src/third_party/web_platform_tests/tools/scripts/manifest.js

// grab test metadata from a test file
function __result_handler() {

    function __get_metadata() {
	var obj = new Object();
	var author = [];
	var assert = [];
	var help = [];
	var match = [];
	var mismatch = [];
	var flags = [];
	var nodes;

	nodes = document.querySelectorAll('link[rel="author"]');
	for (var i = 0; i < nodes.length; i++) {
	    var href = nodes[i].getAttribute("href");
	    var title = nodes[i].getAttribute("title");
	    var s = title;
	    if (href != null) {
		s += " <" + href + ">";
	    }
	    author.push(s);
	}
	if (nodes.length > 0) obj.author = author;
	nodes = document.querySelectorAll('meta[name="assert"]');
	for (var i = 0; i < nodes.length; i++) {
	    assert.push(nodes[i].getAttribute("content"));
	}
	if (nodes.length > 0) obj.assert = assert;
	nodes = document.querySelectorAll('link[rel="help"]');
	for (var i = 0; i < nodes.length; i++) {
	    help.push(nodes[i].getAttribute("href"));
	}
	if (nodes.length > 0) obj.help = help;
	nodes = document.querySelectorAll('link[rel="match"]');
	for (var i = 0; i < nodes.length; i++) {
	    match.push(nodes[i].getAttribute("href"));
	}
	if (nodes.length > 0) obj.match = match;
	nodes = document.querySelectorAll('link[rel="mismatch"]');
	for (var i = 0; i < nodes.length; i++) {
	    mismatch.push(nodes[i].getAttribute("href"));
	}
	if (nodes.length > 0) obj.match = mismatch;
	nodes = document.querySelectorAll('meta[name="flags"]');
	for (var i = 0; i < nodes.length; i++) {
	    flags.push(nodes[i].getAttribute("content"));
	}
	if (nodes.length > 0) obj.flags = flags;

	return obj;
    }

    var meta = __get_metadata();
    var nodes;

    function copy(obj, prop, arr) {
	if (typeof arr !== "undefined") {
	    var a = [];
	    for (var i = 0; i<arr.length;i++) {
		a[i] = arr[i];
	    }	
	    obj[prop] = a;
	}
    }


    var ret = new Object();
    ret.location = document.location.href;
    ret.type  = "manual";    
    ret.tests = new Object();

    var node = document.querySelector('script[src$="/resources/testharness.js"]');
    if (node !== null) {
	ret.type = "script";
    }

    if (ret.type === "script") {
	if (typeof metadata_generator === "undefined"
	    || Object.keys(metadata_generator.currentMetadata).length === 0)
	    return "WRAPPER:TRY_AGAIN";
	else {
	    for (var key in metadata_generator.currentMetadata) {
		var obj = metadata_generator.currentMetadata[key];
		var newtest = new Object();
		ret.tests[key]= newtest;
		if (typeof obj.help === "undefined") {
		    copy(newtest, "help", meta.help);
		} else if (typeof obj.help === "string") {
		    newtest.help = [ obj.help ];	  
		}
		if (typeof obj.author === "undefined") {
		    copy(newtest, "author", meta.author);
		} else if (typeof obj.author === "string") {
		    newtest.author = [ obj.author ];	  
		}
		if (typeof obj.assert === "undefined") {
		    copy(newtest, "assert", meta.assert);
		} else if (typeof obj.assert === "string") {
		    newtest.assert = [ obj.assert ];	  
		}
		copy(newtest, "match", meta.match);
		copy(newtest, "mismatch", meta.mismatch);
		copy(newtest, "flags", meta.flags);
	    }
	    return ret;
	}
    } else {
	var newtest = meta;
	ret.tests[document.title]= newtest;	

	if (typeof newtest.match !== "undefined"
	    || typeof newtest.mismatch !== "undefined") {
	    ret.type = "reftest";
	}

	return ret;
    }

}

function __give_up() {
    var ret = new Object();
    ret.location = document.location.href;
    ret.type  = "manual";    
    ret.tests = new Object();

    var node = document.querySelector('script[src$="/resources/testharness.js"]');
    if (node !== null) {
	ret.type = "script";
    } else if (typeof newtest.match !== "undefined"
	       || typeof newtest.mismatch !== "undefined") {
	ret.type = "reftest";
    }

    var newtest = __get_metadata();
    ret.tests[document.title]= newtest;	
    
    return ret;
}