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[ANN] Bacon 1.0, a small RSpec clone

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Christian Neukirchen

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Jul 6, 2008, 12:18:13 PM7/6/08
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Hello,

Today I'm proud to release Bacon 1.0.

= Bacon -- small RSpec clone.

"Truth will sooner come out from error than from confusion."
---Francis Bacon

Bacon is a small RSpec clone weighing less than 350 LoC but
nevertheless providing all essential features.

== Whirl-wind tour

require 'bacon'

describe 'A new array' do
before do
@ary = Array.new
end

it 'should be empty' do
@ary.should.be.empty
@ary.should.not.include 1
end

it 'should have zero size' do
@ary.size.should.equal 0
@ary.size.should.be.close 0.1, 0.5
end

it 'should raise on trying fetch any index' do
lambda { @ary.fetch 0 }.
should.raise(IndexError).
message.should.match(/out of array/)

# Alternatively:
should.raise(IndexError) { @ary.fetch 0 }
end

it 'should have an object identity' do
@ary.should.not.be.same_as Array.new
end

# Custom assertions are trivial to do, they are lambdas returning a
# boolean vale:
palindrome = lambda { |obj| obj == obj.reverse }
it 'should be a palindrome' do
@ary.should.be.a palindrome
end

it 'should have super powers' do
should.flunk "no super powers found"
end
end

Now run it:

$ bacon whirlwind.rb
A new array
- should be empty
- should have zero size
- should raise on trying fetch any index
- should have an object identity
- should be a palindrome
- should have super powers [FAILED]

Bacon::Error: no super powers found
./whirlwind.rb:39: A new array - should have super powers
./whirlwind.rb:38
./whirlwind.rb:3

6 specifications (9 requirements), 1 failures, 0 errors

If you want shorter output, use the Test::Unit format:

$ bacon -q whirlwind.rb
.....F
Bacon::Error: no super powers found
./whirlwind.rb:39: A new array - should have super powers
./whirlwind.rb:38
./whirlwind.rb:3

6 tests, 9 assertions, 1 failures, 0 errors

It also supports TAP:

$ bacon -p whirlwind.rb
ok 1 - should be empty
ok 2 - should have zero size
ok 3 - should raise on trying fetch any index
ok 4 - should have an object identity
ok 5 - should be a palindrome
not ok 6 - should have super powers: FAILED
# Bacon::Error: no super powers found
# ./whirlwind.rb:39: A new array - should have super powers
# ./whirlwind.rb:38
# ./whirlwind.rb:3
1..6
# 6 tests, 9 assertions, 1 failures, 0 errors

$ bacon -p whirlwind.rb | taptap -q
Tests took 0.00 seconds.
FAILED tests 6
6) should have super powers: FAILED

Failed 1/6 tests, 83.33% okay.

(taptap is available from http://chneukirchen.org/repos/taptap/)

== Implemented assertions

* should.<predicate> and should.be.<predicate>
* should.equal
* should.match
* should.be.identical_to / should.be.same_as
* should.raise(*exceptions) { }
* should.change { }
* should.throw(symbol) { }
* should.satisfy { |object| }

== Added core predicates

* Object#true?
* Object#false?
* Proc#change?
* Proc#raise?
* Proc#throw?
* Numeric#close?

[... for more documentation see README ...]

== Where can I get it?

You can download Bacon 1.0 at

http://chneukirchen.org/releases/bacon-1.0.0.tar.gz
http://rubyforge.org/projects/test-spec

Alternatively, you can checkout from the development repository with:

darcs get http://chneukirchen.org/repos/bacon

(Patches using "darcs send" are most welcome.)

== Installing with RubyGems

A Gem of Bacon is available. You can install it with:

gem install bacon

I also provide a local mirror of the gems (and development snapshots)
at my site:

gem install bacon --source http://chneukirchen.org/releases/gems

== Thanks to

* Michael Fellinger, for fixing Bacon for 1.9 and various improvements.
* Gabriele Renzi, for implementing Context#should.
* James Tucker, for the autotest support
* everyone contributing bug fixes.

== History

* January 7, 2008: First public release 0.9.

* July 6th, 2008: Second public release 1.0.
* Add Context#should as a shortcut for Context#it('should ' + _).
* describe now supports multiple arguments for better organization.
* Empty specifications are now erroneous.
* after-blocks run in the case of exceptions too.
* Autotest support.
* Bug fixes.

== Contact

Please mail bugs, suggestions and patches to
<mailto:chneuk...@gmail.com>.

Darcs repository ("darcs send" is welcome for patches):
http://chneukirchen.org/repos/bacon

== Copying

Copyright (C) 2007, 2008 Christian Neukirchen <purl.org/net/chneukirchen>

Bacon is freely distributable under the terms of an MIT-style license.
See COPYING or http://www.opensource.org/licenses/mit-license.php.

== Links

Behavior-Driven Development:: <http://behaviour-driven.org/>
RSpec:: <http://rspec.rubyforge.org/>
test/spec:: <http://test-spec.rubyforge.org/>

Christian Neukirchen:: <http://chneukirchen.org/>


Happy hacking and have a nice day,
Christian Neukirchen
--
261f3fb19795897f13913778685bba751ab6085b bacon-1.0.0.tar.gz
2d2049b8ffcf81300bdd34b6b88c397c57219091 bacon-1.0.0.gem

James Britt

unread,
Jul 6, 2008, 12:55:34 PM7/6/08
to
Christian Neukirchen wrote:
> Hello,
>
> Today I'm proud to release Bacon 1.0.


Sweet. Well done!


--
James Britt

www.happycamperstudios.com - Wicked Cool Coding
www.jamesbritt.com - Playing with Better Toys
www.ruby-doc.org - Ruby Help & Documentation
www.rubystuff.com - The Ruby Store for Ruby Stuff

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