feat: allow module quantity input

netbox_utilities/tests/test_bulk_module_form.py

@@ -0,0 +1,58 @@
+from types import SimpleNamespace
+
+from django import forms
+from django.forms.utils import ErrorDict
+from django.test import SimpleTestCase
+
+from netbox_utilities.forms import BulkModuleInstallForm
+
+
+class AvailableModuleBays(list):
+    def count(self):
+        return len(self)
+
+
+class BulkModuleInstallFormTest(SimpleTestCase):
+    def _form_for_clean(self, *, module_bays=None, quantity=None, available_bays=None):
+        form = BulkModuleInstallForm.__new__(BulkModuleInstallForm)
+        forms.Form.__init__(form)
+        form._errors = ErrorDict()
+        form.cleaned_data = {
+            "device": SimpleNamespace(pk=10),
+            "module_bays": module_bays or [],
+            "quantity": quantity,
+        }
+        form.available_module_bays = AvailableModuleBays(available_bays or [])
+        return form
+
+    def test_quantity_selects_first_available_bays(self):
+        available_bays = [SimpleNamespace(pk=1), SimpleNamespace(pk=2), SimpleNamespace(pk=3)]
+        form = self._form_for_clean(quantity=2, available_bays=available_bays)
+
+        cleaned_data = form.clean()
+
+        self.assertEqual(cleaned_data["module_bays"], available_bays[:2])
+        self.assertFalse(form.errors)
+
+    def test_quantity_cannot_exceed_available_bays(self):
+        form = self._form_for_clean(quantity=3, available_bays=[SimpleNamespace(pk=1)])
+
+        form.clean()
+
+        self.assertIn("quantity", form.errors)
+        self.assertIn("nur ein freier Modulschacht", str(form.errors["quantity"]))
+
+    def test_quantity_and_manual_selection_are_mutually_exclusive(self):
+        module_bay = SimpleNamespace(pk=1, name="A1", device_id=10, enabled=True)
+        form = self._form_for_clean(module_bays=[module_bay], quantity=1, available_bays=[module_bay])
+
+        form.clean()
+
+        self.assertIn("quantity", form.errors)
+
+    def test_requires_quantity_or_manual_selection(self):
+        form = self._form_for_clean()
+
+        form.clean()
+
+        self.assertIn("__all__", form.errors)