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

  describe('fs.unlink', function() {
    beforeEach(util.setup);
    afterEach(util.cleanup);

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

    it('should remove a link to an existing file', function(done) {
      var fs = util.fs();
      var complete1, complete2;

      function maybeDone() {
        if(complete1 && complete2) {
          done();
        }
      }

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

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

          fs.link('/myfile', '/myotherfile', function(error) {
            if(error) throw error;

            fs.unlink('/myfile', function(error) {
              if(error) throw error;

              fs.stat('/myfile', function(error, result) {
                expect(error).to.exist;
                complete1 = true;
                maybeDone();
              });

              fs.stat('/myotherfile', function(error, result) {
                if(error) throw error;

                expect(result.nlinks).to.equal(1);
                complete2 = true;
                maybeDone();
              });
            });
          });
        });
      });
    });

    it('should not follow symbolic links', function(done) {
      var fs = util.fs();

      fs.symlink('/', '/myFileLink', function (error) {
        if (error) throw error;

        fs.link('/myFileLink', '/myotherfile', function (error) {
          if (error) throw error;

          fs.unlink('/myFileLink', function (error) {
            if (error) throw error;

            fs.lstat('/myFileLink', function (error, result) {
              expect(error).to.exist;

              fs.lstat('/myotherfile', function (error, result) {
                if (error) throw error;
                expect(result.nlinks).to.equal(1);

                fs.stat('/', function (error, result) {
                  if (error) throw error;
                  expect(result.nlinks).to.equal(1);
                  done();
                });
              });
            });
          });
        });
      });
    });
  });

});