from importlib import import_module from types import SimpleNamespace from unittest.mock import MagicMock, patch from django.core.exceptions import ValidationError from django.template.loader import render_to_string from django.test import SimpleTestCase from django.urls import resolve, reverse from netbox_utilities.rack_width import ( _cleanup_unracked_placement, available_units_for_device, horizontal_interval, include_rack_width_in_fieldsets, intervals_cover_full_width, intervals_overlap, normalize_width_position, placement_rectangles_overlap, stage_width_position, ) class RackWidthTest(SimpleTestCase): def test_adds_rack_width_fields_to_existing_location_fieldset(self): from utilities.forms.rendering import FieldSet original = (FieldSet("site", "rack", "position", "latitude", name="Location"),) extended = include_rack_width_in_fieldsets(original) self.assertEqual( extended[0].items, ( "site", "rack", "position", "utilities_rack_width", "utilities_horizontal_position", "latitude", ), ) self.assertEqual(original[0].items, ("site", "rack", "position", "latitude")) def test_appends_visible_fallback_fieldset_when_position_is_missing(self): from utilities.forms.rendering import FieldSet extended = include_rack_width_in_fieldsets((FieldSet("name", name="Device"),)) self.assertEqual(extended[-1].name, "Rackbreite im Rack") self.assertEqual(extended[-1].items, ("utilities_rack_width", "utilities_horizontal_position")) def test_device_edit_view_uses_explicit_rack_width_form(self): from netbox.registry import registry edit_view = next(view["view"] for view in registry["views"]["dcim"]["device"] if view["name"] == "edit") self.assertEqual(edit_view.__name__, "RackWidthDeviceEditView") self.assertEqual(edit_view.form.__name__, "RackWidthDeviceForm") self.assertIn("utilities_rack_width", edit_view.form.base_fields) self.assertIn("utilities_horizontal_position", edit_view.form.base_fields) def test_resolved_device_edit_page_renders_rack_width_fields(self): from dcim.models import Device from utilities.forms.rendering import FieldSet object_type = SimpleNamespace(pk=1, model_class=lambda: Device) with ( patch("core.models.ObjectType.objects.get_for_model", return_value=object_type), patch( "django.contrib.contenttypes.models.ContentType.objects.get_for_model", return_value=object_type, ), patch("extras.models.CustomField.objects.get_for_model", return_value=[]), patch( "netbox_utilities.runtime._get_database_settings", return_value={"tenant_required": True}, ), ): url = reverse("dcim:device_edit", kwargs={"pk": 1}) view_class = resolve(url).func.view_class base_form = view_class.form.__mro__[1] with patch.object( base_form, "fieldsets", (FieldSet("site", "rack", "position", "face", "latitude", name="Location"),), ): form = view_class.form() rendered_fieldsets = form.fieldsets html = render_to_string("htmx/form.html", {"form": form}) width = 'name="utilities_rack_width"' horizontal_position = 'name="utilities_horizontal_position"' self.assertIn(width, html) self.assertIn(horizontal_position, html) self.assertEqual( rendered_fieldsets[0].items, ( "site", "rack", "position", "utilities_rack_width", "utilities_horizontal_position", "face", "latitude", ), ) def test_normalizes_full_width_to_first_position(self): self.assertEqual(normalize_width_position(1, 4), (1, 1)) def test_rejects_position_outside_selected_width(self): with self.assertRaises(ValidationError): normalize_width_position(2, 3) def test_adjacent_half_widths_do_not_overlap(self): self.assertFalse(intervals_overlap(horizontal_interval(2, 1), horizontal_interval(2, 2))) def test_half_width_overlaps_full_width(self): self.assertTrue(intervals_overlap(horizontal_interval(1, 1), horizontal_interval(2, 2))) def test_two_halves_cover_full_width(self): self.assertTrue(intervals_cover_full_width([horizontal_interval(2, 1), horizontal_interval(2, 2)])) def test_single_half_does_not_cover_full_width(self): self.assertFalse(intervals_cover_full_width([horizontal_interval(2, 1)])) def test_same_unit_adjacent_devices_do_not_collide(self): self.assertFalse(placement_rectangles_overlap(10, 1, 2, 1, 10, 1, 2, 2)) def test_multi_unit_device_collides_only_on_same_horizontal_area(self): self.assertTrue(placement_rectangles_overlap(10, 2, 2, 1, 11, 1, 2, 1)) self.assertFalse(placement_rectangles_overlap(10, 2, 2, 1, 11, 1, 2, 2)) def test_stages_width_without_requiring_an_already_assigned_rack(self): device = SimpleNamespace() stage_width_position(device, 2, 2) self.assertEqual(device._netbox_utilities_rack_width, 2) self.assertEqual(device._netbox_utilities_horizontal_position, 2) @patch("netbox_utilities.rack_width.find_placement_conflict", return_value=None) def test_current_position_is_available_without_conflict(self, _find_conflict): rack = SimpleNamespace(units=[1, 1.5, 2, 2.5]) device = SimpleNamespace( position=1, device_type=SimpleNamespace(u_height=1), ) self.assertEqual(available_units_for_device(rack, device), [1]) @patch("netbox_utilities.rack_width.DeviceRackPlacement.objects") def test_unracked_device_removes_stale_width(self, placement_objects): device = SimpleNamespace(pk=12, rack_id=None, position=None) _cleanup_unracked_placement(None, device, using="default") placement_objects.using.assert_called_once_with("default") placement_objects.using.return_value.filter.assert_called_once_with(device_id=12) placement_objects.using.return_value.filter.return_value.delete.assert_called_once_with() class RackWidthMigrationTest(SimpleTestCase): def test_postgresql_migration_drops_core_uniqueness(self): migration = import_module("netbox_utilities.migrations.0007_devicerackplacement") schema_editor = SimpleNamespace( connection=SimpleNamespace(vendor="postgresql"), execute=MagicMock(), ) migration.drop_core_rack_position_constraint(None, schema_editor) statement = schema_editor.execute.call_args.args[0] self.assertIn("DROP CONSTRAINT IF EXISTS", statement) self.assertIn("dcim_device_unique_rack_position_face", statement)