As with Palestine, Ukraine has become a testing ground for Western technology.

Source: https://therealnews.com/peace-in-ukraine-is-too-important-to-leave-in-the-hands-of-arms-dealers

“However, we urge you to not make the sign of unity that is the liturgy into a testing ground for personal projects.

Source: https://www.ncregister.com/cna/swiss-bishops-call-for-respect-for-rules-after-woman-appears-to-concelebrate-mass

Rabbitt said: ''The leaders didn't get away from him like they did on less testing ground at Carlisle last time and he seemed to enjoy passing horses in the closing stages.'

Source: https://www.hexham-courant.co.uk/sport/23935261.results-hexham-races-friday-november-10/?ref=rss

The amendment is the only abortion question on any state’s ballot this year, a spotlight that has generated intense attention from national groups and made Ohio a testing ground for fresh campaign messaging — some of it misleading.

Source: https://www.mymotherlode.com/news/national/general-election/3256785/ohio-amendment-serves-as-testing-ground-for-statewide-abortion-fights-expected-in-2024.html

The insecurity in Ber, which caused peacekeepers to leave earlier than planned, has become an early testing ground for post-MINUSMA Mali.

Source: https://www.startribune.com/gunmen-kill-at-least-23-in-an-attack-on-a-village-in-central-mali/600298445/