// Path_t.cxx

#include "dataset_util/Path.h"
#include <iostream>
#include <cassert>
#include "dataset_util/FileStatus.h"

using std::string;
using std::cout;
using std::endl;

void msg(const char* msg) {
  cout << "----- ";
  cout << msg;
  cout << " -----" << endl;
}

int Path_t() {

  {
    msg("Empty path");
    Path pth;
    cout << pth << endl;
    assert( pth.size() == 0 );
  }

  {
    msg("Path with value");
    Path pth("A:BB:CCC");
    cout << pth << endl;
    assert( pth.size() == 3 );
    assert( pth.front() == "A");
    assert( pth.back() == "CCC");
    msg("to string");
    string spath = pth.to_string();
    cout << spath << endl;
    assert( Path(spath) == pth );
  }

  {
    msg("Path from environment.");
    Path pth;
    pth.getenv("PATH");
    cout << pth << endl;
    assert( pth.size() > 0 );
  }

  {
    msg("Set test path");
    Path pth;
    assert( pth.size() == 0 );
    pth.push_back("BB");
    pth.push_front("A");
    pth.push_back("CCC");
    cout << pth << endl;
    assert( pth.size() == 3 );
    pth.setenv("JUNKPATH");
    msg("Check test path");
    const char* pcenv = getenv("JUNKPATH");
    assert( pcenv != 0 );
    string penv = pcenv;
    cout << penv << endl;
    assert( penv == "A:BB:CCC" );
  }

  {
    msg("Find ls");
    Path pth;
    pth.getenv("PATH");
    Path findpath = pth.find("ls");
    cout << findpath << endl;
    assert( findpath.size() > 0 );
    string pathfile = findpath.front() + "/" + "ls";
    assert( FileStatus(pathfile).exists() );
    string com = "ls -ls " + pathfile;
    assert( system( com.c_str() ) == 0 );
  }

  msg("All tests passed.");
  return 0;
}

#ifdef CTEST_MAIN
int main() {
  return Path_t();
}
#endif