LanguageFeatures/nnbd/static_errors_A05_t29.dart

/*
 * Copyright (c) 2020, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/**
 * @assertion It is an error if a class declaration declares an instance
 * variable with a potentially non-nullable type and no initializer expression,
 * and the class has a generative constructor where the variable is not
 * initialized via an initializing formal or an initializer list entry, unless
 * the variable is marked with the late modifier.
 *
 * @description Check that it is not an error if a class declaration declares an
 * instance variable with a potentially non-nullable type and no initializer
 * expression, and the class has a generative constructor where the variable is
 * not initialized via an initializing formal or an initializer list entry, but
 * the variable is marked with the 'late' modifier. Test FutureOr<F> where F is
 * a function type
 * @author sgrekhov@unipro.ru
 */
// Requirements=nnbd-strong
import "dart:async";
typedef void Foo();

class C {
  late FutureOr<Function> x1;
  late final FutureOr<Function> x2;
  covariant late FutureOr<Function> x3;

  late FutureOr<Foo> x4;
  late final FutureOr<Foo> x5;
  covariant late FutureOr<Foo> x6;

  C() {}
}

main() {
  new C();
}