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a small RSpec clone
Home Page: http://rubyforge.org/projects/test-spec/
License: Other
This project forked from leahneukirchen/bacon
a small RSpec clone
Home Page: http://rubyforge.org/projects/test-spec/
License: Other
= 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/) As of Bacon 1.1, it also supports Knock: $ bacon -k whirlwind.rb ok - should be empty ok - should have zero size ok - should raise on trying fetch any index ok - should have an object identity ok - should be a palindrome not ok - 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 $ bacon -k whirlwind.rb | kn-sum 6 tests, 1 failed (83.3333% succeeded) (knock is available from http://github.com/chneukirchen/knock/) == 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? == before/after before and after need to be defined before the first specification in a context and are run before and after each specification. As of Bacon 1.1, before and after do nest in nested contexts. == Shared contexts You can define shared contexts in Bacon like this: shared "an empty container" do it "should have size zero" do end it "should be empty" do end end context "A new array" do behaves_like "an empty container" end These contexts are not executed on their own, but can be included with behaves_like in other contexts. You can use shared contexts to structure suites with many recurring specifications. == Matchers Custom matchers are simply lambdas returning a boolean value, for example: def shorter_than(max_size) lambda { |obj| obj.size < max_size } end [1,2,3].should.be shorter_than(5) You can use modules and extend to group matchers for use in multiple contexts. == bacon standalone runner -s, --specdox do AgileDox-like output (default) -q, --quiet do Test::Unit-like non-verbose output -p, --tap do TAP (Test Anything Protocol) output -k, --knock do Knock output -o, --output FORMAT do FORMAT (SpecDox/TestUnit/Tap) output -Q, --no-backtrace don't print backtraces -a, --automatic gather tests from ./test/, include ./lib/ -n, --name NAME runs tests matching regexp NAME -t, --testcase TESTCASE runs tests in TestCases matching regexp TESTCASE If you don't want to use the standalone runner, run Bacon.summary_on_exit to install an exit handler showing the summary. == Object#should You can use Object#should outside of contexts, where the result of assertion will be returned as a boolean. This is nice for demonstrations, quick checks and doctest tests. >> require 'bacon' >> (1 + 1).should.equal 2 => true >> (6*9).should.equal 42 => false == Bacon with autotest Since version 1.0, there is autotest support. You need to tag your test directories (test/ or spec/) by creating an .bacon file there. Autotest then will find it. bin/bacon needs to be in PATH or RUBYPATH. == Converting specs spec-converter is a simple tool to convert test-unit or dust style tests to test/spec specs. It can be found at http://opensource.thinkrelevance.com/wiki/spec_converter. == 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. * Yossef Mendelssohn, for nested contexts. * 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. * November 30th, 2008: Third public release 1.1. * Nested before/after. * Add -Q/--no-backtraces to not show details about failed specifications. * Add Knock output. * Bug fixes. == Contact Please mail bugs, suggestions and patches to <mailto:[email protected]>. Git repository (patches rebased on HEAD are most welcome): http://github.com/chneukirchen/bacon git://github.com/chneukirchen/bacon.git == 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/>
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