#2477. Add more constant evaluation tests (#2484)

Add more constant evaluation tests

LanguageFeatures/Extension-types/static_analysis_extension_types_A20_t07.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.
+
+/// @assertion The extension type erasure of an extension type V is obtained by
+/// recursively replacing every subterm of V which is an extension type by the
+/// corresponding representation type.
+///
+/// Let X1 extends B1, .. Xs extends Bs be a declaration of the type parameters
+/// of a generic entity (it could be a generic class, extension type, mixin,
+/// typedef, or function). Let BBj be the extension type erasure of
+/// Bj, for j in 1 .. s. It is a compile-time error if
+/// X1 extends BB1, .. Xs extends BBs has any compile-time errors.
+///
+/// @description Check that the erasure of an extension type `V` is obtained by
+/// recursively replacing every subterm of `V` which is an extension type by the
+/// corresponding representation type.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=inline-class
+
+class Check {
+  const Check(Object? v, {required Object? eq})
+      : assert(v == eq, "Not equal ${(v, eq: eq)}");
+}
+
+extension type const Ext1(Object? value) {}
+extension type const Ext2(Object value) implements Object {}
+
+void main() {
+  const Check([Ext1(1)], eq: <Object?>[1,]);
+  const Check([Ext2(1)], eq: <Object>[1,]);
+  const Check({Ext1(1)}, eq: <Object?>{1,});
+  const Check({Ext2(1)}, eq: <Object>{1,});
+  const Check({Ext1(1): Ext1(2)}, eq: <Object?, Object?>{1: 2});
+  const Check({Ext2(1): Ext1(2)}, eq: <Object, Object?>{1: 2});
+  const Check({Ext1(1): Ext2(2)}, eq: <Object?, Object>{1: 2});
+  const Check({Ext2(1): Ext2(2)}, eq: <Object, Object>{1: 2});
+}

LanguageFeatures/Extension-types/static_analysis_extension_types_A20_t08.dart

@@ -0,0 +1,38 @@
+// 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.
+
+/// @assertion The extension type erasure of an extension type V is obtained by
+/// recursively replacing every subterm of V which is an extension type by the
+/// corresponding representation type.
+///
+/// Let X1 extends B1, .. Xs extends Bs be a declaration of the type parameters
+/// of a generic entity (it could be a generic class, extension type, mixin,
+/// typedef, or function). Let BBj be the extension type erasure of
+/// Bj, for j in 1 .. s. It is a compile-time error if
+/// X1 extends BB1, .. Xs extends BBs has any compile-time errors.
+///
+/// @description Check that the erasure of an extension type `V` is obtained by
+/// recursively replacing every subterm of `V` which is an extension type by the
+/// corresponding representation type.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=inline-class
+
+class Check {
+  const Check(Object? v, {required Object? eq})
+      : assert(v == eq, "Not equal ${(v, eq: eq)}");
+}
+
+extension type const IntET1(int _) {}
+extension type const IntET2(int _) implements int {}
+
+extension type const MapET1<X>(Map<IntET1, X> _) {}
+extension type const MapET2<X>(Map<IntET2, X> _) {}
+
+void main() {
+  const Check([MapET1<List<IntET1>>({})], eq: [<int, List<int>>{}]);
+  const Check([MapET1<List<IntET2>>({})], eq: [<int, List<int>>{}]);
+  const Check([MapET2<List<IntET1>>({})], eq: [<int, List<int>>{}]);
+  const Check([MapET2<List<IntET2>>({})], eq: [<int, List<int>>{}]);
+}