.. -*- mode: rst -*-

==============
 Opster tests
==============

This is a test suite for opster library. Just read it to get some idea of how it
works.

.. highlight:: console

Actors cast
-----------

Define some help functions::

  $ function run() { name=$1; shift; python "$TESTDIR/$name" "$@"; }

Main characters:

* `multicommands.py <http://hg.piranha.org.ua/opster/file/tip/tests/multicommands.py>`_
* `test_opts.py <http://hg.piranha.org.ua/opster/file/tip/tests/test_opts.py>`_


Action
------

Check if usage is working::

  $ run multicommands.py
  usage: multicommands.py <command> [options]
  
  commands:
  
   nodoc   (no help text available)
   simple  Just simple command to print keys of received arguments.


Ok, then let's run it::

  $ run multicommands.py simple
  ['test', 'ui']

.. _multihelp1:

Yeah, nice one, but we know that command ``complex`` is just hidden there. Let's
check it out::

  $ run multicommands.py help complex
  multicommands.py complex [-p] [--exit value] ...
  
  That's more complex command intended to do something
  
      И самое главное - мы тут немножечко текста не в ascii напишем
      и посмотрим, что будет. :)
  
  options:
  
   -p --pass     don't run the command
      --exit     exit with supplied code (default: 0)
   -n --name     optional name
   -v --verbose  enable additional output
   -q --quiet    suppress output
   -h --help     display help


We also have completion::

  $ run multicommands.py _completion
  # opster bash completion start
  _opster_completion()
  {
      COMPREPLY=( $( COMP_WORDS="${COMP_WORDS[*]}" \
                     COMP_CWORD=$COMP_CWORD \
                     OPSTER_AUTO_COMPLETE=1 $1 ) )
  }
  complete -o default -F _opster_completion multicommands.py
  # opster bash completion end


Now we're going to test if a script with a single command will work (not
everyone needs subcommands, you know)::

  $ run test_opts.py
  another: invalid arguments
  
  test_opts.py [-l HOST] DIR
  
  Command with option declaration as keyword arguments
  
  options:
  
   -l --listen       ip to listen on (default: localhost)
   -p --port         port to listen on (default: 8000)
   -d --daemonize    daemonize process
      --pid-file     name of file to write process ID to
   -D --definitions  just some definitions
   -t --test         testing help for a function (default: test)
   -h --help         show help


Yeah, I've got it, I should supply some arguments::

  $ run test_opts.py -d -p 5656 --listen anywhere right-here
  {'daemonize': True,
   'definitions': {},
   'dirname': 'right-here',
   'listen': 'anywhere',
   'pid_file': '',
   'port': 5656,
   'test': 'test'}

.. _definitions-test:

Now let's test our definitions::

  $ run test_opts.py -D a=b so-what?
  {'daemonize': False,
   'definitions': {'a': 'b'},
   'dirname': 'so-what?',
   'listen': 'localhost',
   'pid_file': '',
   'port': 8000,
   'test': 'test'}

  $ run test_opts.py -D can-i-haz fail?
  definitions: wrong definition: 'can-i-haz' (should be in format KEY=VALUE)
  
  test_opts.py [-l HOST] DIR
  
  Command with option declaration as keyword arguments
  
  options:
  
   -l --listen       ip to listen on (default: localhost)
   -p --port         port to listen on (default: 8000)
   -d --daemonize    daemonize process
      --pid-file     name of file to write process ID to
   -D --definitions  just some definitions
   -t --test         testing help for a function (default: test)
   -h --help         show help


Should we check passing some invalid arguments? I think so::

  $ run test_opts.py --wrong-option
  error: option --wrong-option not recognized
  
  test_opts.py [-l HOST] DIR
  
  Command with option declaration as keyword arguments
  
  options:
  
   -l --listen       ip to listen on (default: localhost)
   -p --port         port to listen on (default: 8000)
   -d --daemonize    daemonize process
      --pid-file     name of file to write process ID to
   -D --definitions  just some definitions
   -t --test         testing help for a function (default: test)
   -h --help         show help


Another things should be checked: calling help display from the function
itself::

  $ run selfhelp.py --assist
  selfhelp.py [OPTIONS] 
  
  Displays ability to show help
  
  options:
  
      --assist  show help
   -h --help    show help


.. _multihelp2:

Are we getting nicely stripped body when not following subject/body convention
of writing commands?

::

  $ run hello.py --help
  hello.py [options]
  
  Hello world continues the long established tradition
  of delivering simple, but working programs in all
  kinds of programming languages.
  
  options:
  
   -n --name  your name (default: world)
   -h --help  show help


That's all for today; see you next time!