rspec-multi-matchers¶ ↑

• test collection using each or other enumerable methods

• makes testing more natural and have a friendlier failure message

• github.com/gregwebs/rspec-multi-matchers

require 'rubygems'
require 'spec'
require 'rspec_multi_matchers'

describe 'array of ones' do
  it 'should be all ones' do
    [1,2,3].should each { |n| 
      n.should == 1
    }
  end

  # this is a new shortcut for a smaller use case
  it 'should be all ones' do
    [1,1,1].should each be_eql(1)
  end
end

=begin output
'array of ones should fail on 2' FAILED
    line: 14
  item 1: 2
expected: 1,
     got: 2 (using ==)
=end

As expected, the output shows expected and got fields line is the line number of the expectiation inside the block the item line gives the index of the item being yielded to the block, and the item itself

Note the use of brackets ‘{ … }’ instead of ‘do … end’ this is necessary because ‘do .. end’ does not bind strongly enough

• blog.thoughtfolder.com/2008-11-05-rspec-should-each-matcher.html

• gem install rspec_multi_matchers

(The MIT License)

Copyright © 2010 Greg Weber

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