How to use "testing" in a sentence

His hands moved over her, testing the firmness and resilience of her, and she touched him too, gently squeezing his shoulders, his arms, the hard muscles of his back

We're supposed to be testing the boy to destruction, aren't we? Then why fret about his health?"

At the corner, he ignored the stop sign and swung the car hard to the left, only tapping the brakes once, severely testing the Chevy's suspension.

Like an old athlete back on the playing field after a long absence, testing his reflexes, taking pride in the fact that his old skills are still there."

He couldn't keep anything in his stomach because recently they've been reinfecting him, testing him to destruction, like I said

Across the pit, on its further edge, lay the great flying-machine which they had been testing in our heavier atmosphere when disease and death stopped them