 
   @doc """
   Asserts a message was not received (i.e. it is not in the current process mailbox).
-  The `not_expected` contents must be a match pattern.
+  The `not_expected` argument must be a match pattern.
 
   Timeout is set to 0, so there is no waiting time.
 

  end

  @doc """
  Asserts a message was not received and won't be during
  a timeout value.

  The `not_expected` contents must be a match pattern.

  ## Examples



defmodule ExUnit.Assertions do
  @moduledoc """
  This module contains a set of assertion functions that are
  imported by default into your test cases.

  In general, a developer will want to use the general
  `assert` macro in tests. This macro tries to be smart
  and provide good reporting whenever there is a failure.
  For example, `assert some_fun() == 10` will fail (assuming
  `some_fun()` returns 13):

      Expected 10 to be equal to 13

  This module also provides other convenience functions
  like `assert_in_delta` and `assert_raise` to easily handle other
  common cases such as checking a floating point number or handling exceptions.
  """

  @doc """
  Asserts the `expected` value is true.

  `assert` in general tries to be smart and provide good
  reporting whenever there is a failure. For example,
  `assert 10 > 15` is going to fail with the message:

      Expected 10 to be more than 15

