chrickso

test "SHOULD create note AND redirect to Notes#index(SINCE null folder_id) WHEN only body is provided IF logged in as account:owner" do
  sign_in @user
  assert_difference('@user.account.notes.count') do
    post notes_url(@user.account.hash_id), params: { note: { body: @note_by_user_no_folder.body } }
  end
  assert_redirected_to notes_url(@user.account.hash_id, anchor: Note.last.id)
end

chrickso

def sanitize_username(self, s):
  """Takes a string and returns it with only allowed characters."""
  # http://stackoverflow.com/questions/12756156/with-python-what-is-the-most-efficient-way-to-remove-all-char-from-string-excep#comment17236154_12756156
  # a-z, A-Z, 0-9, _, -, .
  keep_set = set(string.ascii_letters + string.digits + '_-.')
  return filter(keep_set.__contains__, s)
  
sanitize_username('chrickso') returns <filter object at 0x10c53aa58>