Use assert instead of System.out

[SunJiFengPlus]

Please assign it to me, I'd love to do it

[KomachiSion]

Thanks for your contribution.
But I see your provided picture, all most of them are just want to show test detail rather than assert case.

So I think there is no need to change them to assert.

[SunJiFengPlus]

not as much as in the picture, just a few points.

[KomachiSion]

Yes, we need to discuss whether these case is need be assert or just a print dependency

[SunJiFengPlus]

I think there are three System.out need to replace it with assert, and if confirmed, I'll start.

[KomachiSion]

go ahead please, these case should add assert to ensure.