urandom
=======
**Source code:** `urandom.py <https://chromium.googlesource.com/chromiumos/platform/factory/+/refs/heads/main/py/test/pytests/urandom.py>`_

A factory test to stress CPU, by generating pseudo random numbers.

Description
-----------
It stresses CPU by generating random number using /dev/urandom for a specified
period of time (specified by ``duration_secs``).

Test Procedure
--------------
This is an automated test without user interaction.

Start the test and it will run for the time specified in argument
``duration_secs``, and pass if no errors found; otherwise fail with error
messages and logs.

Dependency
----------
No dependencies.  This test does not support remote DUT.

Examples
--------
To generate random number and stress CPU for 4 hours, add this in test list::

  {
    "pytest_name": "urandom",
    "args": {
      "duration_secs": 14400
    }
  }


Test Arguments
--------------
.. list-table::
   :widths: 20 10 60
   :header-rows: 1
   :align: left

   * - Name
     - Type
     - Description

   * - duration_secs
     - int
     - How long this test will take?