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Test Info:

<!DOCTYPE html>
<html lang=en>
<title>Test for Bug 160403</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
span {
border-inline-start: 0px solid rgb(0, 0, 0);
border-inline-end: 0px solid rgb(0, 0, 0);
transition: border 100s linear -50s;
span.transitioned {
border-inline-start: 100px solid rgb(100, 100, 100);
border-inline-end: 10px solid rgb(10, 10, 10);
// Test that transitioning each of border-{left,right}-{color,width}
// works when the values are set through the -moz-border-{start,end}
// shorthands.
var e = document.querySelector("span");
var cs = getComputedStyle(e);
is(cs.borderLeftColor, "rgb(0, 0, 0)", "value of border-left-color before transition");
is(cs.borderLeftWidth, "0px", "value of border-left-width before transition");
is(cs.borderRightColor, "rgb(0, 0, 0)", "value of border-right-color before transition");
is(cs.borderRightWidth, "0px", "value of border-right-width before transition");
e.className = "transitioned";
is(cs.borderLeftWidth, "50px", "value of border-left-width during transition");
is(cs.borderLeftColor, "rgb(50, 50, 50)", "value of border-left-color during transition");
is(cs.borderRightWidth, "5px", "value of border-right-width during transition");
is(cs.borderRightColor, "rgb(5, 5, 5)", "value of border-right-color during transition");