gestionnaire: move commentaire creation into a service

spec/services/commentaire_service_spec.rb

@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+describe CommentaireService do
+  describe '.create' do
+    let(:dossier) { create :dossier }
+    let(:sender) { dossier.user }
+    let(:body) { 'Contenu du message.' }
+    let(:file) { nil }
+    let(:scan_result) { true }
+
+    subject(:commentaire) { CommentaireService.create(sender, dossier, { body: body, file: file }) }
+
+    before do
+      allow(ClamavService).to receive(:safe_file?).and_return(scan_result)
+    end
+
+    it 'creates a new valid commentaire' do
+      expect(commentaire.email).to eq sender.email
+      expect(commentaire.dossier).to eq dossier
+      expect(commentaire.body).to eq '<p>Contenu du message.</p>'
+      expect(commentaire.file).to be_blank
+      expect(commentaire).to be_valid
+    end
+
+    context 'when the body is empty' do
+      let(:body) { nil }
+
+      it 'creates an invalid comment' do
+        expect(commentaire.body).to be nil
+        expect(commentaire.valid?).to be false
+      end
+    end
+
+    context 'when it has a file' do
+      let(:file) { Rack::Test::UploadedFile.new("./spec/support/files/piece_justificative_0.pdf", 'application/pdf') }
+
+      it 'saves the attached file' do
+        expect(commentaire.file).to be_present
+        expect(commentaire).to be_valid
+      end
+
+      context 'and a virus' do
+        let(:scan_result) { false }
+        it { expect(commentaire).not_to be_valid }
+      end
+    end
+  end
+end