added class test
added class test


Former-commit-id: 4ffb2aee7f2679837e1d8e927d5e28b57b57bc0f [formerly df09eee0be34fbc374e20088f28a312df9fee0b7] [formerly 88cbab47dc87a046d8de1c384526a19ef528e6ad]
Former-commit-id: b1d04f205eb887f2a423e7a8ad79f7df07a11b30
Former-commit-id: 36e2884bab7212041c545f20dcd8efed21237c79
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy