gestionnaire: move commentaire creation into a service

app/controllers/new_gestionnaire/dossiers_controller.rb

@@ -113,15 +113,7 @@ module NewGestionnaire
     end
 
     def create_commentaire
-      commentaire_hash = commentaire_params.merge(email: current_gestionnaire.email, dossier: dossier)
-
-      # avoid simple_format replacing '' by '<p></p>'
-      # and thus skipping the not empty constraint on commentaire's body
-      if commentaire_hash[:body].present?
-        commentaire_hash[:body] = simple_format(commentaire_hash[:body])
-      end
-
-      @commentaire = Commentaire.new(commentaire_hash)
+      @commentaire = CommentaireService.create(current_gestionnaire, dossier, commentaire_params)
 
       if @commentaire.save
         current_gestionnaire.follow(dossier)

app/services/commentaire_service.rb

@@ -0,0 +1,17 @@
+class CommentaireService
+  class << self
+    def create(sender, dossier, params)
+      attributes = params.merge(email: sender.email, dossier: dossier)
+
+      # If the user submits a empty message, simple_format will replace '' by '<p></p>',
+      # and thus bypass the not-empty constraint on commentaire's body.
+      #
+      # To avoid this, format the message only if a body is present in the first place.
+      if attributes[:body].present?
+        attributes[:body] = ActionController::Base.helpers.simple_format(attributes[:body])
+      end
+
+      Commentaire.new(attributes)
+    end
+  end
+end

spec/controllers/new_gestionnaire/dossiers_controller_spec.rb

@@ -269,7 +269,7 @@ describe NewGestionnaire::DossiersController, type: :controller do
   describe "#create_commentaire" do
     let(:saved_commentaire) { dossier.commentaires.first }
     let(:body) { "avant\napres" }
-    let(:file) { nil }
+    let(:file) { Rack::Test::UploadedFile.new("./spec/support/files/piece_justificative_0.pdf", 'application/pdf') }
     let(:scan_result) { true }
 
     subject {
@@ -287,35 +287,23 @@ describe NewGestionnaire::DossiersController, type: :controller do
       allow(ClamavService).to receive(:safe_file?).and_return(scan_result)
     end
 
-    it do
-      subject
-
-      expect(saved_commentaire.body).to eq("<p>avant\n<br />apres</p>")
-      expect(saved_commentaire.email).to eq(gestionnaire.email)
-      expect(saved_commentaire.dossier).to eq(dossier)
-      expect(response).to redirect_to(messagerie_gestionnaire_dossier_path(dossier.procedure, dossier))
+    it "creates a commentaire" do
+      expect { subject }.to change(Commentaire, :count).by(1)
       expect(gestionnaire.followed_dossiers).to include(dossier)
-      expect(saved_commentaire.file.present?).to eq(false)
+
+      expect(response).to redirect_to(messagerie_gestionnaire_dossier_path(dossier.procedure, dossier))
+      expect(flash.notice).to be_present
     end
 
-    it { expect { subject }.to change(Commentaire, :count).by(1) }
-
-    context "without a body" do
-      let(:body) { nil }
-
-      it { expect { subject }.not_to change(Commentaire, :count) }
-    end
-
-    context "with a file" do
-      let(:file) { Rack::Test::UploadedFile.new("./spec/support/files/piece_justificative_0.pdf", 'application/pdf') }
-
-      it { subject; expect(saved_commentaire.file.present?).to eq(true) }
-      it { expect { subject }.to change(Commentaire, :count).by(1) }
-
-      context "and a virus" do
+    context "when the commentaire creation fails" do
       let(:scan_result) { false }
 
-        it { expect { subject }.not_to change(Commentaire, :count) }
+      it "renders the messagerie page with the invalid commentaire" do
+        expect { subject }.not_to change(Commentaire, :count)
+
+        expect(response).to render_template :messagerie
+        expect(flash.alert).to be_present
+        expect(assigns(:commentaire).body).to eq("<p>avant\n<br />apres</p>")
       end
     end
   end

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