# Re: Write Out Then Read In Hash of Two-element Arrays

**URL:** <https://www.ruby-forum.com/t/re-write-out-then-read-in-hash-of-two-element-arrays/94109>\
**Category:** Ruby\
**Created:** [April 21, 2006, 2:28am UTC](https://www.ruby-forum.com/t/re-write-out-then-read-in-hash-of-two-element-arrays/94109 "2006-04-21T02:28:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![PeSSSSaS\_Botp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ecd19e/32.png) [@PeSSSSaS\_Botp](https://www.ruby-forum.com/u/PeSSSSaS_Botp)\
**Post date:** [April 21, 2006, 2:28am UTC](https://www.ruby-forum.com/t/re-write-out-then-read-in-hash-of-two-element-arrays/94109/1 "2006-04-21T02:28:39Z")

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David B. wrote last Friday, April 21, 2006 2:52 AM:

# Uh, how ro I find documentation about unit test?

it is built-in in ruby.

there are lots of docs on it since it is one of the most loved among  
rubyist 🙂  
you can start reading it fr the pickaxe or fr ruby-doc site  
[http://www.ruby-doc.org/stdlib/libdoc/test/unit/rdoc/classes/Test/Unit.html](http://www.ruby-doc.org/stdlib/libdoc/test/unit/rdoc/classes/Test/Unit.html)

kind regards -botp

# David