method verifyAllScopesClosed

Source

static void verifyAllScopesClosed() {
  if (_scopeStack.isNotEmpty) {
    StringBuffer message = new StringBuffer();
    message.writeln('Asynchronous call to guarded function leaked. You must use "await" with all Future-returning test APIs.');
    for (_AsyncScope scope in _scopeStack) {
      final _StackEntry guarder = _findResponsibleMethod(scope.creationStack, 'guard', message);
      if (guarder != null) {
        message.writeln(
          'The guarded method "${guarder.methodName}" '
          '${guarder.className != null ? "from class ${guarder.className} " : ""}'
          'was called from ${guarder.callerFile} '
          'on line ${guarder.callerLine}, '
          'but never completed before its parent scope closed.'
        );
      }
    }
    throw new FlutterError(message.toString().trimRight());
  }
}