Workshop chamber voice lines

[NeonSkyline]

When I play community test chambers on portal 2, at the start there is a Cave Johnson voice line. I like the humor there because it's very funny and makes solving workshop levels fun. So I want to thank VALVe for making those. Has anyone played until you ran out of voice lines? How many are there? Also some test chambers don't have any voice lines. Why do some have voice lines but some don't?

[TheFamousPoundy]

dont know about other questions but here's all the voice lines he can say
https://www.youtube.com/watch?v=IPG3eDTy-yo

[NeonSkyline]

Thanks, I'll check the vid out(That's a lot!)