Validates that a value is an atom.

Optional Options

• :message - Custom error message callback (value -> String.t())

Examples

iex> Funx.Validator.Atom.validate(:ok)
%Funx.Monad.Either.Right{right: :ok}

iex> Funx.Validator.Atom.validate(:error)
%Funx.Monad.Either.Right{right: :error}

iex> Funx.Validator.Atom.validate("atom")
%Funx.Monad.Either.Left{left: %Funx.Errors.ValidationError{errors: ["must be an atom"]}}