diff --git a/test/cases/helper_cockroachdb.rb b/test/cases/helper_cockroachdb.rb
index 4bc51873..523658b8 100644
--- a/test/cases/helper_cockroachdb.rb
+++ b/test/cases/helper_cockroachdb.rb
@@ -17,12 +17,23 @@
 # and COCKROACH_SKIP_LOAD_SCHEMA that can
 # skip this step
 require "support/load_schema_helper"
+class NoPGSchemaTestCase < SimpleDelegator
+  def current_adapter?(...)
+    puts ?» * 80
+    false
+  end
+end
+
 module LoadSchemaHelperExt
   def load_schema
+    old_helper = ActiveRecord::TestCase
+    ActiveRecord.const_set(:TestCase, NoPGSchemaTestCase.new(ActiveRecord::TestCase))
     return if ENV['COCKROACH_LOAD_FROM_TEMPLATE']
     return if ENV['COCKROACH_SKIP_LOAD_SCHEMA']
 
     super
+  ensure
+    ActiveRecord.const_set(:TestCase, old_helper)
   end
 end
 LoadSchemaHelper.prepend(LoadSchemaHelperExt)