Wait for a promise to be fulfilled, then delegate the value to another assertion.
var fulfilledPromise = expect.promise(function (resolve, reject) {
setTimeout(function () {
resolve(123);
});
});
return expect(fulfilledPromise, 'when fulfilled', 'to equal', 123);
It works with any assertion or expect.it
construct:
return expect(fulfilledPromise, 'when fulfilled', expect.it('to be greater than', 100));
If the response is rejected, the assertion fails with the following output:
var rejectedPromise = expect.promise(function (resolve, reject) {
setTimeout(function () {
reject(new Error('argh'));
});
});
return expect(rejectedPromise, 'when fulfilled', 'to equal', 123);
expected Promise (rejected) => Error('argh') when fulfilled to equal 123
Promise (rejected) => Error('argh') unexpectedly rejected with Error('argh')