helpers_container_spec.rb

require 'rspec'
require 'rspec/its'
require_relative '../libraries/helpers_container'

class FakeContainerForTestingImageProperty
  include DockerCookbook::DockerHelpers::Container

  def initialize(attributes = {})
    @attributes = attributes
  end

  def repo(value = nil)
    attributes['repo'] = value if value
    attributes['repo']
  end

  def tag(value = nil)
    attributes['tag'] = value if value
    attributes['tag'] || 'latest'
  end

  private

  attr_reader :attributes
end

describe DockerCookbook::DockerHelpers::Container do
  let(:helper) { FakeContainerForTestingImageProperty.new }

  describe '#image' do
    subject { helper }

    context "If you say: repo 'blah'" do
      before { helper.repo 'blah' }
      its(:image) { is_expected.to eq('blah:latest') }
    end

    context "If you say: repo 'blah'; tag '3.1'" do
      before do
        helper.repo 'blah'
        helper.tag '3.1'
      end
      its(:image) { is_expected.to eq('blah:3.1') }
    end

    context "If you say: image 'blah'" do
      before { helper.image 'blah' }
      its(:repo) { is_expected.to eq('blah') }
      its(:tag) { is_expected.to eq('latest') }
    end

    context "If you say: image 'blah:3.1'" do
      before { helper.image 'blah:3.1' }
      its(:repo) { is_expected.to eq('blah') }
      its(:tag) { is_expected.to eq('3.1') }
    end

    context "If you say: image 'repo/blah'" do
      before { helper.image 'repo/blah' }
      its(:repo) { is_expected.to eq('repo/blah') }
      its(:tag) { is_expected.to eq('latest') }
    end

    context "If you say: image 'repo/blah:3.1'" do
      before { helper.image 'repo/blah:3.1' }
      its(:repo) { is_expected.to eq('repo/blah') }
      its(:tag) { is_expected.to eq('3.1') }
    end

    context "If you say: image 'repo:1337/blah'" do
      before { helper.image 'repo:1337/blah' }
      its(:repo) { is_expected.to eq('repo:1337/blah') }
      its(:tag) { is_expected.to eq('latest') }
    end

    context "If you say: image 'repo:1337/blah:3.1'" do
      before { helper.image 'repo:1337/blah:3.1' }
      its(:repo) { is_expected.to eq('repo:1337/blah') }
      its(:tag) { is_expected.to eq('3.1') }
    end
  end
end