"test the flexibility" is correct and usable in written English.
You can use it in any context where you are referring to assessing or evaluating the ability of something to bend or be adapted. For example, "I need to test the flexibility of the new software before I make a purchase decision."
Glenn Derene: as luck would have it, Consumer Reports has exactly the right equipment to test this sort of thing, and we've used it to test the flexibility of phones before.
This allowed Lua to test the flexibility of the service.
To test the flexibility of the Ag NW film conductor, bending tests were performed, and the representative result is illustrated in Figure 7.
For characterising the device under test, the flexibility to be able to select different waveforms is helpful to detect the low-power transmitted signal.
Here, we explore the functionality of therapeutic cassettes delivered by these means and test the flexibility of this approach to clinically relevant alleles.
We chose to test both orientations of the tag to assess its influence on the protein folding, and to test the flexibility of the developed template synthesis protocol.
The experiences to date suggest that there remains general reluctance among LMICs to fully test the flexibilities for compulsory licensing available under TRIPS.
It tests the "flexibility" of the UK's constitution.
For its part, Tendril is testing the flexibility of its platform, which was designed to interface with a relatively rigid energy grid.
Experts here say that Ayatollah Khamenei, who was appointed supreme leader in 1989, is interested in testing the flexibility of the United States in negotiations over Iran's nuclear program, which it says is for peaceful uses but the West says is a cover for developing nuclear weapons.
Lastly, we tested the flexibility of a real solar cell device made with our Ag-NW TCE (20 nm TiO2).
