File: average_spec.rb

package info (click to toggle)
ruby-powerpack 0.1.1-4
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 492 kB
  • sloc: ruby: 819; makefile: 3
file content (21 lines) | stat: -rw-r--r-- 527 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
require 'spec_helper'

unless Enumerable.method_defined? :average
  describe 'Enumerable#average' do
    it 'calculates the average of an enum' do
      expect((1..3).average).to eq(2)
    end

    it 'calculates the average of an array' do
      expect([1, 2, 3, 4].average).to eq(2.5)
    end

    it 'returns nil when invoked on an empty collection' do
      expect([].average).to be_nil
    end

    it 'returns default value when invoked on an empty collection' do
      expect([].average(0)).to be_zero
    end
  end
end