1 files changed, 6 insertions, 0 deletions
diff --git a/activerecord/test/cases/tasks/database_tasks_test.rb b/activerecord/test/cases/tasks/database_tasks_test.rb
index 659d5eae72..3bfbc92afd 100644
--- a/activerecord/test/cases/tasks/database_tasks_test.rb
+++ b/activerecord/test/cases/tasks/database_tasks_test.rb
@@ -31,6 +31,12 @@ module ActiveRecord
       ActiveRecord::Tasks::DatabaseTasks.register_task(/foo/, klazz)
       ActiveRecord::Tasks::DatabaseTasks.structure_dump({'adapter' => :foo}, "awesome-file.sql")
     end
+
+    def test_unregistered_task
+      assert_raise(ActiveRecord::Tasks::DatabaseNotSupported) do
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump({'adapter' => :bar}, "awesome-file.sql")
+      end
+    end
   end
 
   class DatabaseTasksCreateTest < ActiveRecord::TestCase