feat: add collapsible resizable navigation

netbox_utilities/tests/test_navigation_helpers.py

@@ -1,6 +1,13 @@
 from django.test import SimpleTestCase
 
-from netbox_utilities.navigation_helpers import normalize_preferences
+from netbox_utilities.navigation_helpers import (
+    SIDEBAR_WIDTH_DEFAULT,
+    SIDEBAR_WIDTH_MAX,
+    SIDEBAR_WIDTH_MIN,
+    normalize_preferences,
+    normalize_sidebar_width,
+    update_sidebar_layout,
+)
 
 
 class NormalizePreferencesTest(SimpleTestCase):
@@ -19,3 +26,29 @@ class NormalizePreferencesTest(SimpleTestCase):
 
         self.assertEqual(order, ["devices", "vpn"])
         self.assertEqual(hidden, [])
+
+
+class SidebarLayoutTest(SimpleTestCase):
+    def test_normalizes_width_to_supported_steps(self):
+        self.assertEqual(normalize_sidebar_width(None), SIDEBAR_WIDTH_DEFAULT)
+        self.assertEqual(normalize_sidebar_width(100), SIDEBAR_WIDTH_MIN)
+        self.assertEqual(normalize_sidebar_width(500), SIDEBAR_WIDTH_MAX)
+        self.assertEqual(normalize_sidebar_width(300), 312)
+
+    def test_toggles_icon_only_mode(self):
+        collapsed, width = update_sidebar_layout(False, SIDEBAR_WIDTH_DEFAULT, "toggle")
+
+        self.assertTrue(collapsed)
+        self.assertEqual(width, SIDEBAR_WIDTH_DEFAULT)
+
+    def test_resizes_within_limits(self):
+        self.assertEqual(update_sidebar_layout(False, SIDEBAR_WIDTH_MIN, "smaller")[1], SIDEBAR_WIDTH_MIN)
+        self.assertEqual(update_sidebar_layout(False, SIDEBAR_WIDTH_MAX, "larger")[1], SIDEBAR_WIDTH_MAX)
+        self.assertLess(
+            update_sidebar_layout(False, SIDEBAR_WIDTH_DEFAULT, "smaller")[1],
+            SIDEBAR_WIDTH_DEFAULT,
+        )
+
+    def test_rejects_unknown_action(self):
+        with self.assertRaisesMessage(ValueError, "Unbekannte Navigationsaktion"):
+            update_sidebar_layout(False, SIDEBAR_WIDTH_DEFAULT, "invalid")