describe 'reader' do
  shared_examples 'it has no public attr_reader' do
    it 'does not define a public attr_reader' do
      expect(subject).not_to respond_to :foo
      expect(subject).not_to respond_to :bar
    end
  end

  context 'with reader: :public or no reader: option' do
    subject do
      class Test::Foo
        extend Dry::Initializer

        param  :foo
        param  :foo2, reader: :public
        option :bar
        option :bar2, reader: :public
      end

      Test::Foo.new 1, 2, bar: 3, bar2: 4
    end

    it 'defines a public attr_reader by default' do
      expect(subject).to respond_to(:foo, :foo2)
      expect(subject).to respond_to :bar
      expect(subject).to respond_to :bar2
    end
  end

  context 'with reader: false' do
    before do
      class Test::Foo
        extend Dry::Initializer

        param  :foo, reader: false
        option :bar, reader: false
      end
    end

    subject { Test::Foo.new 1, bar: 2 }

    it_behaves_like 'it has no public attr_reader'

    it 'keeps assigning variables' do
      expect(subject.instance_variable_get(:@foo)).to eql 1
      expect(subject.instance_variable_get(:@bar)).to eql 2
    end
  end

  context 'with reader: :private' do
    before do
      class Test::Foo
        extend Dry::Initializer

        param  :foo, reader: :private
        option :bar, reader: :private
      end
    end

    subject { Test::Foo.new 1, bar: 2 }

    it_behaves_like 'it has no public attr_reader'

    it 'adds a private attr_reader' do
      expect(subject.send(:foo)).to eql 1
      expect(subject.send(:bar)).to eql 2
    end
  end

  context 'with reader: :protected' do
    subject do
      class Test::Foo
        extend Dry::Initializer

        param  :foo, reader: :protected
        option :bar, reader: :protected
      end

      Test::Foo.new 1, bar: 2
    end

    it 'adds a protected attr_reader' do
      protected_instance_methods = subject.class.protected_instance_methods
      expect(protected_instance_methods).to match_array(%i[foo bar])
    end
  end
end