   ## Examples
 
       assert true
+      assert :ok
 
   """
   defmacro assert(expected) do

  end

  @doc """
  Asserts the `not_expected` value is `nil` or `false`.
  In case it is a truthy value, raises the given message.

  ## Examples

  end

  @doc """
  Refutes the `expected` value is truthy.

  `refute` in general tries to be smart and provide good
  reporting whenever there is a failure.
