[FIX] l10n_br_account: state tests when no EDI

since OCA#3012
when l10n_br_fiscal_edi is not installed, these tests were failing

Author: rvalyi

l10n_br_account/tests/test_account_move_lc.py

@@ -1775,16 +1775,17 @@ def test_change_states(self):
         self.assertEqual(document_id.state, "em_digitacao")
         self.move_out_venda.action_post()
         self.assertEqual(self.move_out_venda.state, "posted")
-        self.assertEqual(document_id.state, "a_enviar")
-        self.move_out_venda.button_draft()
-        self.assertEqual(self.move_out_venda.state, "draft")
-        self.assertEqual(document_id.state, "em_digitacao")
-        document_id.action_document_confirm()
-        self.assertEqual(self.move_out_venda.state, "posted")
-        self.assertEqual(document_id.state, "a_enviar")
-        document_id.action_document_back2draft()
-        self.assertEqual(self.move_out_venda.state, "draft")
-        self.assertEqual(document_id.state, "em_digitacao")
+        if hasattr(self, "document_back2draft"):
+            self.assertEqual(document_id.state, "a_enviar")
+            self.move_out_venda.button_draft()
+            self.assertEqual(self.move_out_venda.state, "draft")
+            self.assertEqual(document_id.state, "em_digitacao")
+            document_id.action_document_confirm()
+            self.assertEqual(self.move_out_venda.state, "posted")
+            self.assertEqual(document_id.state, "a_enviar")
+            document_id.action_document_back2draft()
+            self.assertEqual(self.move_out_venda.state, "draft")
+            self.assertEqual(document_id.state, "em_digitacao")
 
     def test_document_deny(self):
         document_id = self.move_out_venda.fiscal_document_id