<html>
<import src="../resources/chai.sky" />
<import src="../resources/mocha.sky" />
<script>
describe('MutationObserver observe', function() {
  it('should throw on invalid input', function() {
    var div = document.createElement('div');
    var observer = new MutationObserver(function(mutations) { });
    assert.throw(function() {
      observer.observe();
    });
    assert.throw(function() {
      observer.observe(null);
    });
    assert.throw(function() {
      observer.observe(undefined)
    });
    assert.throw(function() {
      observer.observe(div);
    });
    assert.throw(function() {
      observer.observe(div, null);
    });
    assert.throw(function() {
      observer.observe(div, undefined);
    });
    assert.throw(function() {
      observer.observe(null, {attributes: true});
    });
    assert.throw(function() {
      observer.observe(undefined, {attributes: true});
    });
    assert.throw(function() {
      observer.observe(div, {subtree: true});
    });
    assert.throw(function() {
      observer.observe(div, {attributes: false, attributeOldValue: true});
    });
    assert.throw(function() {
      observer.observe(div, {attributes: false, attributeFilter: ["id"]});
    });
    assert.throw(function() {
      observer.observe(div, {attributes: false, attributeOldValue: false});
    });
    assert.throw(function() {
      observer.observe(div, {characterData: false, characterDataOldValue: true});
    });
    assert.throw(function() {
      observer.observe(div, {characterData: false, characterDataOldValue: false});
    });
  });
});
</script>
</html>