Fix `CustomCops/AssertNot` to allow it to have failure message

Follow up of #32605.

1 files changed, 4 insertions, 4 deletions

diff --git a/activerecord/test/cases/invertible_migration_test.rb b/activerecord/test/cases/invertible_migration_test.rb
index 9c85543b9b..363beb4780 100644
--- a/activerecord/test/cases/invertible_migration_test.rb
+++ b/activerecord/test/cases/invertible_migration_test.rb
@@ -341,7 +341,7 @@ module ActiveRecord
     def test_legacy_down
       LegacyMigration.migrate :up
       LegacyMigration.migrate :down
-      assert !ActiveRecord::Base.connection.table_exists?("horses"), "horses should not exist"
+      assert_not ActiveRecord::Base.connection.table_exists?("horses"), "horses should not exist"
     end
 
     def test_up
@@ -352,7 +352,7 @@ module ActiveRecord
     def test_down
       LegacyMigration.up
       LegacyMigration.down
-      assert !ActiveRecord::Base.connection.table_exists?("horses"), "horses should not exist"
+      assert_not ActiveRecord::Base.connection.table_exists?("horses"), "horses should not exist"
     end
 
     def test_migrate_down_with_table_name_prefix
@@ -361,7 +361,7 @@ module ActiveRecord
       migration = InvertibleMigration.new
       migration.migrate(:up)
       assert_nothing_raised { migration.migrate(:down) }
-      assert !ActiveRecord::Base.connection.table_exists?("p_horses_s"), "p_horses_s should not exist"
+      assert_not ActiveRecord::Base.connection.table_exists?("p_horses_s"), "p_horses_s should not exist"
     ensure
       ActiveRecord::Base.table_name_prefix = ActiveRecord::Base.table_name_suffix = ""
     end
@@ -383,7 +383,7 @@ module ActiveRecord
         connection = ActiveRecord::Base.connection
         assert connection.index_exists?(:horses, :content),
                "index on content should exist"
-        assert !connection.index_exists?(:horses, :content, name: "horses_index_named"),
+        assert_not connection.index_exists?(:horses, :content, name: "horses_index_named"),
               "horses_index_named index should not exist"
       end
     end