practical test

At all events, a practical test can alone provide the proof in such a case.

At any rate, he took but a brief while to turn it over in his mind, when he set to work to put it to a practical test.

But a practical test convinced me that it could never persuade a majority of the people.

This method furnished a practical test of the popularity of the undertaking.

This matter settled in his mind, Grôm burned to put his wonderful new weapon to practical test.