#2559. Add augmenting expression tests for fields with no initializers

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t07.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that if an `augmented` is used in an augmenting field's
+/// initializer and the member being augmented is a nullable field with no
+/// initializer then `augmented` evaluates to `null`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmented_expression_A03_t07_lib.dart';
+import '../../Utils/expect.dart';
+
+final String augmented = "Augmented variable, should not be used";
+
+String? topLevelVariable;
+
+class C {
+  static String? staticVariable;
+  String? instanceVariable;
+}
+
+mixin M {
+  static String? staticVariable;
+  String? instanceVariable;
+}
+
+enum E {
+  e1;
+  static String? staticVariable;
+}
+
+class A {}
+
+extension Ext on A {
+  static String? staticVariable;
+}
+
+class MA = Object with M;
+
+main() {
+  Expect.equals("Augment: null", topLevelVariable);
+  Expect.equals("Augment: null", C.staticVariable);
+  Expect.equals("Augment: null", C().instanceVariable);
+  Expect.equals("Augment: null", M.staticVariable);
+  Expect.equals("Augment: null", MA().instanceVariable);
+  Expect.equals("Augment: null", E.staticVariable);
+  Expect.equals("Augment: null", Ext.staticVariable);
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t07_lib.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that if an `augmented` is used in an augmenting field's
+/// initializer and the member being augmented is a nullable field with no
+/// initializer then `augmented` evaluates to `null`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+augment library 'augmented_expression_A03_t07.dart';
+
+augment String? topLevelVariable = "Augment: $augmented";
+
+augment class C {
+  augment static String? staticVariable = "Augment: $augmented";
+  augment String? instanceVariable = "Augment: $augmented";
+}
+
+augment mixin M {
+  augment static String? staticVariable = "Augment: $augmented";
+  augment String? instanceVariable = "Augment: $augmented";
+}
+
+augment enum E {
+  augment e1;
+
+  augment static String? staticVariable = "Augment: $augmented";
+}
+
+augment extension Ext {
+  augment static String? staticVariable = "Augment: $augmented";
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t08.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that if an `augmented` is used in an augmenting field's
+/// initializer and the member being augmented is a nullable field with no
+/// initializer then `augmented` evaluates to `null`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmented_expression_A03_t08_lib.dart';
+import '../../Utils/expect.dart';
+
+final String augmented = "Augmented variable, should not be used";
+
+Function? topLevelVariable;
+
+class C {
+  static Function? staticVariable;
+  Function? instanceVariable;
+}
+
+mixin M {
+  static Function? staticVariable;
+  Function? instanceVariable;
+}
+
+enum E {
+  e1;
+  static Function? staticVariable;
+}
+
+class A {}
+
+extension Ext on A {
+  static Function? staticVariable;
+}
+
+class MA = Object with M;
+
+main() {
+  Expect.equals("Augment: null", topLevelVariable());
+  Expect.equals("Augment: null", C.staticVariable());
+  Expect.equals("Augment: null", C().instanceVariable());
+  Expect.equals("Augment: null", M.staticVariable());
+  Expect.equals("Augment: null", MA().instanceVariable());
+  Expect.equals("Augment: null", E.staticVariable());
+  Expect.equals("Augment: null", Ext.staticVariable());
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t08_lib.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that if an `augmented` is used in an augmenting field's
+/// initializer and the member being augmented is a nullable field with no
+/// initializer then `augmented` evaluates to `null`.
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+augment library 'augmented_expression_A03_t08.dart';
+
+augment Function? topLevelVariable = () {
+  return "Augment: $augmented";
+};
+
+augment class C {
+  augment static Function? staticVariable = () {
+    return "Augment: $augmented";
+  };
+  augment Function? instanceVariable = () {
+    return "Augment: $augmented";
+  };
+}
+
+augment mixin M {
+  augment static Function? staticVariable = () {
+    return "Augment: $augmented";
+  };
+  augment Function? instanceVariable = () {
+    return "Augment: $augmented";
+  };
+}
+
+augment enum E {
+  augment e1;
+  augment static Function? staticVariable = () {
+    return "Augment: $augmented";
+  };
+}
+
+augment extension Ext {
+  augment static Function? staticVariable = () {
+    return "Augment: $augmented";
+  };
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t10.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that it is a compile-time error to use `augmented` in an
+/// augmenting field's initializer if the member being augmented is not a field
+/// with an initializer and the variable's type is not-nullable
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmented_expression_A03_t10_lib.dart';
+
+final String augmented = "Augmented variable, should not be used";
+
+class C {
+  String instanceVariable;
+  final String finalInstanceVariable;
+  C(this.instanceVariable, this.finalInstanceVariable);
+}
+
+enum E {
+  e1("x");
+  final String finalInstanceVariable;
+  const E(this.finalInstanceVariable);
+}
+
+main() {
+  print(C);
+  print(E);
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t10_lib.dart

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+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that it is a compile-time error to use `augmented` in an
+/// augmenting field's initializer if the member being augmented is not a field
+/// with an initializer and the variable's type is not-nullable
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+augment library 'augmented_expression_A03_t10.dart';
+
+augment class C {
+  augment String instanceVariable = "Augment: $augmented";
+//                                             ^^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+  augment final String finalInstanceVariable = "Augment: $augmented";
+//                                                        ^^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}
+
+augment enum E {
+  augment e1("x");
+
+  augment final String finalInstanceVariable = "Augment: $augmented";
+//                                                        ^^^^^^^^^
+// [analyzer] unspecified
+// [cfe] unspecified
+}

LanguageFeatures/Augmentation-libraries/augmented_expression_A03_t11.dart

@@ -0,0 +1,46 @@
+// 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 exact result of an `augmented` expression depends on what is
+/// being augmented, but it generally follows the same rules as any normal
+/// identifier:
+/// ...
+/// - Augmenting fields: Within an augmenting field, augmented can only be used
+///   in an initializer expression, and refers to the original field's
+///   initializer expression, which is immediately evaluated.
+///
+/// If augmented refers to a variable declaration (as defined by a declaration
+/// and a number of prior augmentations) with no initializer expression, and the
+/// variable's type is nullable, augmented evaluates to null. If the variable's
+/// type is not nullable, then it's a compile-time error.
+///
+/// @description Checks that it is a compile-time error to use `augmented` in an
+/// augmenting field's initializer if the member being augmented is not a field
+/// with an initializer and the variable's type is not-nullable
+/// @author sgrekhov22@gmail.com
+
+// SharedOptions=--enable-experiment=macros
+
+import augment 'augmented_expression_A03_t11_lib.dart';
+
+final String augmented = "Augmented variable, should not be used";
+
+class C {
+  Function instanceVariable;
+  final Function finalInstanceVariable;
+  C(this.instanceVariable, this.finalInstanceVariable);
+}
+
+void foo() {}
+
+enum E {
+  e1(foo);
+  final Function finalInstanceVariable;
+  const E(this.finalInstanceVariable);
+}
+
+main() {
+  print(C);
+  print(E);
+}