dart-lang#2559. Add tests for augment libraries errors

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t01.dart

@@ -0,0 +1,57 @@
+// 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 It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in the
+/// main library.
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'defining_augmentation_A03_t01_lib.dart';
+
+class C {}
+
+mixin M {}
+
+enum E {e;}
+
+void foo() {}
+
+typedef void Foo();
+
+typedef StringAlias = String;
+
+int get getter => 42;
+
+void set setter(int _) {}
+
+extension Ext on List {}
+
+extension type ET(int _) {}
+
+var x = 0;
+
+const c = 0;
+
+main() {
+  print(C);
+  print(M);
+  print(E);
+  print(foo);
+  print(Foo);
+  print(StringAlias);
+  print(getter);
+  setter = 1;
+  print(List);
+  print(ET);
+  print(x);
+  print(c);
+}

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t01_lib.dart

@@ -0,0 +1,78 @@
+// 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 It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in the
+/// main library.
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+library augment 'defining_augmentation_A03_t01.dart';
+
+class C {}
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+mixin M {}
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+enum E {e;}
+//   ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+void foo() {}
+//   ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+typedef void Foo();
+//           ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+typedef StringAlias = String;
+//      ^^^^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+int get getter => 42;
+//      ^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+void set setter(int _) {}
+//       ^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+extension Ext on List {}
+//        ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+extension type ET(int _) {}
+//             ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+var x = 0;
+//  ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+const c = 0;
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t02.dart

@@ -0,0 +1,94 @@
+// 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 It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in the
+/// main library. Test the case when an entry point (function `main()`) is in an
+/// augmentation library
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+library augment 'defining_augmentation_A03_t02_main.dart';
+
+class C {}
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+mixin M {}
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+enum E {e;}
+//   ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+void foo() {}
+//   ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+typedef void Foo();
+//           ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+typedef StringAlias = String;
+//      ^^^^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+int get getter => 42;
+//      ^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+void set setter(int _) {}
+//       ^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+extension Ext on List {}
+//        ^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+extension type ET(int _) {}
+//             ^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+var x = 0;
+//  ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+const c = 0;
+//    ^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+main() {
+  print(C);
+  print(M);
+  print(E);
+  print(foo);
+  print(Foo);
+  print(StringAlias);
+  print(getter);
+  setter = 1;
+  print(List);
+  print(ET);
+  print(x);
+  print(c);
+}

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t02_main.dart

@@ -0,0 +1,43 @@
+// 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 It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in the
+/// main library. Test the case when an entry point (function `main()`) is in an
+/// augmentation library
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'defining_augmentation_A03_t02.dart';
+
+class C {}
+
+mixin M {}
+
+enum E {e;}
+
+void foo() {}
+
+typedef void Foo();
+
+typedef StringAlias = String;
+
+int get getter => 42;
+
+void set setter(int _) {}
+
+extension Ext on List {}
+
+extension type ET(int _) {}
+
+var x = 0;
+
+const c = 0;

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t03.dart

@@ -0,0 +1,34 @@
+// 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 It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in another
+/// augmentation of the same library.
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'defining_augmentation_A03_t03_lib1.dart';
+import augment 'defining_augmentation_A03_t03_lib2.dart';
+
+main() {
+  print(C);
+  print(M);
+  print(E);
+  print(foo);
+  print(Foo);
+  print(StringAlias);
+  print(getter);
+  setter = 1;
+  print(List);
+  print(ET);
+  print(x);
+  print(c);
+}

LanguageFeatures/Augmentation-libraries/defining_augmentation_A03_t03_lib1.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.
+
+/// @assertion It is a compile-time error if:
+/// - A top-level declaration in an augmentation has the same name as a
+///   declaration in the main library or another of its augmentations (unless it
+///   is an augmenting declaration)
+///
+/// @description Checks that it is a compile-time error if a top-level
+/// declaration in an augmentation has the same name as a declaration in another
+/// augmentation of the same library.
+/// @author [email protected]
+/// @issue 55113
+
+// SharedOptions=--enable-experiment=macros
+
+library augment 'defining_augmentation_A03_t03.dart';
+
+class C {}
+
+mixin M {}
+
+enum E {e;}
+
+void foo() {}
+
+typedef void Foo();
+
+typedef StringAlias = String;
+
+int get getter => 42;
+
+void set setter(int _) {}
+
+extension Ext on List {}
+
+extension type ET(int _) {}
+
+var x = 0;
+
+const c = 0;