The phrase "are preparing to test" is correct and usable in written English.
It can be used when indicating that someone is in the process of getting ready to conduct a test or evaluation.
Example: "The researchers are preparing to test the new drug on a group of volunteers."
Alternatives: "are getting ready to test" or "are set to test".
The environmentalists are preparing to test the new law in court.
Since then, investigators have disassembled the device, run hydraulic fluids through parts of it and are preparing to test the pods that control it to determine whether they were functioning properly.
With rumours circulating that Liverpool are preparing to "test Sunderland's resolve" with the offer of a Luton van filled with sapphires for feisty lump-kicker Lee Cattermole, there have been the first signs that the immense value of English footballers could lead to previously unforeseen problems.
After a painstaking journey, researchers are preparing to test stem cell therapy in ailing fetuses.
To get these answers, you need to find a few "friendly projects" working with organisations who are prepared to test your app and perhaps also cover some of the costs on the ground.
Presumably with Amazon in mind, he says this "could not be more different than mass-produced items delivered to you by drone".Big retailers are prepared to test this claim.
Six controllers are prepared to test the robot's dynamic model: hyperbolic sine cosine; computed torque; sliding hyperbolic mode; control with learning; and adaptive.
Tottenham have scouted him extensively and they were preparing to test Villa's strong resolve to keep him.
The company has already developed a range of prototype systems and is preparing to test them with patients.
North Korea has engaged in bellicose talk toward the South, and there were reports on Sunday that the North was preparing to test a long-range missile.
West Virginia's new mine safety chief is preparing to test members of his agency's staff for illegal drug use.
