LayoutTests/fast/css/alt-inherit-initial.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script src="../../resources/js-test-pre.js"></script>
 <style>
 .parent {
   alt: "TestAlt";
 }
 </style>
 </head>
 <body>
 <div id="parentDiv" class="parent">
 <div id="testDiv"></div>
 </div>

 <script>
 description("Tests inherit and initial on 'alt' CSS property.");

 var parentDiv = document.getElementById("parentDiv");
 var testDiv = document.getElementById("testDiv");
 shouldBeEmptyString("parentDiv.style['alt']", "");
 shouldBeEqualToString("window.getComputedStyle(parentDiv).getPropertyValue('alt')", '"TestAlt"');
 shouldBeEmptyString("testDiv.style['alt']");

 // Inherit.
 evalAndLog("testDiv.style['alt'] = 'inherit'");
 shouldBeEqualToString("testDiv.style['alt']", "inherit");
 shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('alt')", '"TestAlt"');

 // Initial.
 evalAndLog("testDiv.style['alt'] = 'initial'");
 shouldBeEqualToString("testDiv.style['alt']", "initial");
 shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('alt')", `""`);

 </script>
 <script src="../../resources/js-test-post.js"></script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="../../resources/js-test-pre.js"></script>
	<style>
	.parent {
	alt: "TestAlt";
	}
	</style>
	</head>
	<body>
	<div id="parentDiv" class="parent">
	<div id="testDiv"></div>
	</div>

	<script>
	description("Tests inherit and initial on 'alt' CSS property.");

	var parentDiv = document.getElementById("parentDiv");
	var testDiv = document.getElementById("testDiv");
	shouldBeEmptyString("parentDiv.style['alt']", "");
	shouldBeEqualToString("window.getComputedStyle(parentDiv).getPropertyValue('alt')", '"TestAlt"');
	shouldBeEmptyString("testDiv.style['alt']");

	// Inherit.
	evalAndLog("testDiv.style['alt'] = 'inherit'");
	shouldBeEqualToString("testDiv.style['alt']", "inherit");
	shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('alt')", '"TestAlt"');

	// Initial.
	evalAndLog("testDiv.style['alt'] = 'initial'");
	shouldBeEqualToString("testDiv.style['alt']", "initial");
	shouldBeEqualToString("window.getComputedStyle(testDiv).getPropertyValue('alt')", `""`);

	</script>
	<script src="../../resources/js-test-post.js"></script>
	</body>
	</html>