call super from setup

activerecord/test/active_record/test_case.rb

@@ -53,5 +53,9 @@ def assert_no_queries(&block)
     ensure
       ActiveRecord::SQLCounter.ignored_sql = prev_ignored_sql
     end
+
+    def sqlite3? connection
+      connection.class.name.split('::').last == "SQLite3Adapter"
+    end
   end
 end

activerecord/test/cases/schema_dumper_test.rb

@@ -3,6 +3,7 @@
 
 class SchemaDumperTest < ActiveRecord::TestCase
   def setup
+    super
     @stream = StringIO.new
   end