[Fix #866] Allow use of non-breaking spaces in balise in attestation template

app/models/attestation_template.rb

@@ -128,17 +128,27 @@ class AttestationTemplate < ApplicationRecord
         .select { |dossier_champ| dossier_champ.libelle == tag[:libelle] }
         .first
 
-      acc.gsub("--#{tag[:libelle]}--", champ.to_s)
+      replace_tag(acc, tag, champ)
     end
   end
 
   def replace_tags_with_values_from_data(text, tags, data)
     if data.present?
       tags.inject(text) do |acc, tag|
-        acc.gsub("--#{tag[:libelle]}--", data.send(tag[:target].to_sym).to_s)
+        replace_tag(acc, tag, data.send(tag[:target].to_sym))
       end
     else
       text
     end
   end
+
+  def replace_tag(text, tag, value)
+    libelle = Regexp.quote(tag[:libelle])
+
+    # allow any kind of space (non-breaking or other) in the tag’s libellé to match any kind of space in the template
+    # (the '\\ |' is there because plain ASCII spaces were escaped by preceding Regexp.quote)
+    libelle.gsub!(/\\ |[[:blank:]]/, "[[:blank:]]")
+
+    text.gsub(/--#{libelle}--/, value.to_s)
+  end
 end

spec/models/attestation_template_spec.rb

@@ -283,5 +283,45 @@ describe AttestationTemplate, type: :model do
         end
       end
     end
+
+    context "match breaking and non breaking spaces" do
+      before do
+        c = dossier.champs.first
+        c.value = 'valeur'
+        c.save
+      end
+
+      context "when the tag contains a non breaking space" do
+        let(:template_body) { 'body --mon tag--' }
+
+        context 'and the champ contains the non breaking space' do
+          let(:types_de_champ) { [create(:type_de_champ_public, libelle: 'mon tag')] }
+
+          it { expect(view_args[:body]).to eq('body valeur') }
+        end
+
+        context 'and the champ has an ordinary space' do
+          let(:types_de_champ) { [create(:type_de_champ_public, libelle: 'mon tag')] }
+
+          it { expect(view_args[:body]).to eq('body valeur') }
+        end
+      end
+
+      context "when the tag contains an ordinay space" do
+        let(:template_body) { 'body --mon tag--' }
+
+        context 'and the champ contains a non breaking space' do
+          let(:types_de_champ) { [create(:type_de_champ_public, libelle: 'mon tag')] }
+
+          it { expect(view_args[:body]).to eq('body valeur') }
+        end
+
+        context 'and the champ has an ordinary space' do
+          let(:types_de_champ) { [create(:type_de_champ_public, libelle: 'mon tag')] }
+
+          it { expect(view_args[:body]).to eq('body valeur') }
+        end
+      end
+    end
   end
 end