aria-placeholder test suite

input[type=text], aria-placeholder defined, labelled

aria-placeholder="MM-DD-YYYY"

input[type=text], aria-placeholder defined, unlabelled

aria-placeholder="Your birthday"

input[type=text], html placeholder and aria-placeholder defined

aria-placeholder="10 characters", placeholder="MM-DD-YYYY"

input[type=text], aria-placeholder defined, populated

aria-placeholder="MM-DD-YYYY"