// Copyright (c) 2021, 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 The requirement that the condition in a boolean conditional
/// control expression (e.g. the a conditional statement, conditional element,
/// while loop, etc) be assignable to bool is unchanged from pre null-safe Dart.
/// The change in assignability means that the static type of the condition may
/// only be dynamic, Never, or bool
///
/// @description Checks that the static type of the condition (in assignability)
/// may be dynamic, Never, or bool
///
/// @author sgrekhov@unipro.ru

// Requirements=nnbd-strong
import "../../Utils/expect.dart";

Never foo() {
  throw "Never";
}

dynamic bar(x) => x;

main() {
  bool b = true;
  bool x = false;
  x = b;
  x = bar(true);
  Expect.throws(() {
    x = bar("Lily was here");
  });
  Expect.throws(() {
    x = foo();
  });
}