add a test for symbol#succ
add a test for symbol#succ

kachick/topaz,topazproject/topaz,babelsberg/babelsberg-r,babelsberg/babelsberg-r,topazproject/topaz,kachick/topaz,kachick/topaz,topazproject/topaz,babelsberg/babelsberg-r,babelsberg/babelsberg-r,topazproject/topaz,babelsberg/babelsberg-r