flutter_flutter/tests/mutation-observer/mutation-observer-constructor.sky
2014-11-03 12:34:57 -08:00

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<html>
<import src="../resources/chai.sky" />
<import src="../resources/mocha.sky" />
<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>