describe Knapsack::Config do
  describe '.report_path' do
    subject { described_class.report_path }

    context 'when ENV exists' do
      let(:report_path) { 'custom_knapsack_report.json' }
      before { stub_const("ENV", { 'KNAPSACK_REPORT_PATH' => report_path }) }
      it { should eql report_path }
    end

    context "when ENV doesn't exist" do
      it { should eql 'knapsack_report.json' }
    end
  end

  describe '.ci_node_total' do
    subject { described_class.ci_node_total }

    context 'when ENV exists' do
      context 'when CI_NODE_TOTAL has value' do
        before { stub_const("ENV", { 'CI_NODE_TOTAL' => 5 }) }
        it { should eql 5 }
      end

      context 'when CIRCLE_NODE_TOTAL has value' do
        before { stub_const("ENV", { 'CIRCLE_NODE_TOTAL' => 4 }) }
        it { should eql 4 }
      end
    end

    context "when ENV doesn't exist" do
      it { should eql 1 }
    end
  end

  describe '.ci_node_index' do
    subject { described_class.ci_node_index }

    context 'when ENV exists' do
      context 'when CI_NODE_INDEX has value' do
        before { stub_const("ENV", { 'CI_NODE_INDEX' => 3 }) }
        it { should eql 3 }
      end

      context 'when CIRCLE_NODE_INDEX has value' do
        before { stub_const("ENV", { 'CIRCLE_NODE_INDEX' => 2 }) }
        it { should eql 2 }
      end
    end

    context "when ENV doesn't exist" do
      it { should eql 0 }
    end
  end

  describe '.spec_pattern' do
    subject { described_class.spec_pattern }

    context 'when ENV exists' do
      let(:spec_pattern) { 'custom_spec/**/*_spec.rb' }
      before { stub_const("ENV", { 'KNAPSACK_SPEC_PATTERN' => spec_pattern }) }
      it { should eql spec_pattern }
    end

    context "when ENV doesn't exist" do
      it { should eql 'spec/**/*_spec.rb' }
    end
  end

  describe '.enable_time_offset_warning' do
    subject { described_class.enable_time_offset_warning }
    it { should be true }
  end

  describe '.time_offset_in_seconds' do
    subject { described_class.time_offset_in_seconds }
    it { should eql 30 }
  end

  describe '.generate_report' do
    subject { described_class.generate_report }

    context 'when ENV exists' do
      before { stub_const("ENV", { 'KNAPSACK_GENERATE_REPORT' => true }) }
      it { should be true }
    end

    context "when ENV doesn't exist" do
      it { should be false }
    end
  end
end