diff --git a/spec/models/dossier_purge_spec.rb b/spec/models/dossier_purge_spec.rb
new file mode 100644
index 000000000..8ff12a8c2
--- /dev/null
+++ b/spec/models/dossier_purge_spec.rb
@@ -0,0 +1,33 @@
+describe Dossier, type: :model do
+  describe '.purge_discarded' do
+    it 'discards brouillon, en_construction and termine' do
+      [
+        :en_brouillon_expired_to_delete,
+        :en_construction_expired_to_delete,
+        :termine_expired_to_delete
+      ].each do |scope|
+        dossier = double(purge_discarded: true)
+        expect(dossier).to receive(:purge_discarded)
+
+        collection = double(find_each: true)
+        expect(collection).to receive(:find_each) { |&block| block.call(dossier) }
+
+        expect(Dossier).to receive(scope).and_return(collection)
+      end
+
+      Dossier.purge_discarded
+    end
+  end
+
+  describe '#purge_discarded' do
+    let(:dossier) { create(:dossier) }
+
+    it 'creates a deleted dossier, purge the dols and then destroy' do
+      expect(DeletedDossier).to receive(:create_from_dossier)
+      expect(dossier.dossier_operation_logs).to receive(:purge_discarded)
+      expect(dossier).to receive(:destroy)
+
+      dossier.purge_discarded
+    end
+  end
+end