 

PASS single_email doesn't have the multiple attribute 
PASS value should be sanitized: strip line breaks 
PASS Email address validity 
PASS When the multiple attribute is removed, the user agent must run the value sanitization algorithm 
PASS multiple_email has the multiple attribute 
PASS run the value sanitization algorithm after setting a new value 
PASS valid value is a set of valid email addresses separated by a single ','