champs: show attachment actions only when the atachment is persisted

Fix #3961

spec/views/shared/attachment/_update.html.haml_spec.rb

@@ -0,0 +1,65 @@
+require 'rails_helper'
+
+describe 'shared/attachment/_update.html.haml', type: :view do
+  let(:champ) { build(:champ_piece_justificative, dossier: create(:dossier)) }
+  let(:attachment) { nil }
+  let(:virus_scan_result) { nil }
+  let(:user_can_destroy) { false }
+
+  subject do
+    form_for(champ.dossier) do |form|
+      render 'shared/attachment/update', {
+        attachment: attachment,
+        user_can_destroy: user_can_destroy,
+        form: form
+      }
+    end
+  end
+
+  it 'renders a form field for uploading a file' do
+    expect(subject).to have_selector('input[type=file]:not(.hidden)')
+  end
+
+  context 'when there is a attached file' do
+    let(:attachment) { champ.piece_justificative_file.attachment }
+
+    it 'renders a form field for uploading a file' do
+      expect(subject).to have_selector('input[type=file]:not(.hidden)')
+    end
+
+    it 'does not renders a link to the unsaved file' do
+      expect(subject).not_to have_content(attachment.filename.to_s)
+    end
+
+    it 'doesn’t render action buttons' do
+      expect(subject).not_to have_link('Remplacer')
+      expect(subject).not_to have_link('Supprimer')
+    end
+
+    context 'and the attachment has been saved' do
+      before { champ.save! }
+
+      it 'renders a link to the file' do
+        expect(subject).to have_content(attachment.filename.to_s)
+      end
+
+      it 'renders action buttons' do
+        expect(subject).to have_button('Remplacer')
+      end
+
+      it 'hides the form field by default' do
+        expect(subject).to have_selector('input[type=file].hidden')
+      end
+
+      it 'hides the Delete button by default' do
+        is_expected.not_to have_link('Supprimer')
+      end
+
+      context 'and the user can delete the attachment' do
+        let(:user_can_destroy) { true }
+
+        it { is_expected.to have_link('Supprimer') }
+      end
+    end
+  end
+end