diff --git a/spec/components/editable_champ/drop_down_list_component_spec.rb b/spec/components/editable_champ/drop_down_list_component_spec.rb
new file mode 100644
index 000000000..80c5f08f7
--- /dev/null
+++ b/spec/components/editable_champ/drop_down_list_component_spec.rb
@@ -0,0 +1,142 @@
+# frozen_string_literal: true
+
+describe EditableChamp::DropDownListComponent, type: :component do
+  let(:procedure) { create(:procedure, types_de_champ_public: [{ type: :drop_down_list }]) }
+  let(:dossier) { create(:dossier, procedure:) }
+  let(:tdc) { procedure.active_revision.types_de_champ.first }
+  let(:champ) { dossier.champs.first }
+
+  subject(:render) do
+    component = nil
+    ActionView::Base.empty.form_for(champ, url: '/') do |form|
+      component = EditableChamp::EditableChampComponent.new(champ:, form:)
+    end
+
+    render_inline(component)
+  end
+
+  let(:fieldset) { page.find('fieldset') }
+  let(:radios) { fieldset.all('input[type="radio"]') }
+  def aria_labelledby(el) = el['aria-labelledby']&.split
+  def aria_describedby(el) = el['aria-describedby']&.split
+
+  describe 'with radio buttons' do
+    def no_aria_on_radio? = radios.all? { aria_labelledby(_1).nil? && aria_describedby(_1).nil? }
+
+    context 'when the champ has a description' do
+      it do
+        render
+
+        expect(aria_labelledby(fieldset)).to eq([champ.labelledby_id, champ.describedby_id])
+        expect(no_aria_on_radio?).to be true
+      end
+
+      context 'and the champ has an error' do
+        before { champ.errors.add(:value, 'error') }
+
+        it do
+          render
+
+          expect(aria_labelledby(fieldset)).to eq([champ.labelledby_id, champ.describedby_id, champ.error_id])
+          expect(no_aria_on_radio?).to be true
+        end
+      end
+    end
+
+    context 'when the champ has no description' do
+      before { tdc.update!(description: nil) }
+
+      it do
+        render
+
+        expect(aria_labelledby(fieldset)).to eq([champ.labelledby_id])
+        expect(no_aria_on_radio?).to be true
+      end
+
+      context 'and the champ has an error' do
+        before { champ.errors.add(:value, 'error') }
+
+        it do
+          render
+
+          expect(aria_labelledby(fieldset)).to eq([champ.labelledby_id, champ.error_id])
+          expect(no_aria_on_radio?).to be true
+        end
+      end
+    end
+  end
+
+  describe 'with select' do
+    before { tdc.update!(drop_down_options: ('a'..'f').to_a) }
+    let(:select) { page.find('select') }
+
+    it do
+      render
+      expect(page.all('fieldset')).to be_empty
+    end
+
+    describe 'aria-describedby' do
+      subject { render; aria_describedby(select) }
+
+      context 'when the champ has a description' do
+        it { is_expected.to eq([champ.describedby_id]) }
+
+        context 'and the champ has an error' do
+          before { champ.errors.add(:value, 'error') }
+
+          it { is_expected.to eq([champ.describedby_id, champ.error_id]) }
+        end
+      end
+
+      context 'when the champ has no description' do
+        before { tdc.update!(description: nil) }
+
+        it { is_expected.to be_nil }
+
+        context 'and the champ has an error' do
+          before { champ.errors.add(:value, 'error') }
+
+          it { is_expected.to eq([champ.error_id]) }
+        end
+      end
+    end
+  end
+
+  describe 'with a combobox' do
+    before { tdc.update!(drop_down_options: ('a'..'z').to_a) }
+    let(:select) { page.find('select') }
+    let(:react_component) { page.find('react-component') }
+    let(:react_props) { JSON.parse(react_component['props']) }
+
+    it do
+      render
+      expect(page.all('fieldset')).to be_empty
+    end
+
+    describe 'aria-describedby' do
+      subject { render; react_props['aria-describedby']&.split }
+
+      context 'when the champ has a description' do
+        it { is_expected.to eq([champ.describedby_id]) }
+
+        context 'and the champ has an error' do
+          before { champ.errors.add(:value, 'error') }
+
+          it { is_expected.to eq([champ.describedby_id, champ.error_id]) }
+        end
+      end
+
+      context 'when the champ has no description' do
+        before { tdc.update!(description: nil) }
+
+        it { is_expected.to be_nil }
+
+        context 'and the champ has an error' do
+          before { champ.errors.add(:value, 'error') }
+
+          it { is_expected.to eq([champ.error_id]) }
+        end
+      end
+    end
+  end
+end