Command line parameters testing

ruby-talk
1

Hello,
I'm using Runit to write unit test for a class that takes command line
parameters.

How do I pass commandline parameters from Runit class to my actual class
that it's testing?

I'm a new bee to ruby and any help will be appreciated.

Thanks,
App

···

--
Posted via http://www.ruby-forum.com/.

2

App Ra wrote:

Hello,
I'm using Runit to write unit test for a class that takes command line
parameters.

How do I pass commandline parameters from Runit class to my actual class
that it's testing?

By typing the Ruby script name and then the arguments. Perhaps a bit more
detail on your problem would help us help you. Do you want to know how to
create the command-line arguments, or how to read them?

···

-----------------------------------------

#!/usr/bin/ruby -w

n = 0

ARGV.each do |arg|
   puts "Argument #{n}: #{arg}"
   n += 1
end

-----------------------------------------

$ (ruby script name) This is a test.

Output:

Argument 0: This
Argument 1: is
Argument 2: a
Argument 3: test.

--
Paul Lutus
http://www.arachnoid.com

3

Passing arguments to your class instead of runit: (actually I don't
know much about Runit, but this is common style, and test/unit does it
as well, so): The trick is to deparate parameters to your class with
-- i.e. when I'm using test/unit I might do:

tc_whatever.rb -n /test_name/ -- -a -b --c --defgh ijkl

Then -n /test_name/ will be processed by test/unit and -a -b --c
--defgh ijkl will be passed to the test.

Now to testing parameters: It's better to put the command line
processing stuff into a method that you'll call with ARGV rather than
using ARGV inside the method.
That way you'll be able to test the parameter parsing without actually
messing with ARGV:

class Main
  def parse_params(argv)
     ...
  end
  def run
      @params = parse_params(ARGV)
  end
end

class TestMain < Test::Unit::TestCase
  def setup
      @main = Main.new
  end
  def test_parse_params
      assert_something xxx, @main.parse_params(%w[-c -a -b -addsa -das
--d-dsada])
      assert_something yyyy, @main.parse_params(%w[-c -a -b --d-dsada])
      assert_something_other @main.parse_params(%w[-c -addsa -das --d-dsada])
  end
end

···

On 11/4/06, App Ra <rapparna@hotmail.com> wrote:

Hello,
I'm using Runit to write unit test for a class that takes command line
parameters.

How do I pass commandline parameters from Runit class to my actual class
that it's testing?

I'm a new bee to ruby and any help will be appreciated.

Thanks,
App