[test] Porting more VM hot reload tests.

Change-Id: I196cbd9bee6996c313285cce89f928e22b4804cf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/398929
Reviewed-by: Nate Biggs <[email protected]>
Commit-Queue: Mark Zhou <[email protected]>

Author: Markzipan

tests/hot_reload/class_added/main.0.dart

@@ -0,0 +1,20 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L561
+
+helper() {
+  return 'hello';
+}
+
+Future<void> main() async {
+  Expect.equals('hello', helper());
+  await hotReload();
+
+  Expect.equals('hello from A', helper());
+}

tests/hot_reload/class_added/main.1.dart

@@ -0,0 +1,40 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L561
+
+helper() {
+  return A().toString();
+}
+
+class A {
+  toString() => 'hello from A';
+}
+
+Future<void> main() async {
+  Expect.equals('hello', helper());
+  await hotReload();
+
+  Expect.equals('hello from A', helper());
+}
+/** DIFF **/
+/*
+@@ -9,7 +9,11 @@
+ // https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L561
+ 
+ helper() {
+-  return 'hello';
++  return A().toString();
++}
++
++class A {
++  toString() => 'hello from A';
+ }
+ 
+ Future<void> main() async {
+*/

tests/hot_reload/class_removed/main.0.dart

@@ -0,0 +1,25 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L585
+
+class A {
+  toString() => 'hello from A';
+}
+var list = <dynamic>[];
+helper() {
+  list.add(A());
+  return list[0].toString();
+}
+
+Future<void> main() async {
+  Expect.equals('hello from A', helper());
+  await hotReload();
+
+  Expect.equals('hello from A', helper());
+}

tests/hot_reload/class_removed/main.1.dart

@@ -0,0 +1,37 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L585
+
+var list = <dynamic>[];
+helper() {
+  return list[0].toString();
+}
+
+Future<void> main() async {
+  Expect.equals('hello from A', helper());
+  await hotReload();
+
+  Expect.equals('hello from A', helper());
+}
+/** DIFF **/
+/*
+@@ -8,12 +8,8 @@
+ // Adapted from:
+ // https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L585
+ 
+-class A {
+-  toString() => 'hello from A';
+-}
+ var list = <dynamic>[];
+ helper() {
+-  list.add(A());
+   return list[0].toString();
+ }
+ 
+*/

tests/hot_reload/constructor_changed/main.0.dart

@@ -0,0 +1,30 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L723
+
+class A {
+  late int field;
+  A() {
+    field = 20;
+  }
+}
+
+var savedA = A();
+helper() {
+  return A();
+}
+
+Future<void> main() async {
+  Expect.equals(20, savedA.field);
+  Expect.equals(20, helper().field);
+  await hotReload();
+
+  Expect.equals(20, savedA.field);
+  Expect.equals(10, helper().field);
+}

tests/hot_reload/constructor_changed/main.1.dart

@@ -0,0 +1,42 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L723
+
+class A {
+  late int field;
+  A() {
+    field = 10;
+  }
+}
+
+var savedA = A();
+helper() {
+  return A();
+}
+
+Future<void> main() async {
+  Expect.equals(20, savedA.field);
+  Expect.equals(20, helper().field);
+  await hotReload();
+
+  Expect.equals(20, savedA.field);
+  Expect.equals(10, helper().field);
+}
+/** DIFF **/
+/*
+@@ -11,7 +11,7 @@
+ class A {
+   late int field;
+   A() {
+-    field = 20;
++    field = 10;
+   }
+ }
+ 
+*/

tests/hot_reload/generic_constructor_tear_off/main.0.dart

@@ -0,0 +1,36 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L4638
+// Regression test for https://github.com/dart-lang/sdk/issues/50148
+
+typedef Create<T, R> = T Function(R ref);
+
+class Base<Input> {
+  Base(void Function(Create<void, Input> create) factory) : _factory = factory;
+
+  final void Function(Create<void, Input> create) _factory;
+
+  void fn() => _factory((ref) {});
+}
+
+class Check<T> {
+  Check(Create<Object?, List<T>> create);
+}
+
+final f = Base<List<int>>(Check<int>.new);
+
+helper() {
+  f.fn();
+}
+
+Future<void> main() async {
+  helper();
+  await hotReload();
+  helper();
+}

tests/hot_reload/generic_constructor_tear_off/main.1.dart

@@ -0,0 +1,39 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L4638
+// Regression test for https://github.com/dart-lang/sdk/issues/50148
+
+typedef Create<T, R> = T Function(R ref);
+
+class Base<Input> {
+  Base(void Function(Create<void, Input> create) factory) : _factory = factory;
+
+  final void Function(Create<void, Input> create) _factory;
+
+  void fn() => _factory((ref) {});
+}
+
+class Check<T> {
+  Check(Create<Object?, List<T>> create);
+}
+
+final f = Base<List<int>>(Check<int>.new);
+
+helper() {
+  f.fn();
+}
+
+Future<void> main() async {
+  helper();
+  await hotReload();
+  helper();
+}
+/** DIFF **/
+/*
+*/

tests/hot_reload/implicit_constructor_changed/main.0.dart

@@ -0,0 +1,27 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L690
+
+class A {
+  int field = 20;
+}
+
+var savedA = A();
+helper() {
+  return A();
+}
+
+Future<void> main() async {
+  Expect.equals(20, savedA.field);
+  Expect.equals(20, helper().field);
+  await hotReload();
+
+  Expect.equals(20, savedA.field);
+  Expect.equals(10, helper().field);
+}

tests/hot_reload/implicit_constructor_changed/main.1.dart

@@ -0,0 +1,39 @@
+// Copyright (c) 2024, 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.
+
+import 'package:expect/expect.dart';
+import 'package:reload_test/reload_test_utils.dart';
+
+// Adapted from:
+// https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L690
+
+class A {
+  int field = 10;
+}
+
+var savedA = A();
+helper() {
+  return A();
+}
+
+Future<void> main() async {
+  Expect.equals(20, savedA.field);
+  Expect.equals(20, helper().field);
+  await hotReload();
+
+  Expect.equals(20, savedA.field);
+  Expect.equals(10, helper().field);
+}
+/** DIFF **/
+/*
+@@ -9,7 +9,7 @@
+ // https://github.com/dart-lang/sdk/blob/f34a2ed99fc1b34cedbd974a5801f8d922121126/runtime/vm/isolate_reload_test.cc#L690
+ 
+ class A {
+-  int field = 20;
++  int field = 10;
+ }
+ 
+ var savedA = A();
+*/