From: Pit Capitain <pit@...>
Date: 2005-11-21T01:22:44+09:00
Subject: Re: Create dynamic tests for Test::Unit

Achim Domma (SyynX Solutions GmbH) schrieb:
> I have some experiences in generic programming in python and .Net but 
> I'm quite new to ruby. I want to test a web app using watir. There are 
> many forms with similar structure which have to be filled with data. So 
> my idea was to create a YAML file which holds the location of a form, 
> the type of the form and the data to be filled in.
> 
> My problem is, that I don't see on how to create dynamicaly a single 
> test for each entry in the yaml file!? Am I not yet thinking in ruby? 
> Could somebody guide me to the right direction on how to solve this task?

Hallo Achim,

maybe this example gets you going:

   require "test/unit"

   DynamicTest = Struct.new :name, :expected, :actual

   DYNAMIC_TESTS = [
     DynamicTest.new( "test_one", 123, 123 ),
     DynamicTest.new( "test_two", 125, 123 ),
     DynamicTest.new( "test_three", 127, 127 ),
   ]

   Class.new Test::Unit::TestCase do
     DYNAMIC_TESTS.each do |t|
       define_method t.name do
         assert_equal t.expected, t.actual
       end
     end
   end

Running this, I get

   Loaded suite C:/tmp/r
   Started
   ..F
   Finished in 0.047 seconds.

     1) Failure:
   test_two()
       [C:/tmp/r.rb:15:in `test_two'
        C:/tmp/r.rb:14:in `test_two']:
   <125> expected but was
   <123>.

   3 tests, 3 assertions, 1 failures, 0 errors

Regards,
Pit