Test calling getPropertyValue on computed styles for -webkit-border-image property.
-webkit-border-image: none;
-webkit-border-image
getPropertyValue: none
-webkit-border-image: linear-gradient(white, black) 25 25 25 25 stretch stretch;
-webkit-border-image
getPropertyValue: linear-gradient(rgb(255, 255, 255), rgb(0, 0, 0)) 25 fill / 1 / 0 stretch
-webkit-border-image: linear-gradient(white, black) 50 repeat;
-webkit-border-image
getPropertyValue: linear-gradient(rgb(255, 255, 255), rgb(0, 0, 0)) 50 fill / 1 / 0 repeat
-webkit-border-image: linear-gradient(white, black) 25 25 25 25 / 20 20 20 20 repeat;
-webkit-border-image
getPropertyValue: linear-gradient(rgb(255, 255, 255), rgb(0, 0, 0)) 25 fill / 20 / 0 repeat
-webkit-border-image: linear-gradient(white, black) 50 / 20 stretch stretch;
-webkit-border-image
getPropertyValue: linear-gradient(rgb(255, 255, 255), rgb(0, 0, 0)) 50 fill / 20 / 0 stretch