added wav test case to testing script
added wav test case to testing script

Signed-off-by: Arvind Chembarpu <2dd2b8beb42a3b9b22bb2cb02fd49ba1b9d5fdf2@gmail.com>

Nift/textract,scalp42/textract,Nift/textract,deanmalmgren/textract,jpadilla/textract,scalp42/textract,deanmalmgren/textract,deanmalmgren/textract,jpadilla/textract,scalp42/textract,lucadealfaro/textract,lucadealfaro/textract,Nift/textract,jpadilla/textract,lucadealfaro/textract