[Fix #3578] No tags for champs that cannot have user input anyway

app/models/types_de_champ/explication_type_de_champ.rb

@@ -1,2 +1,5 @@
 class TypesDeChamp::ExplicationTypeDeChamp < TypesDeChamp::TextTypeDeChamp
+  def tags_for_template
+    []
+  end
 end

app/models/types_de_champ/header_section_type_de_champ.rb

@@ -1,2 +1,5 @@
 class TypesDeChamp::HeaderSectionTypeDeChamp < TypesDeChamp::TypeDeChampBase
+  def tags_for_template
+    []
+  end
 end

spec/models/concern/tags_substitution_concern_spec.rb

@@ -321,9 +321,20 @@ describe TagsSubstitutionConcern, type: :model do
   describe 'tags' do
     subject { template_concern.tags }
 
-    let(:types_de_champ) { [create(:type_de_champ, libelle: 'public')] }
+    let(:types_de_champ) do
+      [
+        create(:type_de_champ, libelle: 'public'),
+        create(:type_de_champ_header_section, libelle: 'entête de section'),
+        create(:type_de_champ_explication, libelle: 'explication')
+      ]
+    end
     let(:types_de_champ_private) { [create(:type_de_champ, :private, libelle: 'privé')] }
 
+    context 'do not generate tags for champs that cannot have usager content' do
+      it { is_expected.not_to include(include({ libelle: 'entête de section' })) }
+      it { is_expected.not_to include(include({ libelle: 'explication' })) }
+    end
+
     context 'when generating a document for a dossier terminé' do
       it { is_expected.to include(include({ libelle: 'motivation' })) }
       it { is_expected.to include(include({ libelle: 'date de décision' })) }