5. Testing

5.1 Test your Objective-C components with Test::Unit

This will be obvious to experienced Rubyists, but it is worth mentioning: the Ruby access that we have to our Objective-C classes makes it much easier to test them.

Although there are more elaborate alternatives, I have been very happy using Test::Unit to write my tests and using Rake to run them. For an example, here’s a simple test of a C parser:

test_c.rb [ruby] 
require 'test/unit'
require 'rubygems'
require 'objc'
require 'CParser'

class TestCParser < Test::Unit::TestCase

  def test_basic
    ObjC::CParser.parseFile_("test/examples/test.c")
    with ObjC::CParser.file do |file|
      assert_equal(1, file.functions.count)
      assert_equal(10, file.functions[0].statements.count)
    end
  end

end
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