A shallowEqual() assertion for QUnit, which is essentially a strict comparison of all top-level properties for each object (ignoring the prototype chain).

qunit-shallowequal.js

// Determines if two objects are equal (ignoring prototypes)
QUnit.shallowEquiv = function(actual, expected) {
	var key, equiv = true;
	// Compare first object to second object
	for (key in actual) {
		// Keys must not be in prototype chain
		if (actual.hasOwnProperty(key)) {
			if (actual[key] !== expected[key]) {
				equiv = false;
				break;
			}
		}
	}
	// If objects are still potentially equivalent
	if (equiv) {
		// Compare second object to first object
		// This handles the case where the first object is a subset of the other
		for (key in expected) {
			if (expected.hasOwnProperty(key)) {
				if (expected[key] !== actual[key]) {
					equiv = false;
					break;
				}
			}
		}
	}
	return equiv;
};

// Define shallowEqual() and notShallowEqual() assertions
QUnit.extend(QUnit.assert, {
	shallowEqual: function(actual, expected, message) {
		var equiv = QUnit.shallowEquiv(actual, expected);
		QUnit.push(equiv, actual, expected, message);
	},
	notShallowEqual: function(actual, expected, message) {
		var equiv = QUnit.shallowEquiv(actual, expected);
		QUnit.push(!equiv, actual, expected, message);		
	}
});