From: "joe.yakich@..." <joe.yakich@...>
Date: 2005-10-07T10:16:49+09:00
Subject: Enhancing/overriding Test::Unit::Assertion methods--what's the best way?

Everyone,

I have a little screen capture routine that I'd like to use
automatically if possible when I use any of the Test::Unit assert
flavors, such as assert, assert_equals, assert_match, etc. (whether or
not the assertion returns true or false).

Is there a spiffy way to override or enhance/extend Test::Unit to do
that? (I'm new to Ruby, and haven't grasped what it means to extend it;
I see in the PickAxe book there's mention of using C, but I think
there's another way to accomplish what I'm describing.)

Ideally, I'd be able to do this:

assert(ie.contains_text('some_text')

or this

assert_match(/'s Web Page/, ie.title)

and assert/assert_match would have been overridden (that's probably a
poor choice of words, but it indicates what I'm naively hoping to
accomplish) so that it automatically did something like this:

def assert_with_screen_capture(params)
  capture_screen
  call_whatever_flavor_of_assert_I_wanted(params)
end

I was hoping to have a drop-in replacement so that existing code would
only have to have another require/include line rather than changing
each assert.* call to some custom one.

Thanks in advance, hope I'm not overlooking something I should have
seen.

Joe