bug(normalized_address): should not raise an error for addresses without code postal

spec/views/shared/dossiers/_normalized_address.html.haml_spec.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 describe 'shared/dossiers/normalized_address', type: :view do
-  before { render 'shared/dossiers/normalized_address', address: }
+  let(:subject) { render 'shared/dossiers/normalized_address', address: }
 
   context 'given an champ' do
     let(:procedure) { create(:procedure, types_de_champ_public: [{ type: :siret }]) }
@@ -10,7 +10,7 @@ describe 'shared/dossiers/normalized_address', type: :view do
 
     it 'render address' do
       AddressProxy::ADDRESS_PARTS.each do |address_part|
-        expect(rendered).to have_text(address_part)
+        expect(subject).to have_text(address_part)
       end
     end
   end
@@ -20,12 +20,22 @@ describe 'shared/dossiers/normalized_address', type: :view do
     let(:address) { AddressProxy.new(etablissement) }
 
     it 'render address' do
-      expect(rendered).to have_text("6 RUE RAOUL NORDLING")
-      expect(rendered).to have_text("BOIS COLOMBES 92270")
-      expect(rendered).to have_text("92009")
-      expect(rendered).to have_text("92270")
-      expect(rendered).to have_text("Hauts-de-Seine – 92")
-      expect(rendered).to have_text("Île-de-France – 11")
+      expect(subject).to have_text("6 RUE RAOUL NORDLING")
+      expect(subject).to have_text("BOIS COLOMBES 92270")
+      expect(subject).to have_text("92009")
+      expect(subject).to have_text("92270")
+      expect(subject).to have_text("Hauts-de-Seine – 92")
+      expect(subject).to have_text("Île-de-France – 11")
+    end
+  end
+
+  context 'given a partial etablissement address' do
+    let(:etablissement) { create(:etablissement) }
+    before { allow(etablissement).to receive(:code_postal).and_return(nil) }
+    let(:address) { AddressProxy.new(etablissement) }
+
+    it 'render address' do
+      expect { subject }.not_to raise_error
     end
   end
 end