test for chdir & Poco::Path

chdir.cc

#include <Poco/Path.h>
#include <Poco/Format.h>
#include <iostream>
#include <unistd.h>

int main(int argc, char** argv) {
    std::cout << Poco::format("  current() (Current directory): %s", Poco::Path::current()) << std::endl;
    Poco::Path p(Poco::Path::current());
    std::cout << Poco::format("  .. : %s", p.forDirectory("..").absolute().toString()) << std::endl;

    if (argc == 2) {
        if (chdir(argv[1]) == 0) {
            std::cout << Poco::format("  current() (Current directory): %s", Poco::Path::current()) << std::endl;
        } else {
            std::cout << "cannot move to " << argv[1] << std::endl;
        }
    }
    return 0;
}