From: chris@... (Christian Neukirchen)
Date: 2009-04-04T21:24:26+09:00
Subject: Re: [Ann] Verify, a very basic testing tool.

Without proper announce, I'd like to show that I had something similar
for quite some time now, as part of my knock project:

% cat t.tb
require 'knock'
include Knock

testing "various expectances" do
  expect(42) { 6 * 7 }
  expect(nil) { nil }
  expect(NameError) { abcdefghijk }

  is 42, 6*7
  ok 42 == 6*7
end

testing "that the universe is ok" do
  testing "this only shows in error reports" do
    1 / 0
  end
end

% ruby t.rb 
ok - various expectances - expecting value 42
ok - various expectances - expecting value nil
ok - various expectances - expecting exception NameError
ok - various expectances
ok - various expectances
not ok - /Users/chris/mess/current/t.rb:14 - that the universe is ok - this only shows in error reports - RAISED: divided by 0
#  /Users/chris/mess/current/t.rb:15:in `/'
#  /Users/chris/mess/current/t.rb:15
#  /Users/chris/mess/current/t.rb:14
#  /Users/chris/mess/current/t.rb:13

% ruby t.rb | kn-agg 
not ok - 6 tests, 1 failed (83.3333% succeeded)

The expect API is a rip-off from http://expectations.rubyforge.org/,
but simplified to its core:

% wc -l knock.rb kn-agg
      61 knock.rb
      10 kn-agg

Sources can be found at
http://github.com/chneukirchen/knock/tree/master

There are implementations for C, Ruby, sh/bash/zsh, and it is trivial
to implement in any language that supports "puts" in some way.
-- 
Christian Neukirchen  <chneukirchen@gmail.com>  http://chneukirchen.org