Assert Microdata test util for Casper JS. Requires https://gist.github.com/philmander/10012466

casper.test.assertMicrodata.js

/**
 * Asserts a microdata item value matches the given expected value in the remote DOM environment
 * Depends on the casper.fetchMicrodata method
 *
 * @param itemType {String} The item type of the item scopes to look for properties in
 * @param property {String} The name of the property the compare the expected value against
 * @param expectedItemValue {String} The expected value of the item property
 * @param message {String} The assertion message
 * @param itemTypeIndex {Number} A specific index of an item scope to use. If omitted or null, will look for matches in
 *                                  all item scopes
 * @param itemValueIndex {Number} A specific property index to match againist. If omitted or null, will look for all
 *                                  values in the property array
 */
casper.test.assertMicrodata = function(itemType, property, expectedItemValue, message, itemTypeIndex, itemValueIndex) {
	"use strict";

	var foundMatch = false;
	var microdata = casper.fetchMicrodata(itemType);
	if(typeof itemTypeIndex === "number" && microdata.items[itemTypeIndex]) {
		microdata.items = [ microdata.items[itemTypeIndex] ];
	}

	microdata.items.forEach(function(item) {
		var props = item.properties[property];
		if(props) {
			if(typeof itemTypeIndex === "number" && props[itemValueIndex]) {
				props = [ props[itemValueIndex] ];
			}
			for(var i = 0; i < props.length && !foundMatch; i++) {
				foundMatch = utils.equals(props[i], expectedItemValue);
			}
		}
	});

	return this.assert(foundMatch, message, {
		type: "assertMicrodata",
		standard: "Matching microdata itemValue found for " + itemType + ":" + property,
		values: {
			subject: property,
			expected: expectedItemValue
		}
	});
};