[Tests] TypeWrappers: Add test-cases to cover applying type wrapper to an actor

Author: xedin

test/Interpreter/Inputs/type_wrapper_defs.swift

@@ -136,3 +136,13 @@ public struct PersonWithUnmanagedTest {
 
   @PropWrapper public var favoredColor: String = "red"
 }
+
+@Wrapper
+public actor Actor {
+  public var name: String
+  @PropWrapper public var age: Int? = nil
+
+  public func setAge(_ newAge: Int) async {
+    age = newAge
+  }
+}

test/Interpreter/type_wrapper_with_actors.swift

@@ -0,0 +1,33 @@
+// RUN: %empty-directory(%t)
+// RUN: %target-build-swift -target %target-cpu-apple-macosx10.15 -enable-experimental-feature TypeWrappers -parse-as-library -emit-library -emit-module-path %t/type_wrapper_defs.swiftmodule -module-name type_wrapper_defs %S/Inputs/type_wrapper_defs.swift -o %t/%target-library-name(type_wrapper_defs)
+// RUN: %target-build-swift -target %target-cpu-apple-macosx10.15 -ltype_wrapper_defs -module-name main -I %t -L %t %s -o %t/main %target-rpath(%t)
+// RUN: %target-codesign %t/main
+// RUN: %target-run %t/main %t/%target-library-name(type_wrapper_defs) | %FileCheck %s
+
+// REQUIRES: executable_test
+// REQUIRES: asserts
+// REQUIRES: concurrency
+
+// rdar://76038845
+// REQUIRES: concurrency_runtime
+// UNSUPPORTED: back_deployment_runtime
+
+// REQUIRES: OS=macosx
+
+import type_wrapper_defs
+
+let a = Actor(name: "Arhtur Dent")
+await print(a.name)
+// CHECK: in getter
+// CHECK-NEXT: Arhtur Dent
+await print(a.age)
+// CHECK: in getter
+// CHECK-NEXT: nil
+
+await a.setAge(30)
+// CHECK: in getter
+// CHECK-NEXT: in setter => PropWrapper<Optional<Int>>(value: Optional(30))
+
+await print(a.age)
+// CHECK: in getter
+// CHECK-NEXT: 30

test/type/type_wrapper.swift

@@ -380,3 +380,21 @@ func testDeclarationsWithUnmanagedProperties() {
 
   _ = OnlyLazyLetAndComputed(name: "Arthur Dent") // Ok
 }
+
+func testActors() async {
+  @NoopWrapper
+  actor Person {
+    var name: String
+    // expected-note@-1 {{mutation of this property is only permitted within the actor}}
+    var age: Int
+    // expected-note@-1 {{mutation of this property is only permitted within the actor}}
+  }
+
+  let person = Person(name: "Arthur Dent", age: 30)
+
+  _ = await person.name
+  _ = await person.age
+
+  person.name = "NoName" // expected-error {{actor-isolated property 'name' can not be mutated from a non-isolated context}}
+  person.age = 0 // expected-error {{actor-isolated property 'age' can not be mutated from a non-isolated context}}
+}