[spec] Add more TimeVal tests (#4672)
[spec] Add more TimeVal tests (#4672)

That should please CodeCov.
koreader/koreader,koreader/koreader,houqp/koreader,Frenzie/koreader,mwoz123/koreader,mihailim/koreader,NiLuJe/koreader,Markismus/koreader,Hzj-jie/koreader,Frenzie/koreader,poire-z/koreader,poire-z/koreader,NiLuJe/koreader,pazos/koreader