La promesse de node.js ne fonctionne pas

Question

Answer 1

test de fonction(){

var myFirstPromise = new Promise(function(resolve, reject){
     console.log('in promise')
    resolve("成功!"); //代码正常执行！
});
return myFirstPromise

}

test().then(function(successMessage){

console.log("Yay! " + successMessage);

});