Which is a better mode of testing writing, subjective or objective?

For me subjective , subject is a big field ,in it what you think you can write , ..

Testing writing is an ambiguous expression especially since writing is an art and art has no boundaries. Testing, therefore, will rely on both, or in other words, an amalgam of subjective and objective views.

subjective since it involves more participation.

I think that objectives should be used to test reading and comprehension, whereas subjective mode should be used to test writing.