Add ImproperlyConfigured exception

Author: WaVEV

django_mongodb_backend/forms/fields/array.py

@@ -2,7 +2,7 @@
 from itertools import chain
 
 from django import forms
-from django.core.exceptions import ValidationError
+from django.core.exceptions import ImproperlyConfigured, ValidationError
 from django.utils.translation import gettext_lazy as _
 
 from ...utils import prefix_validation_error
@@ -20,6 +20,11 @@ def __init__(
         self.base_field = base_field
         self.delimiter = delimiter
         super().__init__(**kwargs)
+        if (min_length is not None or max_length is not None) and size is not None:
+            raise ImproperlyConfigured(
+                "SimpleArrayField param 'size' cannot be "
+                "specified with 'max_length' or 'min_length'."
+            )
         if min_length is not None:
             self.min_length = min_length
             self.validators.append(ArrayMinLengthValidator(int(min_length)))

tests/forms_tests_/test_array.py

@@ -145,6 +145,15 @@ def test_required(self):
             field.clean("")
         self.assertEqual(cm.exception.messages[0], "This field is required.")
 
+    def test_misconfigured(self):
+        msg = "SimpleArrayField param 'size' cannot be specified with 'max_length' or 'min_length'."
+        with self.assertRaises(exceptions.ImproperlyConfigured) as cm:
+            SimpleArrayField(forms.CharField(), max_length=3, size=2)
+        self.assertEqual(cm.exception.args[0], msg)
+        with self.assertRaises(exceptions.ImproperlyConfigured) as cm:
+            SimpleArrayField(forms.CharField(), min_length=3, size=2)
+        self.assertEqual(cm.exception.args[0], msg)
+
     def test_model_field_formfield(self):
         model_field = ArrayField(models.CharField(max_length=27))
         form_field = model_field.formfield()