#3329. Add tests for "corresponding public name"

LanguageFeatures/Private-named-parameters/static_semantics_A01_t01.dart

@@ -0,0 +1,59 @@
+// Copyright (c) 2025, 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 Given a named initializing formal or field parameter (for a
+/// primary constructor) with private name `p` in constructor `C`:
+/// - If `p` has no corresponding public name `n`, then compile-time error.
+///
+/// @description Check that it is a compile-time error if a named initializing
+/// formal parameter has a private name that has no corresponding public name.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=private-named-parameters
+
+class C {
+  String _p;
+  C({this.__p = ""});
+//        ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  C._({required this.__p});
+//                   ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET._(String _p) {
+  ET({this.__p = ""});
+//         ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  ET.named({required this.__p});
+//                        ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E {
+  e0;
+
+  final String _p;
+  const E({this.__p = ""});
+//              ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  const E.named({required this.__p});
+//                             ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(C);
+  print(ET);
+  print(E);
+}

LanguageFeatures/Private-named-parameters/static_semantics_A01_t02.dart

@@ -0,0 +1,59 @@
+// Copyright (c) 2025, 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 Given a named initializing formal or field parameter (for a
+/// primary constructor) with private name `p` in constructor `C`:
+/// - If `p` has no corresponding public name `n`, then compile-time error.
+///
+/// @description Check that it is a compile-time error if a named initializing
+/// formal parameter has a private name that has no corresponding public name.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=private-named-parameters
+
+class C {
+  String _1;
+  C({this._1 = ""});
+//        ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  C._({required this._1});
+//                   ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET._(String _1) {
+  ET({this._1 = ""});
+//         ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  ET.named({required this._1});
+//                        ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E {
+  e0;
+
+  final String _1;
+  const E({this._1 = ""});
+//              ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  const E.named({required this._1});
+//                             ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(C);
+  print(ET);
+  print(E);
+}

LanguageFeatures/Private-named-parameters/static_semantics_A01_t03.dart

@@ -0,0 +1,84 @@
+// Copyright (c) 2025, 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 Given a named initializing formal or field parameter (for a
+/// primary constructor) with private name `p` in constructor `C`:
+/// - If `p` has no corresponding public name `n`, then compile-time error.
+///
+/// @description Check that it is a compile-time error if a named formal
+/// parameter of a declaring constructor has a private name with no
+/// corresponding public name.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=private-named-parameters,declaring-constructors
+
+class C1({var String __p}) {
+//                   ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+class C2({required final String _1}) {
+//                              ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+class C3 {
+  this({required final String __p});
+//                            ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+class C4 {
+  this({var String _1 = ""});
+//                 ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET1 {
+  this({final String __p = ""});
+//                   ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET2 {
+  this({final String _1 = ""});
+//                   ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E1({required final String __p}) {
+//                             ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  e0(_p: "");
+//   ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E2 {
+  e0;
+
+  const this({final String _1 = ""});
+//                         ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(C1);
+  print(C2);
+  print(C3);
+  print(C4);
+  print(ET1);
+  print(ET2);
+  print(E1);
+  print(E2);
+}

LanguageFeatures/Private-named-parameters/static_semantics_A02_t01.dart

@@ -0,0 +1,65 @@
+// Copyright (c) 2025, 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 Given a named initializing formal or field parameter (for a
+/// primary constructor) with private name `p` in constructor `C`:
+/// - If `p` has no corresponding public name `n`, then compile-time error. You
+///   can't use a private name for a named parameter unless there is a valid
+///   public name that could be used at the call site.
+/// - If any other parameter in `C` has declared name `p` or `n`, then
+///   compile-time error.
+///
+/// @description Check that it is a compile-time error if any other parameter in
+/// `C` has declared name `p` or `n`.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=private-named-parameters
+
+class C {
+  String _p;
+  String p;
+  C(int? _p, {this._p = "", }) : p = "";
+//                 ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  C._({required this._p, this.p});
+//                            ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET._(String _p) {
+  ET(int _p, {this._p = ""});
+//                 ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  ET.named({required this._p, int? p});
+//                                 ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E {
+  e0(1);
+
+  final String _p;
+  final int? p;
+  const E(int? _p, {this._p = ""});
+//                       ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+  const E.named({required this._p, this.p});
+//                                      ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(C);
+  print(ET);
+  print(E);
+}

LanguageFeatures/Private-named-parameters/static_semantics_A02_t02.dart

@@ -0,0 +1,69 @@
+// Copyright (c) 2025, 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 Given a named initializing formal or field parameter (for a
+/// primary constructor) with private name `p` in constructor `C`:
+/// - If `p` has no corresponding public name `n`, then compile-time error. You
+///   can't use a private name for a named parameter unless there is a valid
+///   public name that could be used at the call site.
+/// - If any other parameter in `C` has declared name `p` or `n`, then
+///   compile-time error.
+///
+/// @description Check that it is a compile-time error if any other parameter in
+/// `C` has declared name `p` or `n`.
+/// @author [email protected]
+
+// SharedOptions=--enable-experiment=private-named-parameters,declaring-constructors
+
+class C1(int? _p, {var String _p = ""}) {
+//                            ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+class C2 {
+  this({final String _p = "", int p = 0});
+//                                ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET1 {
+  this(int _p, {final String _p = ""});
+//                           ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+extension type ET2 {
+  this({final String _p = "", int p = 0});
+//                                ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+enum E1(int? _p, {final String _p = ""}) {
+//                             ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  e0;
+}
+
+enum E2 {
+  e0;
+
+  const this({final String _p = "", final int? p});
+//                                             ^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+main() {
+  print(C1);
+  print(C2);
+  print(ET1);
+  print(ET2);
+  print(E1);
+  print(E2);
+}