base_spec.rb

require 'rspec'
require_relative 'base'

describe Base do
  describe '#smallest' do
    it do
      expect(subject.smallest('1')).to eq('base 2 => 1')
    end

    it do
      expect(subject.smallest(21)).to eq('base 3 => 7')
    end

    it do
      expect(subject.smallest('ab3')).to eq('base 12 => 1575')
    end

    it do
      expect(subject.smallest('ff')).to eq('base 16 => 255')
    end

    it do
      expect(subject.smallest(0)).to eq('base 1 => 0')
    end
  end

  describe '#to_dec' do
    it do
      expect(subject.to_dec('66', 8)).to eq(54)
    end

    it do
      expect(subject.to_dec(11011, 2)).to eq(27)
    end

    it do
      expect(subject.to_dec('500', 10)).to eq(500)
    end
  end

  describe '#all_bases' do
    it do
      expected = 'base 3 => 7
base 4 => 9
base 5 => 11
base 6 => 13
base 7 => 15
base 8 => 17
base 9 => 19
base 10 => 21
base 11 => 23
base 12 => 25
base 13 => 27
base 14 => 29
base 15 => 31
base 16 => 33'
      expect(subject.all_bases(21)).to eq(expected)
    end

    it do
      expected = 'base 1 => 0
base 2 => 0
base 3 => 0
base 4 => 0
base 5 => 0
base 6 => 0
base 7 => 0
base 8 => 0
base 9 => 0
base 10 => 0
base 11 => 0
base 12 => 0
base 13 => 0
base 14 => 0
base 15 => 0
base 16 => 0'
      expect(subject.all_bases(0)).to eq(expected)
    end
  end
end