slash
  CHECK_EQUAL( *itr, "/" );
  CHECK_EQUAL( *++itr, "foo" );
  CHECK_EQUAL( *++itr, "bar" );
  CHECK_EQUAL( *++itr, "." );
  BOOST_TEST( ++itr == itr_ck.end() );
  CHECK_EQUAL( *--itr, "." );
  CHECK_EQUAL( *--itr, "bar" );
  CHECK_EQUAL( *--itr, "foo" );
  CHECK_EQUAL( *--itr, "/" );

  if ( platform == "Windows" )
  {
    itr_ck = "c:/";
    itr = itr_ck.begin();
    CHECK_EQUAL( *itr, "c:" );
    CHECK_EQUAL( *++itr, "/" );
    BOOST_TEST( ++itr == itr_ck.end() );
    CHECK_EQUAL( *--itr, "/" );
    CHECK_EQUAL( *--itr, "c:" );

    itr_ck = "c:/foo";
    itr = itr_ck.begin();
    BOOST_TEST( *itr == std::string( "c:" ) );
    BOOST_TEST( *++itr == std::string( "/" ) );
    BOOST_TEST( *++itr == std::string( "foo" ) );
    BOOST_TEST( ++itr == itr_ck.end() );
    BOOST_TEST( *--itr == std::string( "foo" ) );
    BOOST_TEST( *--itr == std::string( "/" ) );
    BOOST_TEST( *--itr == std::string( "c:" ) );

    itr_ck = "c:foo";
    itr = itr_ck.begin();
    BOOST_TEST( *itr == std::string( "c:" ) );
    BOOST_TEST( *++itr == std::string( "foo" ) );
    BOOST_TEST( ++itr == itr_ck.end() );
    BOOST_TEST( *--itr == std::string( "foo" ) );
    BOOST_TEST( *--itr == std::string( "c:" ) );

    itr_ck = "c:foo/";
    itr = itr_ck.begin();
    BOOST_TEST( *itr == std::string( "c:" ) );
    BOOST_TEST( *++itr == std::string( "foo" ) );
    BOOST_TEST( *++itr == std::string( "." ) );
    BOOST_TEST( ++itr == itr_ck.end() );
    BOOST_TEST( *--itr == std::string( "." ) );
    BOOST_TEST( *--itr == std::string( "foo" ) );
    BOOST_TEST( *--itr == std::string( "c:" ) );
  }
  else
  {
    itr_ck = "///";
    itr = itr_ck.begin();
    CHECK_EQUAL( *itr,  "/" );
    BOOST_TEST( ++itr == itr_ck.end() );
  }

  path p;

  p = "";
  BOOST_TEST( p.relative_path().string() == "" );
  BOOST_TEST( p.parent_path().string() == "" );
  BOOST_TEST( p.filename() == "" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( !p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "/";
  BOOST_TEST( p.relative_path().string() == "" );
  BOOST_TEST( p.parent_path().string() == "" );
  BOOST_TEST( p.filename() == "/" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "/" );
  BOOST_TEST( p.root_path().string() == "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  p = "//";
  CHECK_EQUAL( p.relative_path().string(), "" );
  CHECK_EQUAL( p.parent_path().string(), "" );
  CHECK_EQUAL( p.filename(), "//" );
  CHECK_EQUAL( p.root_name(), "//" );
  CHECK_EQUAL( p.root_directory(), "" );
  CHECK_EQUAL( p.root_path().string(), "//" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );


  p = "///";
  CHECK_EQUAL( p.relative_path().string(), "" );
  CHECK_EQUAL( p.parent_path().string(), "" );
  CHECK_EQUAL( p.filename(), "/" );
  CHECK_EQUAL( p.root_name(), "" );
  CHECK_EQUAL( p.root_directory(), "/" );
  CHECK_EQUAL( p.root_path().string(), "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  p = ".";
  BOOST_TEST( p.relative_path().string() == "." );
  BOOST_TEST( p.parent_path().string() == "" );
  BOOST_TEST( p.filename() == "." );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "..";
  BOOST_TEST( p.relative_path().string() == ".." );
  BOOST_TEST( p.parent_path().string() == "" );
  BOOST_TEST( p.filename() == ".." );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "foo";
  BOOST_TEST( p.relative_path().string() == "foo" );
  BOOST_TEST( p.parent_path().string() == "" );
  BOOST_TEST( p.filename() == "foo" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "/foo";
  CHECK_EQUAL( p.relative_path().string(), "foo" );
  CHECK_EQUAL( p.parent_path().string(), "/" );
  CHECK_EQUAL( p.filename(), "foo" );
  CHECK_EQUAL( p.root_name(), "" );
  CHECK_EQUAL( p.root_directory(), "/" );
  CHECK_EQUAL( p.root_path().string(), "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  p = "/foo/";
  CHECK_EQUAL( p.relative_path().string(), "foo/" );
  CHECK_EQUAL( p.parent_path().string(), "/foo" );
  CHECK_EQUAL( p.filename(), "." );
  CHECK_EQUAL( p.root_name(), "" );
  CHECK_EQUAL( p.root_directory(), "/" );
  CHECK_EQUAL( p.root_path().string(), "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  p = "///foo";
  CHECK_EQUAL( p.relative_path().string(), "foo" );
  CHECK_EQUAL( p.parent_path().string(), "/" );
  CHECK_EQUAL( p.filename(), "foo" );
  CHECK_EQUAL( p.root_name(), "" );
  CHECK_EQUAL( p.root_directory(), "/" );
  CHECK_EQUAL( p.root_path().string(), "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  p = "foo/bar";
  BOOST_TEST( p.relative_path().string() == "foo/bar" );
  BOOST_TEST( p.parent_path().string() == "foo" );
  BOOST_TEST( p.filename() == "bar" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "../foo";
  BOOST_TEST( p.relative_path().string() == "../foo" );
  BOOST_TEST( p.parent_path().string() == ".." );
  BOOST_TEST( p.filename() == "foo" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "" );
  BOOST_TEST( p.root_path().string() == "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "..///foo";
  CHECK_EQUAL( p.relative_path().string(), "..///foo" );
  CHECK_EQUAL( p.parent_path().string(), ".." );
  CHECK_EQUAL( p.filename(), "foo" );
  CHECK_EQUAL( p.root_name(), "" );
  CHECK_EQUAL( p.root_directory(), "" );
  CHECK_EQUAL( p.root_path().string(), "" );
  BOOST_TEST( !p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = "/foo/bar";
  BOOST_TEST( p.relative_path().string() == "foo/bar" );
  BOOST_TEST( p.parent_path().string() == "/foo" );
  BOOST_TEST( p.filename() == "bar" );
  BOOST_TEST( p.root_name() == "" );
  BOOST_TEST( p.root_directory() == "/" );
  BOOST_TEST( p.root_path().string() == "/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( !p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  if ( platform == "POSIX" )
    BOOST_TEST( p.is_complete() );
  else
    BOOST_TEST( !p.is_complete() );

  // Both POSIX and Windows allow two leading slashs
  // (POSIX meaning is implementation defined)
  PATH_CHECK( path( "//resource" ), "//resource" );
  PATH_CHECK( path( "//resource/" ), "//resource/" );
  PATH_CHECK( path( "//resource/foo" ), "//resource/foo" );

  p = path( "//net" );
  CHECK_EQUAL( p.string(), "//net" );
  CHECK_EQUAL( p.relative_path().string(), "" );
  CHECK_EQUAL( p.parent_path().string(), "" );
  CHECK_EQUAL( p.filename(), "//net" );
  CHECK_EQUAL( p.root_name(), "//net" );
  CHECK_EQUAL( p.root_directory(), "" );
  CHECK_EQUAL( p.root_path().string(), "//net" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( p.has_root_name() );
  BOOST_TEST( !p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( !p.has_parent_path() );
  BOOST_TEST( !p.is_complete() );

  p = path( "//net/" );
  BOOST_TEST( p.relative_path().string() == "" );
  BOOST_TEST( p.parent_path().string() == "//net" );
  BOOST_TEST( p.filename() == "/" );
  BOOST_TEST( p.root_name() == "//net" );
  BOOST_TEST( p.root_directory() == "/" );
  BOOST_TEST( p.root_path().string() == "//net/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( !p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( p.is_complete() );

  p = path( "//net/foo" );
  BOOST_TEST( p.relative_path().string() == "foo" );
  BOOST_TEST( p.parent_path().string() == "//net/" );
  BOOST_TEST( p.filename() == "foo" );
  BOOST_TEST( p.root_name() == "//net" );
  BOOST_TEST( p.root_directory() == "/" );
  BOOST_TEST( p.root_path().string() == "//net/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( p.is_complete() );

  p = path( "//net///foo" );
  CHECK_EQUAL( p.relative_path().string(), "foo" );
  CHECK_EQUAL( p.parent_path().string(), "//net/" );
  CHECK_EQUAL( p.filename(), "foo" );
  CHECK_EQUAL( p.root_name(), "//net" );
  CHECK_EQUAL( p.root_directory(), "/" );
  CHECK_EQUAL( p.root_path().string(), "//net/" );
  BOOST_TEST( p.has_root_path() );
  BOOST_TEST( p.has_root_name() );
  BOOST_TEST( p.has_root_directory() );
  BOOST_TEST( p.has_relative_path() );
  BOOST_TEST( p.has_filename() );
  BOOST_TEST( p.has_parent_path() );
  BOOST_TEST( p.is_complete() );

  if ( platform == "Windows" )
  {
    DIR_CHECK( path( "/foo/bar/" ), "\\foo\\bar\\" );
    DIR_CHECK( path( "//foo//bar//" ), "\\\\foo\\bar\\\\" );
    DIR_CHECK( path( "///foo///bar///" ), "\\foo\\\\\\bar\\\\\\" );

    DIR_CHECK( path( "\\/foo\\/bar\\/" ), "\\\\foo\\bar\\\\" );
    DIR_CHECK( path( "\\//foo\\//bar\\//" ), "\\foo\\\\\\bar\\\\\\" );


    DIR_CHECK( path( "\\foo\\bar\\" ), "\\foo\\bar\\" );
    DIR_CHECK( path( "\\\\foo\\\\bar\\\\" ), "\\\\foo\\bar\\\\" );
    DIR_CHECK( path( "\\\\\\foo\\\\\\bar\\\\\\" ), "\\foo\\\\\\bar\\\\\\" );

    PATH_CHECK( path( "\\" ), "/" );
    PATH_CHECK( path( "\\f" ), "/f" );
    PATH_CHECK( path( "\\foo" ), "/foo" );
    PATH_CHECK( path( "foo\\bar" ), "foo/bar" );
    PATH_CHECK( path( "foo bar" ), "foo bar" );
    PATH_CHECK( path( "c:" ), "c:" );
    PATH_CHECK( path( "c:/" ), "c:/" );
    PATH_CHECK( path( "c:." ), "c:." );
    PATH_CHECK( path( "c:./foo" ), "c:./foo" );
    PATH_CHECK( path( "c:.\\foo" ), "c:./foo" );
    PATH_CHECK( path( "c:.." ), "c:.." );
    PATH_CHECK( path( "c:/." ), "c:/." );
    PATH_CHECK( path( "c:/.." ), "c:/.." );
    PATH_CHECK( path( "c:/../" ), "c:/../" );
    PATH_CHECK( path( "c:\\..\\" ), "c:/../" );
    PATH_CHECK( path( "c:/../.." ), "c:/../.." );
    PATH_CHECK( path( "c:/../foo" ), "c:/../foo" );
    PATH_CHECK( path( "c:\\..\\foo" ), "c:/../foo" );
    PATH_CHECK( path( "c:../foo" ), "c:../foo" );
    PATH_CHECK( path( "c:..\\foo" ), "c:../foo" );
    PATH_CHECK( path( "c:/../../foo" ), "c:/../../foo" );
    PATH_CHECK( path( "c:\\..\\..\\foo" ), "c:/../../foo" );
    PATH_CHECK( path( "c:foo/.." ), "c:foo/.." );
    PATH_CHECK( path( "c:/foo/.." ), "c:/foo/.." );
    PATH_CHECK( path( "c:/..foo" ), "c:/..foo" );
    PATH_CHECK( path( "c:foo" ), "c:foo" );
    PATH_CHECK( path( "c:/foo" ), "c:/foo" );
    PATH_CHECK( path( "\\\\netname" ), "//netname" );
    PATH_CHECK( path( "\\\\netname\\" ), "//netname/" );
    PATH_CHECK( path( "\\\\netname\\foo" ), "//netname/foo" );
    PATH_CHECK( path( "c:/foo" ), "c:/foo" );
    PATH_CHECK( path( "prn:" ), "prn:" );

    p = path( "c:" );
    BOOST_TEST( p.relative_path().string() == "" );
    BOOST_TEST( p.parent_path().string() == "" );
    BOOST_TEST( p.filename() == "c:" );
    BOOST_TEST( p.root_name() == "c:" );
    BOOST_TEST( p.root_directory() == "" );
    BOOST_TEST( p.root_path().string() == "c:" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( !p.has_root_directory() );
    BOOST_TEST( !p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( !p.has_parent_path() );
    BOOST_TEST( !p.is_complete() );

    p = path( "c:foo" );
    BOOST_TEST( p.relative_path().string() == "foo" );
    BOOST_TEST( p.parent_path().string() == "c:" );
    BOOST_TEST( p.filename() == "foo" );
    BOOST_TEST( p.root_name() == "c:" );
    BOOST_TEST( p.root_directory() == "" );
    BOOST_TEST( p.root_path().string() == "c:" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( !p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( !p.is_complete() );
 
    p = path( "c:/" );
    BOOST_TEST( p.relative_path().string() == "" );
    BOOST_TEST( p.parent_path().string() == "c:" );
    BOOST_TEST( p.filename() == "/" );
    BOOST_TEST( p.root_name() == "c:" );
    BOOST_TEST( p.root_directory() == "/" );
    BOOST_TEST( p.root_path().string() == "c:/" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( p.has_root_directory() );
    BOOST_TEST( !p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( p.is_complete() );

    p = path( "c:.." );
    BOOST_TEST( p.relative_path().string() == ".." );
    BOOST_TEST( p.parent_path().string() == "c:" );
    BOOST_TEST( p.filename() == ".." );
    BOOST_TEST( p.root_name() == "c:" );
    BOOST_TEST( p.root_directory() == "" );
    BOOST_TEST( p.root_path().string() == "c:" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( !p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( !p.is_complete() );

    p = path( "c:/foo" );
    CHECK_EQUAL( p.relative_path().string(), "foo" );
    CHECK_EQUAL( p.parent_path().string(), "c:/" );
    CHECK_EQUAL( p.filename(), "foo" );
    CHECK_EQUAL( p.root_name(), "c:" );
    CHECK_EQUAL( p.root_directory(), "/" );
    CHECK_EQUAL( p.root_path().string(), "c:/" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( p.is_complete() );

    p = path( "c://foo" );
    CHECK_EQUAL( p.relative_path().string(), "foo" );
    CHECK_EQUAL( p.parent_path().string(), "c:/" );
    CHECK_EQUAL( p.filename(), "foo" );
    CHECK_EQUAL( p.root_name(), "c:" );
    CHECK_EQUAL( p.root_directory(), "/" );
    CHECK_EQUAL( p.root_path().string(), "c:/" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( p.is_complete() );

    p = path( "c:\\foo\\bar" );
    CHECK_EQUAL( p.relative_path().string(), "foo/bar" );
    CHECK_EQUAL( p.parent_path().string(), "c:/foo" );
    CHECK_EQUAL( p.filename(), "bar" );
    CHECK_EQUAL( p.root_name(), "c:" );
    CHECK_EQUAL( p.root_directory(), "/" );
    CHECK_EQUAL( p.root_path().string(), "c:/" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( p.is_complete() );

    p = path( "prn:" );
    BOOST_TEST( p.relative_path().string() == "" );
    BOOST_TEST( p.parent_path().string() == "" );
    BOOST_TEST( p.filename() == "prn:" );
    BOOST_TEST( p.root_name() == "prn:" );
    BOOST_TEST( p.root_directory() == "" );
    BOOST_TEST( p.root_path().string() == "prn:" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( !p.has_root_directory() );
    BOOST_TEST( !p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( !p.has_parent_path() );
    BOOST_TEST( !p.is_complete() );

    p = path( "\\\\net\\\\\\foo" );
    CHECK_EQUAL( p.relative_path().string(), "foo" );
    CHECK_EQUAL( p.parent_path().string(), "//net/" );
    CHECK_EQUAL( p.filename(), "foo" );
    CHECK_EQUAL( p.root_name(), "//net" );
    CHECK_EQUAL( p.root_directory(), "/" );
    CHECK_EQUAL( p.root_path().string(), "//net/" );
    BOOST_TEST( p.has_root_path() );
    BOOST_TEST( p.has_root_name() );
    BOOST_TEST( p.has_root_directory() );
    BOOST_TEST( p.has_relative_path() );
    BOOST_TEST( p.has_filename() );
    BOOST_TEST( p.has_parent_path() );
    BOOST_TEST( p.is_complete() );

    itr_ck = path( "c:" );
    BOOST_TEST( *itr_ck.begin() == std::string( "c:" ) );
    BOOST_TEST( boost::next( itr_ck.begin() ) == itr_ck.end() );
    BOOST_TEST( boost::prior( itr_ck.end() ) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "c:" ) );

    itr_ck = path( "c:/" );
    BOOST_TEST( *itr_ck.begin() == std::string( "c:" ) );
    BOOST_TEST( *boost::next( itr_ck.begin() ) == std::string( "/" ) );
    BOOST_TEST( boost::next( boost::next( itr_ck.begin() )) == itr_ck.end() );
    BOOST_TEST( boost::prior( boost::prior( itr_ck.end() )) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "/" ) );
    BOOST_TEST( *boost::prior( boost::prior( itr_ck.end() )) == std::string( "c:" ) );

    itr_ck = path( "c:foo" );
    BOOST_TEST( *itr_ck.begin() == std::string( "c:" ) );
    BOOST_TEST( *boost::next( itr_ck.begin() ) == std::string( "foo" ) );
    BOOST_TEST( boost::next(boost::next( itr_ck.begin() )) == itr_ck.end() );
    BOOST_TEST( boost::prior(boost::prior( itr_ck.end() )) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "foo" ) );
    BOOST_TEST( *boost::prior(boost::prior( itr_ck.end() )) == std::string( "c:" ) );

    itr_ck = path( "c:/foo" );
    BOOST_TEST( *itr_ck.begin() == std::string( "c:" ) );
    BOOST_TEST( *boost::next( itr_ck.begin() ) == std::string( "/" ) );
    BOOST_TEST( *boost::next( boost::next( itr_ck.begin() )) == std::string( "foo" ) );
    BOOST_TEST( boost::next( boost::next( boost::next( itr_ck.begin() ))) == itr_ck.end() );
    BOOST_TEST( boost::prior( boost::prior( boost::prior( itr_ck.end() ))) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "foo" ) );
    BOOST_TEST( *boost::prior( boost::prior( itr_ck.end() )) == std::string( "/" ) );
    BOOST_TEST( *boost::prior( boost::prior( boost::prior( itr_ck.end() ))) == std::string( "c:" ) );

    itr_ck = path( "//net" );
    BOOST_TEST( *itr_ck.begin() == std::string( "//net" ) );
    BOOST_TEST( boost::next( itr_ck.begin() ) == itr_ck.end() );
    BOOST_TEST( boost::prior( itr_ck.end() ) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "//net" ) );

    itr_ck = path( "//net/" );
    CHECK_EQUAL( *itr_ck.begin(), "//net" );
    CHECK_EQUAL( *boost::next( itr_ck.begin() ), "/" );
    BOOST_TEST( boost::next(boost::next( itr_ck.begin() )) == itr_ck.end() );
    BOOST_TEST( boost::prior(boost::prior( itr_ck.end() )) == itr_ck.begin() );
    CHECK_EQUAL( *boost::prior( itr_ck.end() ), "/" );
    CHECK_EQUAL( *boost::prior(boost::prior( itr_ck.end() )), "//net" );

    itr_ck = path( "//net/foo" );
    BOOST_TEST( *itr_ck.begin() == std::string( "//net" ) );
    BOOST_TEST( *boost::next( itr_ck.begin() ) == std::string( "/" ) );
    BOOST_TEST( *boost::next(boost::next( itr_ck.begin() )) == std::string( "foo" ) );
    BOOST_TEST( boost::next(boost::next(boost::next( itr_ck.begin() ))) == itr_ck.end() );
    BOOST_TEST( boost::prior(boost::prior(boost::prior( itr_ck.end() ))) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "foo" ) );
    BOOST_TEST( *boost::prior(boost::prior( itr_ck.end() )) == std::string( "/" ) );
    BOOST_TEST( *boost::prior(boost::prior(boost::prior( itr_ck.end() ))) == std::string( "//net" ) );

    itr_ck = path( "prn:" );
    BOOST_TEST( *itr_ck.begin() == std::string( "prn:" ) );
    BOOST_TEST( boost::next( itr_ck.begin() ) == itr_ck.end() );
    BOOST_TEST( boost::prior( itr_ck.end() ) == itr_ck.begin() );
    BOOST_TEST( *boost::prior( itr_ck.end() ) == std::string( "prn:" ) );
  } // Windows

  else
  { // POSIX
    DIR_CHECK( path( "/foo/bar/" ), "/foo/bar/" );
    DIR_CHECK( path( "//foo//bar//" ), "//foo//bar//" );
    DIR_CHECK( path( "///foo///bar///" ), "///foo///bar///" );

    p = path( "/usr/local/bin:/usr/bin:/bin" );
    BOOST_TEST( p.file_string() == "/usr/local/bin:/usr/bin:/bin" );
  } // POSIX

  // test non-member functions, particularly operator overloads
                                                             
  path e, e2;
  std::string es, es2;
  char ecs[] = "";
  char ecs2[] = "";

  char acs[] = "a";
  std::string as(acs);
  path a( as );

  char acs2[] = "a";
  std::string as2(acs2);
  path a2( as2 );

  char bcs[] = "b";
  std::string bs(bcs);
  path b( bs );

  // swap
  a.swap( b );
  BOOST_TEST( a.string() == "b" );
  BOOST_TEST( b.string() == "a" );
  fs::swap( a, b );
  BOOST_TEST( a.string() == "a" );
  BOOST_TEST( b.string() == "b" );

  // probe operator /
  BOOST_TEST( (b / a).string() == "b/a" );
  BOOST_TEST( (bs / a).string() == "b/a" );
  BOOST_TEST( (bcs / a).string() == "b/a" );
  BOOST_TEST( (b / as).string() == "b/a" );
  BOOST_TEST( (b / acs).string() == "b/a" );

  // probe operator <
  BOOST_TEST( !(e < e2) );
  BOOST_TEST( !(es < e2) );
  BOOST_TEST( !(ecs < e2) );
  BOOST_TEST( !(e < es2) );
  BOOST_TEST( !(e < ecs2) );

  BOOST_TEST( e < a );
  BOOST_TEST( es < a );
  BOOST_TEST( ecs < a );
  BOOST_TEST( e < as );
  BOOST_TEST( e < acs );

  BOOST_TEST( a < b );
  BOOST_TEST( as < b );
  BOOST_TEST( acs < b );
  BOOST_TEST( a < bs );
  BOOST_TEST( a < bcs );

  BOOST_TEST( !(a < a2) );
  BOOST_TEST( !(as < a2) );
  BOOST_TEST( !(acs < a2) );
  BOOST_TEST( !(a < as2) );
  BOOST_TEST( !(a < acs2) );

  // make sure basic_path overloads don't conflict with std::string overloads

  BOOST_TEST( !(as < as) );
  BOOST_TEST( !(as < acs) );
  BOOST_TEST( !(acs < as) );

  // reality check character set is as expected
  BOOST_TEST( std::string("a.b") < std::string("a/b") );
  // verify compare is actually lexicographical
  BOOST_TEST( path("a/b") < path("a.b") );

  // make sure the derivative operators also work
  BOOST_TEST( a == a2 );
  BOOST_TEST( as == a2 );
  BOOST_TEST( acs == a2 );
  BOOST_TEST( a == as2 );
  BOOST_TEST( a == acs2 );

  BOOST_TEST( a != b );
  BOOST_TEST( as != b );
  BOOST_TEST( acs != b );
  BOOST_TEST( a != bs );
  BOOST_TEST( a != bcs );

  BOOST_TEST( b > a );
  BOOST_TEST( b > as );
  BOOST_TEST( b > acs );
  BOOST_TEST( bs > a);
  BOOST_TEST( bcs > a);

  BOOST_TEST( !(a2 > a) );
  BOOST_TEST( !(a2 > as) );
  BOOST_TEST( !(a2 > acs) );
  BOOST_TEST( !(as2 > a) );
  BOOST_TEST( !(acs2 > a) );

  BOOST_TEST( a <= b );
  BOOST_TEST( as <= b );
  BOOST_TEST( acs <= b );
  BOOST_TEST( a <= bs );
  BOOST_TEST( a <= bcs );

  BOOST_TEST( a <= a2 );
  BOOST_TEST( as <= a2 );
  BOOST_TEST( acs <= a2 );
  BOOST_TEST( a <= as2 );
  BOOST_TEST( a <= acs2 );

  BOOST_TEST( b >= a );
  BOOST_TEST( bs >= a );
  BOOST_TEST( bcs >= a );
  BOOST_TEST( b >= as );
  BOOST_TEST( b >= acs );

  BOOST_TEST( a2 >= a );
  BOOST_TEST( as2 >= a );
  BOOST_TEST( acs2 >= a );
  BOOST_TEST( a2 >= as );
  BOOST_TEST( a2 >= acs );
  
// extension() tests

  BOOST_TEST( path("a/b").extension() == "" );
  BOOST_TEST( path("a.b/c").extension() == "" );
  BOOST_TEST( path("a/b.txt").extension() == ".txt" );
  BOOST_TEST( path("a/b.").extension() == "." );
  BOOST_TEST( path("a.b.c").extension() == ".c" );
  BOOST_TEST( path("a.b.c.").extension() == "." );
  BOOST_TEST( path("").extension() == "" );
  BOOST_TEST( path("a/").extension() == "." );
  
// stem() tests

  BOOST_TEST( path("b").stem() == "b" );
  BOOST_TEST( path("a/b.txt").stem() == "b" );
  BOOST_TEST( path("a/b.").stem() == "b" ); 
  BOOST_TEST( path("a.b.c").stem() == "a.b" );
  BOOST_TEST( path("a.b.c.").stem() == "a.b.c" );
  BOOST_TEST( path("").stem() == "" );
  
// replace_extension() tests

  BOOST_TEST( path("a.txt").replace_extension("").string() == "a" );
  BOOST_TEST( path("a.txt").replace_extension(".").string() == "a." );
  BOOST_TEST( path("a.txt").replace_extension(".tex").string() == "a.tex" );
  BOOST_TEST( path("a.txt").replace_extension("tex").string() == "a.tex" );
  BOOST_TEST( path("a.").replace_extension(".tex").string() == "a.tex" );
  BOOST_TEST( path("a.").replace_extension("tex").string() == "a.tex" );
  BOOST_TEST( path("a").replace_extension(".txt").string() == "a.txt" );
  BOOST_TEST( path("a").replace_extension("txt").string() == "a.txt" );
  BOOST_TEST( path("a.b.txt" ).replace_extension(".tex").string() == "a.b.tex" );  
  BOOST_TEST( path("a.b.txt" ).replace_extension("tex").string() == "a.b.tex" );  
  // see the rationale in html docs for explanation why this works
  BOOST_TEST( path("").replace_extension(".png").string() == ".png" );
  BOOST_TEST_EQ(path("a.txt/b").replace_extension(".c"), "a.txt/b.c"); // ticket 4702

  // inserter and extractor tests
# if !defined( BOOST_MSVC ) || BOOST_MSVC > 1300 // bypass VC++ 7.0 and earlier
  std::cout << "\nInserter and extractor test...";
  std::stringstream ss;
  ss << fs::path( "foo bar" ) << std::endl;  // ensure space in path roundtrips
  fs::path round_trip;
  ss >> round_trip;
  BOOST_TEST( round_trip.string() == "foo bar" );
  std::cout << round_trip.string() << "..." << round_trip << " complete\n";
# endif

  return ::boost::report_errors();
}