Only set this configuration option in Rails >= 5.2

Author: Carl Thuringer

test/test_helper.rb

@@ -51,13 +51,15 @@ class TestApp < Rails::Application
 
   ActiveRecord::Schema.verbose = false
   config.active_record.schema_format = :none
-  config.active_record.sqlite3.represent_boolean_as_integer = true
   config.active_support.test_order = :random
 
   if Rails::VERSION::MAJOR >= 5
     config.active_support.halt_callback_chains_on_return_false = false
     config.active_record.time_zone_aware_types = [:time, :datetime]
     config.active_record.belongs_to_required_by_default = false
+    if Rails::VERSION::MINOR >= 2
+      config.active_record.sqlite3.represent_boolean_as_integer = true
+    end
   end
 end