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 > -----Original Message-----
> From: list-bounce / example.com 
> [mailto:list-bounce / example.com] On Behalf Of Al Cholic
> Sent: Wednesday, July 25, 2007 6:01 PM
> To: ruby-talk ML
> Subject: How to properly iterate an array (using TDD)
> 
> Hello,
> 
> Im trying to iterate an array, but its not working.
> 
> I have setup a test that looks like this:
> 
> def test_getting_component_info
>     original = ["1  1  C1  0805,C56p  0805", "2  5  C2,C5,C19,C24,C25
> 0603,C0.01  0603  50V +/-10%  ECU-V1H103KBV  Panasonic  2011032601"]
>     expected = "5\n9"
> 
>     assert_equal(expected, get_component_info(original))
>   end
> 
> The string elements are seperated by tabs.
> 
> 
> And here is my method that I am testing:
> 
> def get_component_info(bom)
>   bom.each { |line|
>   line.split("\t").length
>   }
> end
> 
> And here is what the test script says:
> <"5\n9"> expected but was
> <["1\t1\tC1\t0805,C56p\t0805",
>  "2\t5\tC2,C5,C19,C24,C25\t0603,C0.01\t0603\t50V
> +/-10%\tECU-V1H103KBV\tPanasonic\t2011032601"]>.
> 
> The mehtod seems to be returning the same array that im passing in.
> What am I doing wrong?  Without the array iteration Im able 
> to split it by tabs and do everything but as soon as I put 
> the iteration block, everything messes up.
> 
> Can someone please help.
> 
> PS this is my first attempt at TDD.
> --
> Posted via http://www.ruby-forum.com/.
>

Array.each returns self. Your function will have to store the results of the
split lengths somehow. 

Such as:

def get_component_info(bom)
  result = Array.new
  bom.each { |line|
    result << line.split("\t").length
  }
  result.join("\n")
end 

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