File: count_spec.rb

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ruby-immutable-ruby 0.1.0-2
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require 'spec_helper'

describe Immutable::Vector do
  describe '#count' do
    it 'returns the number of elements' do
      V[:a, :b, :c].count.should == 3
    end

    it 'returns the number of elements that equal the argument' do
      V[:a, :b, :b, :c].count(:b).should == 2
    end

    it 'returns the number of element for which the block evaluates to true' do
      V[:a, :b, :c].count { |s| s != :b }.should == 2
    end
  end
end