ARIA in HTML - test cases for attribute casing

last updated 27 June 2021

Authors SHOULD use lowercase ASCII letters when specifying the following aria-* attribute values.

Test:

Test 1

aria-atomic=TRUE
aria-busy=TRUE
aria-checked=TRUE
aria-current=TRUE
aria-disabled=TRUE
aria-dropeffect=MOVE
aria-expanded=TRUE
aria-grabbed=FALSE
aria-haspopup=TRUE
aria-hidden=FALSE
aria-live=FALSE
aria-modal=FALSE
aria-multiline=TRUE
aria-multiselectable="FALSE"
aria-orientation=TRUE
aria-pressed=FALSE
aria-relevant=FALSE
aria-selected=TRUE
aria-sort=ASCENDING

Expected result:
Flag error or warning to authors to use lowercase ASCII letters when specifying an attribute's token value.