diff --git a/helpdesk_portal_ticket_priority_form/tests/__init__.py b/helpdesk_portal_ticket_priority_form/tests/__init__.py
new file mode 100644
index 0000000..0643380
--- /dev/null
+++ b/helpdesk_portal_ticket_priority_form/tests/__init__.py
@@ -0,0 +1,4 @@
+# Copyright 2026 Stéphan Sainléger (Elabore)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from . import test_controller
diff --git a/helpdesk_portal_ticket_priority_form/tests/test_controller.py b/helpdesk_portal_ticket_priority_form/tests/test_controller.py
new file mode 100644
index 0000000..c9f6af3
--- /dev/null
+++ b/helpdesk_portal_ticket_priority_form/tests/test_controller.py
@@ -0,0 +1,127 @@
+# Copyright 2026 Stéphan Sainléger (Elabore)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import http
+from odoo.tests.common import HttpCase, TransactionCase, tagged
+
+
+@tagged("post_install", "-at_install")
+class TestPriorityModel(TransactionCase):
+    def test_ticket_creation_with_priority(self):
+        category = self.env["helpdesk.ticket.category"].create({"name": "Test"})
+        ticket = self.env["helpdesk.ticket"].create(
+            {
+                "name": "Test priority ticket",
+                "description": "desc",
+                "category_id": category.id,
+                "priority": "3",
+            }
+        )
+        self.assertEqual(ticket.priority, "3")
+
+    def test_ticket_creation_without_priority_uses_default(self):
+        category = self.env["helpdesk.ticket.category"].create({"name": "Test"})
+        ticket = self.env["helpdesk.ticket"].create(
+            {
+                "name": "Test default priority",
+                "description": "desc",
+                "category_id": category.id,
+            }
+        )
+        self.assertEqual(ticket.priority, "1")
+
+    def test_ticket_priority_selection_values(self):
+        selection = self.env["helpdesk.ticket"]._fields["priority"].selection
+        self.assertEqual(
+            selection,
+            [
+                ("0", "Low"),
+                ("1", "Medium"),
+                ("2", "High"),
+                ("3", "Very High"),
+            ],
+        )
+
+
+@tagged("post_install", "-at_install")
+class TestSubmitTicketPriority(HttpCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.category = cls.env["helpdesk.ticket.category"].create({"name": "Test"})
+        cls.portal_user = cls.env["res.users"].create(
+            {
+                "name": "Portal Test User",
+                "login": "portal_test_priority",
+                "password": "portal_test_priority",
+                "groups_id": [(6, 0, [cls.env.ref("base.group_portal").id])],
+            }
+        )
+
+    def test_new_ticket_form_lists_all_priorities(self):
+        self.authenticate("portal_test_priority", "portal_test_priority")
+        response = self.url_open("/new/ticket")
+        self.assertEqual(response.status_code, 200)
+        content = response.text
+        self.assertIn('name="priority"', content)
+        for value, label in [
+            ("0", "Low"),
+            ("1", "Medium"),
+            ("2", "High"),
+            ("3", "Very High"),
+        ]:
+            self.assertIn('value="%s"' % value, content)
+            self.assertIn(label, content)
+
+    def test_submit_ticket_with_high_priority(self):
+        self.authenticate("portal_test_priority", "portal_test_priority")
+        self.url_open(
+            "/submitted/ticket",
+            data={
+                "category": str(self.category.id),
+                "subject": "High priority ticket",
+                "description": "Test description",
+                "priority": "2",
+                "csrf_token": http.Request.csrf_token(self),
+            },
+        )
+        ticket = self.env["helpdesk.ticket"].search(
+            [("name", "=", "High priority ticket")]
+        )
+        self.assertTrue(ticket)
+        self.assertEqual(ticket.priority, "2")
+
+    def test_submit_ticket_without_priority(self):
+        self.authenticate("portal_test_priority", "portal_test_priority")
+        self.url_open(
+            "/submitted/ticket",
+            data={
+                "category": str(self.category.id),
+                "subject": "No priority ticket",
+                "description": "Test description",
+                "csrf_token": http.Request.csrf_token(self),
+            },
+        )
+        ticket = self.env["helpdesk.ticket"].search(
+            [("name", "=", "No priority ticket")]
+        )
+        self.assertTrue(ticket)
+        self.assertEqual(ticket.priority, "0")
+
+    def test_submit_ticket_empty_priority_falls_back(self):
+        self.authenticate("portal_test_priority", "portal_test_priority")
+        self.url_open(
+            "/submitted/ticket",
+            data={
+                "category": str(self.category.id),
+                "subject": "Empty priority ticket",
+                "description": "Test description",
+                "priority": "",
+                "csrf_token": http.Request.csrf_token(self),
+            },
+        )
+        ticket = self.env["helpdesk.ticket"].search(
+            [("name", "=", "Empty priority ticket")]
+        )
+        self.assertTrue(ticket)
+        self.assertEqual(ticket.priority, "0")