Fixed #15997 -- Added list_max_show_all option to ModelAdmin in replacement for a global module level variable. Thanks, jsdalton.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16725 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/modeladmin/tests.py

@@ -1115,6 +1115,24 @@ class ValidationTests(unittest.TestCase):
 
         validate(ValidationTestModelAdmin, ValidationTestModel)
 
+    def test_max_show_all_allowed_validation(self):
+
+        class ValidationTestModelAdmin(ModelAdmin):
+            list_max_show_all = 'hello'
+
+        self.assertRaisesRegexp(
+            ImproperlyConfigured,
+            "'ValidationTestModelAdmin.list_max_show_all' should be an integer.",
+            validate,
+            ValidationTestModelAdmin,
+            ValidationTestModel,
+        )
+
+        class ValidationTestModelAdmin(ModelAdmin):
+            list_max_show_all = 200
+
+        validate(ValidationTestModelAdmin, ValidationTestModel)
+
     def test_search_fields_validation(self):
 
         class ValidationTestModelAdmin(ModelAdmin):