fixup! [#3049] Fix end-date of plan can precede that of action templates

src/open_inwoner/plans/tests/test_views.py

@@ -491,6 +491,38 @@ def test_plan_create_plan_validation_error_reselects_template_and_contact(self):
         elem = response.pyquery("#id_plan_contacts_1")[0]
         self.assertEqual(elem.attrib.get("checked"), "checked")
 
+    def test_plan_create_plan_end_date_cannot_precede_action_end_dates(self):
+        plan_template = PlanTemplateFactory(file=None)
+        ActionTemplateFactory(plan_template=plan_template)
+        # make sure we have only one plan
+        self.assertEqual(Plan.objects.count(), 1)
+
+        # Purposely make the dates of the actions much higher
+        #  than the date of the plan
+        for actionTemplate in plan_template.actiontemplates.all():
+            actionTemplate.end_in_days = 10000
+            actionTemplate.save()
+
+        response = self.app.get(self.create_url, user=self.user)
+        form = response.forms["plan-form"]
+        form["title"] = "Plan"
+        form["end_date"] = "2025-02-23"
+        form["plan_contacts"] = [self.contact.pk]
+        form["template"] = plan_template.pk
+        response = form.submit()
+        self.assertEqual(response.status_code, 200)
+
+        # Confirm the mistake was caught
+        self.assertContains(
+            response,
+            _(
+                "The end date of the plan cannot precede the end dates of the actions in the selected template."
+            ),
+        )
+
+        # nothing was created
+        self.assertEqual(Plan.objects.count(), 1)
+
     def test_plan_create_contains_contact_create_link_when_no_contacts_exist(self):
         self.user.user_contacts.remove(self.contact)
         response = self.app.get(self.create_url, user=self.user)