(#1453) Migrate test to JUnit 5

[baudoliver7]

For #1453. Migrate tests to JUnit 5 for test packages :

• org.cactoos
• org.cactoos.bytes
• org.cactoos.collection
• org.cactoos.experimental

[baudoliver7]

@0crat status

[0crat]

@0crat status (here)

@baudoliver7 This is what I know about this job in C63314D6Z, as in §32:

• The job #1580 is in scope for 5days
• The role is REV
• The job is assigned to @andreoss/z for 5days
• There is no monetary reward attached, it's a free job
• The job doesn't have any impediments
• The budget is 15 minutes/points
• These users are banned and won't be assigned:
  • @baudoliver7/z: This user reported the ticket
• Job footprint (restricted area)

[baudoliver7]

@andreoss ping

[baudoliver7]

@andreoss Please, see my changes.

[victornoel]

@baudoliver7 thx

[victornoel]

@rultor merge

[rultor]

@rultor merge

@victornoel OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@victornoel Done! FYI, the full log is here (took me 8min)

[0crat]

@sereshqua/z please review this job completed by @andreoss/z, as in §30; the job will be fully closed and all payments will be made when the quality review is completed

[0crat]

Code review was too long (14 days), architects (@victornoel) were penalized, see §55

[sereshqua]

@andreoss please make sure you will find at least 3 issues during next CR, thanks

[sereshqua]

@0crat quality acceptable