enhance the serializer tests
enhance the serializer tests

* use generate_tests hook to generate the serialize deserialize combinations
* add dump/load funcargs to simplify the tests

--HG--
branch : trunk

The-Compiler/pytest,Haibo-Wang-ORG/pytest,jb098/pytest,markshao/pytest,ionelmc/pytest,chiller/pytest,vodik/pytest,hunse/pytest,bubenkoff/pytest,pytest-dev/pytest,mhils/pytest,icemac/pytest,The-Compiler/pytest,doordash/pytest,Bjwebb/pytest,tgoodlet/pytest,pelme/pytest,MengJueM/pytest,Bjwebb/pytest,mdboom/pytest,mbirtwell/pytest,etataurov/pytest,icemac/pytest,tareqalayan/pytest,RonnyPfannschmidt/pytest,codewarrior0/pytest,alfredodeza/pytest,eli-b/pytest,userzimmermann/pytest,jb098/pytest,nicoddemus/repo-test,ericdill/pytest,chillbear/pytest,ghostsquad/pytest,hpk42/pytest,JonathonSonesen/pytest,abusalimov/pytest,Bachmann1234/pytest,userzimmermann/pytest,doordash/pytest,rouge8/pytest,mdboom/pytest,mhils/pytest,takluyver/pytest,bukzor/pytest,bubenkoff/pytest,ojake/pytest,codewarrior0/pytest,Haibo-Wang-ORG/pytest,ojake/pytest,nicoddemus/pytest,flub/pytest,ghostsquad/pytest,vmalloc/dessert,Bachmann1234/pytest,omarkohl/pytest,ropez/pytest,ionelmc/pytest,lukas-bednar/pytest,hunse/pytest,txomon/pytest,pytest-dev/py,Akasurde/pytest,hpk42/pytest,takluyver/pytest,ericdill/pytest,gabrielcnr/pytest,pfctdayelise/pytest,omarkohl/pytest,hackebrot/pytest,MichaelAquilina/pytest,nicoddemus/pytest,rmfitzpatrick/pytest,ddboline/pytest,wfxiang08/pytest,davidszotten/pytest,wfxiang08/pytest,Carreau/pytest,tomviner/pytest,chillbear/pytest,lukas-bednar/pytest,oleg-alexandrov/pytest,pelme/pytest,abusalimov/pytest,skylarjhdownes/pytest,untitaker/pytest,oleg-alexandrov/pytest,inirudebwoy/pytest,gabrielcnr/pytest,Magicjarvis/py,ropez/pytest,inirudebwoy/pytest,JonathonSonesen/pytest,rouge8/pytest,malinoff/pytest,tomviner/pytest,MengJueM/pytest,nicoddemus/repo-test,vodik/pytest,Carreau/pytest,mbirtwell/pytest,chiller/pytest,untitaker/pytest,bukzor/pytest,jaraco/pytest