Add tests and lien_demarche in serialize

app/models/type_de_piece_justificative.rb

@@ -4,4 +4,6 @@ class TypeDePieceJustificative < ActiveRecord::Base
   belongs_to :procedure
 
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
+
+  validates_format_of :lien_demarche, with: URI::regexp
 end

app/serializers/type_de_piece_justificative_serializer.rb

@@ -2,5 +2,6 @@ class TypeDePieceJustificativeSerializer < ActiveModel::Serializer
   attributes :id,
              :libelle,
              :description,
-             :order_place
+             :order_place,
+             :lien_demarche
 end

spec/models/type_de_piece_justificative_spec.rb

@@ -10,6 +10,7 @@ describe TypeDePieceJustificative do
     it { is_expected.to have_db_column(:created_at) }
     it { is_expected.to have_db_column(:updated_at) }
     it { is_expected.to have_db_column(:order_place) }
+    it { is_expected.to have_db_column(:lien_demarche) }
   end
 
   describe 'associations' do
@@ -29,5 +30,12 @@ describe TypeDePieceJustificative do
       # it { is_expected.not_to allow_value('').for(:order_place) }
       it { is_expected.to allow_value(1).for(:order_place) }
     end
+
+    context 'lien_demarche' do
+      it { is_expected.not_to allow_value(nil).for(:lien_demarche) }
+      it { is_expected.not_to allow_value('').for(:lien_demarche) }
+      it { is_expected.not_to allow_value('not-a-link').for(:lien_demarche) }
+      it { is_expected.to allow_value('http://link').for(:lien_demarche) }
+    end
   end
 end