storage_spec.rb

require 'temp_crawler/storage'

describe Storage do
  subject(:storage) { described_class.new(name: 'name') }

  before { storage.clear }

  describe '#add(value)' do
    it 'adds a uniq value' do
      expect { storage.add('*') }.to change { storage.size }.by(1)
      expect { storage.add('*') }.to change { storage.size }.by(0)
    end
  end

  describe '#all' do
    it 'returns added values' do
      3.times { |i| storage.add(i) }
      expect(storage.all).to eq(['0', '1', '2'])
    end
  end

  describe '#size' do
    it 'returns a number of added values' do
      5.times { |i| storage.add(i) }
      expect(storage.size).to eq(5)
    end
  end

  describe '#clear' do
    it 'removes added values' do
      storage.add('^_^')
      storage.clear
      expect(storage.all).to be_empty
    end
  end
end