Problem:

You want to test something that accesses files. Something that you want to do all the time for some apps.

Solution:

Create a class called !TempFiles, use it like this (for ruby):

def test_load
	files = TempFiles.new
	files.add('wiki/captions/2003_11-November_captions.txt', CONTENTS)
 
	files.create do |dir|
		captions = Captions.new(Wiki.new(dir, '/2003/11-November'), '/2003/11-November')
 
		assert_equal('Jilian', captions['apPle.JPG'])
		assert_equal('from the top', captions['bitter.jpg'])
	end
end

It can be used from any test, and makes creating a file easy. From ruby the blocks make it really nice. I often add files in the setup code, but always have the block in the actual test. The nice thing about this is it’s easy to add files in your test right before creating them.

I’ll add the c# usage tomorrow

• UPDATE *

this is now a gem called file_sandbox – sudo gem install file_sandbox – enjoy…