<html>
<link rel="import" href="../resources/chai.html" />
<link rel="import" href="../resources/mocha.html" />
<script>
describe('MutationObserver', function() {
    var observer = new MutationObserver(function(mutations) { });

    it('should have methods', function() {
        assert.equal(typeof observer.observe, 'function');
        assert.equal(typeof observer.disconnect, 'function');
    });
    it('should throw with incorrect constructor args', function() {
        assert.throw(function() {
            new MutationObserver({ handleEvent: function() {} });
        }, TypeError);
        assert.throw(function() {
            new MutationObserver({});
        }, TypeError);
        assert.throw(function() {
            new MutationObserver(42);
        }, TypeError);
        assert.throw(function() {
            new MutationObserver("foo");
        }, TypeError);
    });
});
</script>
</html>