<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../resources/js-test-pre.js"></script>
</head>
<body>
<p id="description"></p>
<div id="console"></div>
<script>
description("Test the parsing of the image-set function.");

function jsWrapperClass(node)
{
    if (!node)
        return "[null]";
    var string = Object.prototype.toString.apply(node);
    return string.substr(8, string.length - 9);
}

function shouldBeType(expression, className)
{
    shouldBe("jsWrapperClass(" + expression + ")", "'" + className + "'");
    shouldBe("jsWrapperClass(" + expression + ".__proto__)", "'" + className + "'");
    shouldBe("jsWrapperClass(" + expression + ".constructor)", "'Function'");
}

// These have to be global for the test helpers to see them.
var imageSetRule, subRule;

function testImageSetRule(description, property, rule, expectedLength, expectedTexts)
{
    debug("");
    debug(description + " : " + rule);

    var div = document.createElement("div");
    div.setAttribute("style", property + ": image-set(" + rule + ")");
    document.body.appendChild(div);

    imageSetRule = div.style.getPropertyCSSValue(property);
    shouldBeType("imageSetRule", "CSSValueList");

    if (imageSetRule) {
        if (jsWrapperClass(imageSetRule[0]) == "CSSValueList") {
            // The content property returns a CSSValueList anyway, so to get to the 
            // imageSet CSS value list, we have to look at the first entry in the 
            // content value list.
            imageSetRule = imageSetRule[0];
        }
    }

    shouldBe("imageSetRule.length", function() { return expectedLength; });

    if (imageSetRule) {
        for (var i = 0; i < expectedLength; i++) {
            string = imageSetRule[i];
            if (i % 2 == 0 && string.cssText.includes('#')) {
                subRule = string.cssText.split('#')[1].replace('"', "");
                subRule = subRule.split(')')[0];
                shouldBe("subRule", "'" + expectedTexts[i] + "'");
            } else {
                subRule = string;
                shouldBe("subRule.cssText", "'" + expectedTexts[i] + "'");
            }
        }
    }

    document.body.removeChild(div);
}

testImageSetRule("Single value for background-image with gradient",
                "background-image", 
                "linear-gradient(green, white) 1x", 2,
                ["linear-gradient(green, white)", "1x"]);
testImageSetRule("Single value for content with gradient",
                "background-image",
                "linear-gradient(green, white) 1x", 2,
                ["linear-gradient(green, white)", "1x"]);

testImageSetRule("Single value for background-image with gradients",
                "background-image",
                "linear-gradient(green, white) 1x, radial-gradient(blue, white) 2x", 4,
                ["linear-gradient(green, white)", "1x", "radial-gradient(blue, white)", "2x"]);

testImageSetRule("Combined gradient and URL",
                "background-image",
                "url('#a') 1x, linear-gradient(green, white) 2x", 4,
                ["a", "1x", "linear-gradient(green, white)", "2x"]);

testImageSetRule("Combined gradient and URL in content",
                "content",
                "url('#a') 1x, linear-gradient(green, white) 2x", 4,
                ["a", "1x", "linear-gradient(green, white)", "2x"]);

testImageSetRule("Combined gradient and cross-fade",
                "background-image",
                "-webkit-cross-fade(url('#a'), url('#b'), 70%) 1x, linear-gradient(green, white) 2x", 4,
                ["a", "1x", "linear-gradient(green, white)", "2x"]);

testImageSetRule("Single value for background-image with gradient and dpi",
                "background-image",
                "linear-gradient(green, white) 192dpi", 2,
                ["linear-gradient(green, white)", "192dpi"]);


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