1 files changed, 22 insertions, 0 deletions
diff --git a/tests/postgres_tests/test_indexes.py b/tests/postgres_tests/test_indexes.py
index 96ff829807..f4ac359a3a 100644
--- a/tests/postgres_tests/test_indexes.py
+++ b/tests/postgres_tests/test_indexes.py
@@ -1,7 +1,10 @@
+from unittest import mock
+
 from django.contrib.postgres.indexes import (
     BrinIndex, BTreeIndex, GinIndex, GistIndex, HashIndex, SpGistIndex,
 )
 from django.db import connection
+from django.db.utils import NotSupportedError
 from django.test import skipUnlessDBFeature
 
 from . import PostgreSQLTestCase
@@ -208,6 +211,25 @@ class SchemaTests(PostgreSQLTestCase):
             editor.remove_index(CharFieldModel, index)
         self.assertNotIn(index_name, self.get_constraints(CharFieldModel._meta.db_table))
 
+    def test_brin_index_not_supported(self):
+        index_name = 'brin_index_exception'
+        index = BrinIndex(fields=['field'], name=index_name)
+        with self.assertRaisesMessage(NotSupportedError, 'BRIN indexes require PostgreSQL 9.5+.'):
+            with mock.patch('django.db.connection.features.has_brin_index_support', False):
+                with connection.schema_editor() as editor:
+                    editor.add_index(CharFieldModel, index)
+        self.assertNotIn(index_name, self.get_constraints(CharFieldModel._meta.db_table))
+
+    @skipUnlessDBFeature('has_brin_index_support')
+    def test_brin_autosummarize_not_supported(self):
+        index_name = 'brin_options_exception'
+        index = BrinIndex(fields=['field'], name=index_name, autosummarize=True)
+        with self.assertRaisesMessage(NotSupportedError, 'BRIN option autosummarize requires PostgreSQL 10+.'):
+            with mock.patch('django.db.connection.features.has_brin_autosummarize', False):
+                with connection.schema_editor() as editor:
+                    editor.add_index(CharFieldModel, index)
+        self.assertNotIn(index_name, self.get_constraints(CharFieldModel._meta.db_table))
+
     def test_btree_index(self):
         # Ensure the table is there and doesn't have an index.
         self.assertNotIn('field', self.get_constraints(CharFieldModel._meta.db_table))