mchalapuk/fake-promise

:pray: Total control over when ES6 promises are resolved. Intended for use in unit tests.

fake-promise's Issues

Does not support multiple then() calls

Multiple then() calls on the same promise (not chained) fail with an error:

const promise = new FakePromise<void>()
promise.then(() => console.log('first then'))
promise.then(() => console.log('second then'))
promise.resolve()

    FakePromiseError: promise already specified
        CURRENT STATE:
          FakePromise#4 {
            specified: true,
          }
        STATE AFTER SPECIFICATION:
          FakePromise#4 {
            specified: true,
          }
        STACKTRACE OF SPECIFICATION:
        ...

Real promises support multiple then() calls and it would be helpful if FakePromise would support it too in case the tested code uses this behavior.