1 files changed, 17 insertions, 1 deletions
diff --git a/activerecord/test/cases/fixtures_test.rb b/activerecord/test/cases/fixtures_test.rb
index c65523d8c1..82ca15b415 100644
--- a/activerecord/test/cases/fixtures_test.rb
+++ b/activerecord/test/cases/fixtures_test.rb
@@ -974,7 +974,7 @@ class TransactionalFixturesOnConnectionNotification < ActiveRecord::TestCase
           connection_id: connection.object_id
         }
 
-        message_bus.instrument("!connection.active_record", payload) {}
+        message_bus.instrument("!connection.active_record", payload) { }
       end
     end
 end
@@ -1344,3 +1344,19 @@ class SameNameDifferentDatabaseFixturesTest < ActiveRecord::TestCase
     assert_kind_of OtherDog, other_dogs(:lassie)
   end
 end
+
+class NilFixturePathTest < ActiveRecord::TestCase
+  test "raises an error when all fixtures loaded" do
+    error = assert_raises(StandardError) do
+      TestCase = Class.new(ActiveRecord::TestCase)
+      TestCase.class_eval do
+        self.fixture_path = nil
+        fixtures :all
+      end
+    end
+    assert_equal <<~MSG.squish, error.message
+      No fixture path found.
+      Please set `NilFixturePathTest::TestCase.fixture_path`.
+    MSG
+  end
+end