| // Copyright (c) 2022, 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. |
| |
| // @dart = 2.9 |
| |
| // Tests that static fields are properly reset after hot restarts. |
| |
| import 'dart:_runtime' as dart show hotRestart, resetFields; |
| |
| import 'package:expect/expect.dart'; |
| |
| String noInitializer; |
| int withInitializer = 1; |
| |
| class Statics { |
| static String noInitializer; |
| static int withInitializer = 2; |
| } |
| |
| class StaticsGeneric<T> { |
| static String noInitializer; |
| static int withInitializer = 3; |
| } |
| |
| main() { |
| var resetFieldCount = dart.resetFields.length; |
| |
| // Set static fields without explicit initializers. Avoid calling getters for |
| // these statics to ensure they are reset even if they are never accessed. |
| noInitializer = 'set via setter'; |
| Statics.noInitializer = 'Statics set via setter'; |
| StaticsGeneric.noInitializer = 'StaticsGeneric set via setter'; |
| |
| // Initialized statics should contain their values. |
| Expect.equals(1, withInitializer); |
| Expect.equals(2, Statics.withInitializer); |
| Expect.equals(3, StaticsGeneric.withInitializer); |
| |
| // Six new field resets from 3 setter calls and 3 getter calls. |
| var expectedResets = resetFieldCount + 6; |
| Expect.equals(expectedResets, dart.resetFields.length); |
| |
| dart.hotRestart(); |
| resetFieldCount = dart.resetFields.length; |
| |
| // Uninitialized statics have been reset to their implicit null initial state. |
| Expect.equals(null, noInitializer); |
| Expect.equals(null, Statics.noInitializer); |
| Expect.equals(null, StaticsGeneric.noInitializer); |
| |
| noInitializer = 'set via setter'; |
| Statics.noInitializer = 'Statics set via setter'; |
| StaticsGeneric.noInitializer = 'StaticsGeneric set via setter'; |
| |
| // All statics should contain their set values. |
| Expect.equals('set via setter', noInitializer); |
| Expect.equals('Statics set via setter', Statics.noInitializer); |
| Expect.equals('StaticsGeneric set via setter', StaticsGeneric.noInitializer); |
| Expect.equals(1, withInitializer); |
| Expect.equals(2, Statics.withInitializer); |
| Expect.equals(3, StaticsGeneric.withInitializer); |
| |
| // Six total new field resets despite getter and setter calls on the same |
| // static fields. |
| expectedResets = resetFieldCount + 6; |
| Expect.equals(expectedResets, dart.resetFields.length); |
| |
| dart.hotRestart(); |
| dart.hotRestart(); |
| resetFieldCount = dart.resetFields.length; |
| |
| // All statics should contain their initial values. |
| Expect.equals(null, noInitializer); |
| Expect.equals(null, Statics.noInitializer); |
| Expect.equals(null, StaticsGeneric.noInitializer); |
| Expect.equals(1, withInitializer); |
| Expect.equals(2, Statics.withInitializer); |
| Expect.equals(3, StaticsGeneric.withInitializer); |
| |
| // Six new field resets from 6 getter calls. |
| expectedResets = resetFieldCount + 6; |
| Expect.equals(expectedResets, dart.resetFields.length); |
| } |