Can you have attest in a sentence?

Unfortunately for the plaintiff, three independent witnesses were able to attest that he deliberately jumped in front of the defendant's vehicle.

I can attest to the excellence of this shampoo.

I can attest to the truth of her story because I, too, saw what happened.

I have this sentence in my resume and would like to know if it is written correctly. "These career experiences attest to my being accomplished in the areas that are required to perform in the...

When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).