Classes

ActiveRecord
ActiveRecord::Base
ActiveRecord::ConnectionAdapters
ActiveRecord::ConnectionAdapters::NullDBAdapter
ActiveRecord::ConnectionAdapters::NullDBAdapter::Checkpoint
ActiveRecord::ConnectionAdapters::NullDBAdapter::Statement
NullDB
NullDB::RSpec
NullDB::RSpec::NullifiedDatabase
NullDB::RSpec::NullifiedDatabase::HaveExecuted