describe KnapsackPro::Config::CI::GitlabCI do
  let(:env) { {} }

  before do
    stub_const('ENV', env)
  end

  it { should be_kind_of KnapsackPro::Config::CI::Base }

  describe '#node_total' do
    subject { described_class.new.node_total }

    it { should be nil }
  end

  describe '#node_index' do
    subject { described_class.new.node_index }

    it { should be nil }
  end

  describe '#node_build_id' do
    subject { described_class.new.node_build_id }

    context 'when Gitlab Release 9.0+ and environment exists' do
      let(:env) { { 'CI_JOB_ID' => 7046507 } }
      it { should eql 7046507 }
    end

    context 'when Gitlab Release 8.x and environment exists' do
      let(:env) { { 'CI_BUILD_ID' => 7046508 } }
      it { should eql 7046508 }
    end

    context "when environment doesn't exist" do
      it { should be nil }
    end
  end

  describe '#commit_hash' do
    subject { described_class.new.commit_hash }

    context 'when Gitlab Release 9.0+ and environment exists' do
      let(:env) { { 'CI_COMMIT_SHA' => '4e0c4feec2267261fbcc060e82d7776e' } }
      it { should eql '4e0c4feec2267261fbcc060e82d7776e' }
    end

    context 'when Gitlab Release 8.x and environment exists' do
      let(:env) { { 'CI_BUILD_REF' => 'f76c468e3e1d570f71f5822b1e48bb04' } }
      it { should eql 'f76c468e3e1d570f71f5822b1e48bb04' }
    end

    context "when environment doesn't exist" do
      it { should be nil }
    end
  end

  describe '#branch' do
    subject { described_class.new.branch }

    context 'when Gitlab Release 9.0+ and environment exists' do
      let(:env) { { 'CI_COMMIT_REF_NAME' => 'master' } }
      it { should eql 'master' }
    end

    context 'when Gitlab Release 8.x and environment exists' do
      let(:env) { { 'CI_BUILD_REF_NAME' => 'master' } }
      it { should eql 'master' }
    end

    context "when environment doesn't exist" do
      it { should be nil }
    end
  end

  describe '#project_dir' do
    subject { described_class.new.project_dir }

    context 'when environment exists' do
      let(:env) { { 'CI_PROJECT_DIR' => '/home/user/knapsack_pro-ruby' } }
      it { should eql '/home/user/knapsack_pro-ruby' }
    end

    context "when environment doesn't exist" do
      it { should be nil }
    end
  end
end