michael@0: // Just receive 'foo' message and forward it back
michael@0: // as 'bar' message
michael@0: addMessageListener("foo", function (message) {
michael@0:   sendAsyncMessage("bar", message);
michael@0: });
michael@0: 
michael@0: addMessageListener("valid-assert", function (message) {
michael@0:   assert.ok(true, "valid assertion");
michael@0:   assert.equal(1, 1, "another valid assertion");
michael@0:   sendAsyncMessage("valid-assert-done");
michael@0: });