define(["Filer", "util"], function(Filer, util) {

  function getTimes(fs, path, callback) {
    fs.stat(path, function(error, stats) {
      if(error) throw error;
      callback({mtime: stats.mtime, atime: stats.atime});
    });
  }

  describe('FileSystemShell.touch', function() {
    beforeEach(util.setup);
    afterEach(util.cleanup);

    it('should be a function', function() {
      var shell = util.shell();
      expect(shell.touch).to.be.a('function');
    });

    it('should create a new file if path does not exist', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();

      shell.touch('/newfile', function(error) {
        if(error) throw error;

        fs.stat('/newfile', function(error, stats) {
          expect(error).not.to.exist;
          expect(stats.type).to.equal('FILE');
          done();
        });
      });
    });

    it('should skip creating a new file if options.updateOnly is true', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();

      shell.touch('/newfile', { updateOnly: true }, function(error) {
        if(error) throw error;

        fs.stat('/newfile', function(error, stats) {
          expect(error).to.exist;
          done();
        });
      });
    });

    it('should update times if path does exist', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();
      var atime = Date.parse('1 Oct 2000 15:33:22');
      var mtime = Date.parse('30 Sep 2000 06:43:54');

      fs.open('/newfile', 'w', function (error, fd) {
        if (error) throw error;

        fs.futimes(fd, atime, mtime, function (error) {
          if(error) throw error;

          fs.close(fd, function(error) {
            if(error) throw error;

            getTimes(fs, '/newfile', function(times1) {
              shell.touch('/newfile', function(error) {
                expect(error).not.to.exist;

                getTimes(fs, '/newfile', function(times2) {
                  expect(times2.mtime).to.be.above(times1.mtime);
                  expect(times2.atime).to.be.above(times1.atime);
                  done();
                });
              });
            });
          });
        });
      });
    });

    it('should update times to specified date if path does exist', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();
      var date = Date.parse('1 Oct 2001 15:33:22');

      fs.open('/newfile', 'w', function (error, fd) {
        if (error) throw error;

        fs.close(fd, function(error) {
          if(error) throw error;

          shell.touch('/newfile', { date: date }, function(error) {
            expect(error).not.to.exist;

            getTimes(fs, '/newfile', function(times) {
              expect(times.mtime).to.equal(date);
              expect(times.atime).to.equal(date);
              done();
            });
          });
        });
      });
    });
  });

});