#2559. Add more tests for augmenting enum members and values. (#2897)

Author: sgrekhov

LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A01_t02.dart renamed to LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A05_t01.dart

@@ -2,16 +2,17 @@
 // 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 Enum values can only be augmented by enum values, and the
-/// implicit getter introduced by them is not augmentable.
+/// @assertion Some enum members can not be augmented: It is a compile-time
+/// error if an augmenting declaration in an enum declaration (introductory or
+/// augmenting) has the name `values`, `index`, `hashCode`, or `==`.
 ///
 /// @description Checks that it is a compile-time error to augment enum's
 /// `values` getter.
 /// @author [email protected]
 
 // SharedOptions=--enable-experiment=macros
 
-part 'augmenting_enum_values_A01_t02_lib.dart';
+part 'augmenting_enum_values_A05_t01_lib.dart';
 
 enum E1 {
   e0;

LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A01_t02_lib.dart renamed to LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A05_t01_lib.dart

@@ -2,16 +2,17 @@
 // 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 Enum values can only be augmented by enum values, and the
-/// implicit getter introduced by them is not augmentable.
+/// @assertion Some enum members can not be augmented: It is a compile-time
+/// error if an augmenting declaration in an enum declaration (introductory or
+/// augmenting) has the name `values`, `index`, `hashCode`, or `==`.
 ///
 /// @description Checks that it is a compile-time error to augment enum's
 /// `values` getter.
 /// @author [email protected]
 
 // SharedOptions=--enable-experiment=macros
 
-part of 'augmenting_enum_values_A01_t02.dart';
+part of 'augmenting_enum_values_A05_t01.dart';
 
 augment enum E1 {
   augment e0;

LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A05_t02.dart

@@ -0,0 +1,55 @@
+// 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 Some enum members can not be augmented: It is a compile-time
+/// error if an augmenting declaration in an enum declaration (introductory or
+/// augmenting) has the name `values`, `index`, `hashCode`, or `==`.
+///
+/// @description Checks that it is a compile-time error to augment enum's
+/// `index`, `hashCode` or `==` members.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=macros
+
+enum E1 {
+  e0;
+}
+
+augment enum E1 {
+  augment e0;
+  augment int get index => 0;
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E2 {
+  e0;
+}
+
+augment enum E2 {
+  augment e0;
+  augment int get hashCode => 0;
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E3 {
+  e0;
+}
+
+augment enum E3 {
+  augment e0;
+  augment bool operator ==(Object other) => true;
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(E1);
+  print(E2);
+  print(E3);
+}

LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A05_t03.dart

@@ -0,0 +1,55 @@
+// 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 Some enum members can not be augmented: It is a compile-time
+/// error if an augmenting declaration in an enum declaration (introductory or
+/// augmenting) has the name `values`, `index`, `hashCode`, or `==`.
+///
+/// @description Checks that it is a compile-time error if an enum's
+/// augmentation declares `index`, `hashCode` or `==` members.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=macros
+
+enum E1 {
+  e0;
+}
+
+augment enum E1 {
+  augment e0;
+  int get index => 0;
+//        ^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E2 {
+  e0;
+}
+
+augment enum E2 {
+  augment e0;
+  int get hashCode => 0;
+//        ^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E3 {
+  e0;
+}
+
+augment enum E3 {
+  augment e0;
+  bool operator ==(Object other) => true;
+//              ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(E1);
+  print(E2);
+  print(E3);
+}

LanguageFeatures/Augmentation-libraries/augmenting_enum_values_A05_t04.dart

@@ -0,0 +1,58 @@
+// 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 Some enum members can not be augmented: It is a compile-time
+/// error if an augmenting declaration in an enum declaration (introductory or
+/// augmenting) has the name `values`, `index`, `hashCode`, or `==`.
+///
+/// @description Checks that it is not an error to declare or augment `name`
+/// member or property.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=macros
+
+import '../../Utils/expect.dart';
+
+enum E1 {
+  e0;
+}
+
+augment enum E1 {
+  augment e0;
+  String get name => "name";
+}
+
+enum E2 {
+  e0;
+  String get name => "name1";
+}
+
+augment enum E2 {
+  augment e0;
+  augment String get name => "name2";
+}
+
+enum E3 {
+  e0;
+}
+
+augment enum E3 {
+  augment e0,
+  name;
+}
+
+enum E4 {
+  e0, name;
+}
+
+augment enum E4 {
+  augment name;
+}
+
+main() {
+  Expect.equals("name", E1.e0.name);
+  Expect.equals("name2", E2.e0.name);
+  Expect.equals("E3.name", E3.name);
+  Expect.equals("E4.name", E4.name);
+}