stop as soon as error is seen

src/strass/strass_app/forms.py

@@ -378,6 +378,8 @@ class CandidateForm(ModelFormWithReadOnly):
 
     def clean(self):
         cleaned_data = super().clean()
+        if self.errors:
+            return cleaned_data
         if len(cleaned_data.get("profiles", [])) > live_settings.max_num_profile__int > 0:
             raise ValidationError(
                 {

src/strass/strass_app/tests/test_candidate_apply.py

@@ -1191,6 +1191,46 @@ class TestCandidateApply(TooledTestCase):
             "all question must have an answer, even empty",
         )
 
+    def test_apply_with_wrong_email(self):
+        live_settings.show_email_as_message = False
+        live_settings.max_num_referee = 0
+        live_settings.cv_enabled = False
+        load_demo.create_candidate_questions(load_demo.create_faker_instance(0))
+        steps = list()
+
+        #######################################################################
+        # Apply
+        #######################################################################
+        candidate_wizard = "candidate_wizard"
+        url = reverse('strass:candidate-apply')
+        # self.client.force_login(self.user)
+        response_home = self.client.get(url, follow=True)
+        target = response_home.redirect_chain[0][0]
+        step_name = target.split("/")[-2]
+        form_data = {f"{candidate_wizard}-current_step": target.split("/")[-2]}
+        response = self.client.post(target, form_data, follow=True)
+        self.assertEqual(response.status_code, 200)
+        steps.append(WizardStep(target=target, response=response, form_data=form_data, step_name=step_name))
+        del target, response, form_data, step_name
+        del response_home, url
+
+        target = steps[-1].response.redirect_chain[0][0]
+
+        step_name = target.split("/")[-2]
+        cv = open(os.path.join(self.test_data, "cv.pdf"), "rb")
+        form_data = {
+            step_name + "-first_name": "Ada",
+            step_name + "-last_name": "Lovelace",
+            step_name + "-email": "ada.lovelace@pasteurfr", # dot is missing
+            step_name + "-profiles": "2",
+            step_name + "-motivation": "Yes I am !",
+            step_name + "-cv": SimpleUploadedFile(cv.name, cv.read(), content_type="application/pdf"),
+            step_name + "-lang": "en",
+            f"{candidate_wizard}-current_step": step_name,
+        }
+        response = self.client.post(target, form_data, follow=False)
+        self.assertEqual(response.status_code, 200)
+
     def test_reviewers_notification(self):
         fake = Faker()
         fake.seed_instance(0)