diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01.dart
index 1004dc7efc..9ebe754f76 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01.dart
@@ -6,8 +6,8 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if a non-writable
-/// variable declaration is augmented with a setter.
+/// @description Checks that it is a compile-time error if an implicitly induced
+/// getter of a final variable declaration is augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
@@ -38,7 +38,7 @@ extension Ext on A {
   static final String staticVariable = "staticVariable";
 }
 
-extension type ET(String _) {
+extension type ET(String id) {
   static final String staticVariable = "staticVariable";
 }
 
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01_lib.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01_lib.dart
index 3dd789ae44..b01d169d52 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01_lib.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t01_lib.dart
@@ -6,9 +6,8 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if an augmenting
-/// declaration uses `augmented` when the augmented declaration has no concrete
-/// implementation.
+/// @description Checks that it is a compile-time error if an implicitly induced
+/// getter of a final variable declaration is augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
@@ -65,5 +64,9 @@ augment extension type ET {
   augment static void set staticVariable(String _) {}
 //^^^^^^^
 // [analyzer] unspecified
+// [cfe] unspecified
+  augment static void set id(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
 // [cfe] unspecified
 }
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02.dart
index 60026eaf17..078df4dab4 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02.dart
@@ -6,39 +6,40 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if a non-writable
-/// variable declaration is augmented with a setter. Test `late final` variables
+/// @description Checks that it is a compile-time error if an implicitly induced
+/// getter of a `late final` variable declaration with an initializer is
+/// augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
 
 import augment 'augmenting_members_A02_t02_lib.dart';
 
-late final String topLevelVariable;
+late final String topLevelVariable = "";
 
 class C {
-  static late final String staticVariable;
-  late final String instanceVariable;
+  static late final String staticVariable = "";
+  late final String instanceVariable = "";
 }
 
 mixin M {
-  static late final String staticVariable;
-  late final String instanceVariable;
+  static late final String staticVariable = "";
+  late final String instanceVariable = "";
 }
 
 enum E {
   e0;
-  static late final String staticVariable;
+  static late final String staticVariable = "";
 }
 
 class A {}
 
 extension Ext on A {
-  static late final String staticVariable;
+  static late final String staticVariable = "";
 }
 
 extension type ET(String _) {
-  static late final String staticVariable;
+  static late final String staticVariable = "";
 }
 
 main() {
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02_lib.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02_lib.dart
index 45591f42d4..0d8621b557 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02_lib.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t02_lib.dart
@@ -6,8 +6,9 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if a non-writable
-/// variable declaration is augmented with a setter. Test `late final` variables
+/// @description Checks that it is a compile-time error if an implicitly induced
+/// getter of a `late final` variable declaration with an initializer is
+/// augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03.dart
index fe642d21e0..3a70a4a64e 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03.dart
@@ -6,8 +6,8 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if a non-writable
-/// variable declaration is augmented with a setter. Test `const` variables.
+/// @description Checks that it is a compile-time error if a `const` variable
+/// declaration is augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03_lib.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03_lib.dart
index dc5c2d4fdf..59d63db07e 100644
--- a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03_lib.dart
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t03_lib.dart
@@ -6,8 +6,8 @@
 /// ...
 /// A non-writable variable declaration is augmented with a setter.
 ///
-/// @description Checks that it is a compile-time error if a non-writable
-/// variable declaration is augmented with a setter. Test `const` variables.
+/// @description Checks that it is a compile-time error if a `const` variable
+/// declaration is augmented with a setter.
 /// @author sgrekhov22@gmail.com
 
 // SharedOptions=--enable-experiment=macros
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04.dart
new file mode 100644
index 0000000000..69c0e05395
--- /dev/null
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04.dart
@@ -0,0 +1,54 @@
+// 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 non-writable variable declaration is augmented with a setter.
+///
+/// @description Checks that it is a compile-time error if a getter declaration
+/// is augmented with a setter.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmenting_members_A02_t04_lib.dart';
+
+String get topLevelGetter => "topLevelGetter";
+
+class C {
+  static String get staticGetter => "staticGetter";
+  String get instanceGetter => "instanceGetter";
+}
+
+mixin M {
+  static String get staticGetter => "staticGetter";
+  String get instanceGetter => "instanceGetter";
+}
+
+enum E {
+  e0;
+  static String get staticGetter => "staticGetter";
+  String get instanceGetter => "instanceGetter";
+}
+
+class A {}
+
+extension Ext on A {
+  static String get staticGetter => "staticGetter";
+  String get instanceGetter => "instanceGetter";
+}
+
+extension type ET(String _) {
+  static String get staticGetter => "staticGetter";
+  String get instanceGetter => "instanceGetter";
+}
+
+main() {
+  print(topLevelGetter);
+  print(C);
+  print(M);
+  print(E);
+  print(A);
+  print(ET);
+}
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04_lib.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04_lib.dart
new file mode 100644
index 0000000000..a806a31f9c
--- /dev/null
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t04_lib.dart
@@ -0,0 +1,76 @@
+// 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 non-writable variable declaration is augmented with a setter.
+///
+/// @description Checks that it is a compile-time error if a getter declaration
+/// is augmented with a setter.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+augment library 'augmenting_members_A02_t04.dart';
+
+/**/augment void set topLevelGetter(String _) {}
+//  ^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+
+augment class C {
+  augment static void set staticGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment void set instanceGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+augment mixin M {
+  augment static void set staticGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment void set instanceGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+augment enum E {
+  augment e0;
+  augment static void set staticGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment void set instanceGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+augment extension Ext {
+  augment static void set staticGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment void set instanceGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+augment extension type ET {
+  augment static void set staticGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment void set instanceGetter(String _) {}
+//^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05.dart
new file mode 100644
index 0000000000..8bcbe9ff91
--- /dev/null
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05.dart
@@ -0,0 +1,66 @@
+// 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 non-writable variable declaration is augmented with a setter.
+///
+/// @description Checks that it is not an error to augment a `late final`
+/// variable declaration with no initializer with a setter.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmenting_members_A02_t05_lib.dart';
+import '../../Utils/expect.dart';
+
+String _log = "";
+
+late final String topLevelVariable;
+
+class C {
+  static late final String staticVariable;
+  late final String instanceVariable;
+}
+
+mixin M {
+  static late final String staticVariable;
+  late final String instanceVariable;
+}
+
+enum E {
+  e0;
+  static late final String staticVariable;
+}
+
+class A {}
+
+extension Ext on A {
+  static late final String staticVariable;
+}
+
+extension type ET(String _) {
+  static late final String staticVariable;
+}
+
+class MA = Object with M;
+
+main() {
+  topLevelVariable = "a";
+  Expect.equals("Augmented: a", _log);
+  C.staticVariable = "b";
+  Expect.equals("Augmented: b", _log);
+  C().instanceVariable = "c";
+  Expect.equals("Augmented: c", _log);
+  M.staticVariable = "d";
+  Expect.equals("Augmented: d", _log);
+  MA().instanceVariable = "e";
+  Expect.equals("Augmented: e", _log);
+  E.staticVariable = "f";
+  Expect.equals("Augmented: f", _log);
+  Ext.staticVariable = "g";
+  Expect.equals("Augmented: g", _log);
+  ET.staticVariable = "h";
+  Expect.equals("Augmented: h", _log);
+}
diff --git a/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05_lib.dart b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05_lib.dart
new file mode 100644
index 0000000000..6d26f30d9f
--- /dev/null
+++ b/LanguageFeatures/Augmentation-libraries/augmenting_members_A02_t05_lib.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 It is a compile-time error if:
+/// ...
+/// A non-writable variable declaration is augmented with a setter.
+///
+/// @description Checks that it is not an error to augment a `late final`
+/// variable declaration with no initializer with a setter.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+augment library 'augmenting_members_A02_t05.dart';
+
+augment void set topLevelVariable(String v) {
+  _log = "Augmented: $v";
+}
+
+augment class C {
+  augment static void set staticVariable(String v) {
+    _log = "Augmented: $v";
+  }
+
+  augment void set instanceVariable(String v) {
+    _log = "Augmented: $v";
+  }
+}
+
+augment mixin M {
+  augment static void set staticVariable(String v) {
+    _log = "Augmented: $v";
+  }
+
+  augment void set instanceVariable(String v) {
+    _log = "Augmented: $v";
+  }
+}
+
+augment enum E {
+  augment e0;
+  augment static void set staticVariable(String v) {
+    _log = "Augmented: $v";
+  }
+}
+
+augment extension Ext {
+  augment static void set staticVariable(String v) {
+    _log = "Augmented: $v";
+  }
+}
+
+augment extension type ET {
+  augment static void set staticVariable(String v) {
+    _log = "Augmented: $v";
+  }
+}