Failed assertion when doing clientViaUserConsent

[floitsch]

When doing a clientViaUserConsent I get the following assertion error:

When running without assertions, the code seems to work.

Unhandled exception:
'package:googleapis_auth/src/auth_http_utils.dart': Failed assertion: line 81 pos 12: 'credentials.refreshToken != null': is not true.
#0      _AssertionError._doThrowNew (dart:core-patch/dart:core/errors_patch.dart:37)
#1      _AssertionError._throwNew (dart:core-patch/dart:core/errors_patch.dart:33)
#2      new AutoRefreshingClient (package:googleapis_auth/src/auth_http_utils.dart:81:12)
#3      clientViaUserConsent.<anonymous closure> (package:googleapis_auth/auth_io.dart:53:32)
#4      _RootZone.runUnary (dart:async/zone.dart:1381)
#5      _FutureListener.handleValue (dart:async/future_impl.dart:129)
#6      _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:633)
#7      _Future._propagateToListeners (dart:async/future_impl.dart:662)
#8      _Future._complete (dart:async/future_impl.dart:467)
#9      _SyncCompleter.complete (dart:async/future_impl.dart:51)
#10     _completeOnAsyncReturn (dart:async-patch/dart:async/async_patch.dart:255)
#11     AuthorizationCodeGrantServerFlow.run (package:googleapis_auth/src/oauth2_flows/auth_code.dart:223:9)
#12     _RootZone.runUnary (dart:async/zone.dart:1381)
#13     _FutureListener.handleValue (dart:async/future_impl.dart:129)
#14     _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:633)
#15     _Future._propagateToListeners (dart:async/future_impl.dart:662)
#16     _Future._addListener.<anonymous closure> (dart:async/future_impl.dart:342)
#17     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#18     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#19     _Timer._runTimers (dart:isolate-patch/dart:isolate/timer_impl.dart:376)
#20     _Timer._handleMessage (dart:isolate-patch/dart:isolate/timer_impl.dart:401)
#21     _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:163)

main() {
  clientViaUserConsent(new ClientId(_CLIENT_ID, _CLIENT_SECRET), _SCOPES, (String str) {
    print("asking for consent: $str");
  }).then((client) {
  });

[mkustermann]

This issue should probably moved to package:googleapis_auth.

The assertion is correct in the sense that the oauth2 access token you got back will most likely only be valid for 1h and expire afterwards. Getting a refresh token from the server allows the returned AutoRefreshingAuthClient to refresh the access token before it expires. That's why the assertion is in.

The real question is why the server hasn't returned the refresh token in the first place.

[floitschG]

This issue was moved to dart-archive/googleapis_auth#26