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

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

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

    it('should fail when dirs argument is absent', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();

      shell.cat(null, function(error, list) {
        expect(error).to.exist;
        expect(list).not.to.exist;
        done();
      });
    });

    it('should return the contents of a simple dir', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();
      var contents = "a";
      var contents2 = "bb";

      fs.writeFile('/file', contents, function(err) {
        if(err) throw err;

        fs.writeFile('/file2', contents2, function(err) {
          if(err) throw err;

          shell.ls('/', function(err, list) {
            expect(err).not.to.exist;
            expect(list.length).to.equal(2);

            var item0 = list[0];
            expect(item0.path).to.equal('file');
            expect(item0.links).to.equal(1);
            expect(item0.size).to.equal(1);
            expect(item0.modified).to.be.a('number');
            expect(item0.type).to.equal('FILE');
            expect(item0.contents).not.to.exist;

            var item1 = list[1];
            expect(item1.path).to.equal('file2');
            expect(item1.links).to.equal(1);
            expect(item1.size).to.equal(2);
            expect(item1.modified).to.be.a('number');
            expect(item1.type).to.equal('FILE');
            expect(item0.contents).not.to.exist;

            done();
          });
        });
      });
    });

    it('should return the shallow contents of a dir tree', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();
      var contents = "a";

      fs.mkdir('/dir', function(err) {
        if(err) throw err;

        fs.mkdir('/dir/dir2', function(err) {
          if(err) throw err;

          fs.writeFile('/dir/file', contents, function(err) {
            if(err) throw err;

            fs.writeFile('/dir/file2', contents, function(err) {
              if(err) throw err;

              shell.ls('/dir', function(err, list) {
                expect(err).not.to.exist;
                expect(list.length).to.equal(3);

                // We shouldn't rely on the order we'll get the listing
                list.forEach(function(item, i, arr) {
                  switch(item.path) {
                  case 'dir2':
                    expect(item.links).to.equal(1);
                    expect(item.size).to.be.a('number');
                    expect(item.modified).to.be.a('number');
                    expect(item.type).to.equal('DIRECTORY');
                    expect(item.contents).not.to.exist;
                    break;
                  case 'file':
                  case 'file2':
                    expect(item.links).to.equal(1);
                    expect(item.size).to.equal(1);
                    expect(item.modified).to.be.a('number');
                    expect(item.type).to.equal('FILE');
                    expect(item.contents).not.to.exist;
                    break;
                  default:
                    // shouldn't happen
                    expect(true).to.be.false;
                    break;
                  }

                  if(i === arr.length -1) {
                    done();
                  }
                });
              });
            });
          });
        });
      });
    });

    it('should return the deep contents of a dir tree', function(done) {
      var fs = util.fs();
      var shell = fs.Shell();
      var contents = "a";

      fs.mkdir('/dir', function(err) {
        if(err) throw err;

        fs.mkdir('/dir/dir2', function(err) {
          if(err) throw err;

          fs.writeFile('/dir/dir2/file', contents, function(err) {
            if(err) throw err;

            fs.writeFile('/dir/file', contents, function(err) {
              if(err) throw err;

              fs.writeFile('/dir/file2', contents, function(err) {
                if(err) throw err;

                shell.ls('/dir', { recursive: true }, function(err, list) {
                  expect(err).not.to.exist;
                  expect(list.length).to.equal(3);

                  // We shouldn't rely on the order we'll get the listing
                  list.forEach(function(item, i, arr) {
                    switch(item.path) {
                    case 'dir2':
                      expect(item.links).to.equal(1);
                      expect(item.size).to.be.a('number');
                      expect(item.modified).to.be.a('number');
                      expect(item.type).to.equal('DIRECTORY');
                      expect(item.contents).to.exist;
                      expect(item.contents.length).to.equal(1);
                      var contents0 = item.contents[0];
                      expect(contents0.path).to.equal('file');
                      expect(contents0.links).to.equal(1);
                      expect(contents0.size).to.equal(1);
                      expect(contents0.modified).to.be.a('number');
                      expect(contents0.type).to.equal('FILE');
                      expect(contents0.contents).not.to.exist;
                      break;
                    case 'file':
                    case 'file2':
                      expect(item.links).to.equal(1);
                      expect(item.size).to.equal(1);
                      expect(item.modified).to.be.a('number');
                      expect(item.type).to.equal('FILE');
                      expect(item.contents).not.to.exist;
                      break;
                    default:
                      // shouldn't happen
                      expect(true).to.be.false;
                      break;
                    }

                    if(i === arr.length -1) {
                      done();
                    }
                 });
                });
              });
            });
          });
        });
      });
    });

  });
});