src/main.js
function promiseShouldSucceed(promise, done, handler) {
    promise.then(result => {
        handler(result)
        done()
    }).
    catch(error => done(error))
}
function promiseShouldSucceed(promise, done, handler) {
    promise.then(result => {
        handler(result)
        done()
    }).
    catch(error => done(error))
}
Test a promise for success