document: Wales face Ukraine in their penultimate warm-up match before Euro 2016, and the last before the manager names his 23-man squad for the tournament.
  Coleman knows the fixture could be a risk, but adds it is one worth taking.
  "When you go to places like this you find out a lot about players. We want it to be risky and edgy," he said.
  "You learn nothing if you go into a game knowing if we are at 80% we will win 4-0."
  Wales, who drew 1-1 with Northern Ireland on Thursday, will again be without Real Madrid forward Gareth Bale and Arsenal midfielder Aaron Ramsey at Kiev's 70,000-capacity Olympic Stadium.
  Ukraine have also qualified for Euro 2016, and Coleman believes taking on such a tough trip will help his relatively inexperienced team.
  "If you go into a hostile environment against a good team, you know you can end up with egg on your face if you do not turn up and perform," he said.
  "But I prefer it like this. We are in their backyard in a tough atmosphere, and we have to show we can cope."
  Coleman, however, has the comfort of being able to call on his first-choice defence and is likely to return to five at the back.
  The fit-again Ben Davies is set to join skipper Ashley Williams and James Chester in the centre of defence, with Chris Gunter and Neil Taylor deployed as wing-backs.
  "The edge in the atmosphere is not for everyone," said Coleman.
  "But guys like Ashley Williams are always the same in mentality - he always plays with that meaning and gives everything he has got."
summary: Wales manager Chris Coleman believes his team will benefit from the hostility they are likely to face in Monday's friendly in Kiev.