[Distributed] add test for remoteCall on dist property (#71052)

Author: ktoso

test/Distributed/Runtime/distributed_actor_func_calls_remoteCall_property.swift

@@ -0,0 +1,55 @@
+// RUN: %empty-directory(%t)
+// RUN: %target-swift-frontend-emit-module -emit-module-path %t/FakeDistributedActorSystems.swiftmodule -module-name FakeDistributedActorSystems -disable-availability-checking %S/../Inputs/FakeDistributedActorSystems.swift
+// RUN: %target-build-swift -module-name main  -Xfrontend -disable-availability-checking -j2 -parse-as-library -I %t %s %S/../Inputs/FakeDistributedActorSystems.swift -o %t/a.out
+// RUN: %target-codesign %t/a.out
+// RUN: %target-run %t/a.out | %FileCheck %s --color
+
+// REQUIRES: executable_test
+// REQUIRES: concurrency
+// REQUIRES: distributed
+
+// rdar://76038845
+// UNSUPPORTED: use_os_stdlib
+// UNSUPPORTED: back_deployment_runtime
+
+// UNSUPPORTED: OS=windows-msvc
+
+import Distributed
+import FakeDistributedActorSystems
+
+typealias DefaultDistributedActorSystem = FakeRoundtripActorSystem
+
+distributed actor MyActor {
+  distributed var computed: String {
+    "Hello"
+  }
+
+  distributed func bar(other: MyActor) async throws {
+    print("print inside bar(other:)")
+    print(try await other.computed)
+  }
+}
+
+func test() async throws {
+  let system = DefaultDistributedActorSystem()
+
+  let local = MyActor(actorSystem: system)
+  let res = try await local.computed
+  print("local response: \(res)")
+  // CHECK: local response: Hello
+
+  let ref = try MyActor.resolve(id: local.id, using: system)
+  try await ref.computed
+  // CHECK: >> remoteCall: on:main.MyActor, target:main.MyActor.computed(), invocation:FakeInvocationEncoder(genericSubs: [], arguments: [], returnType: Optional(Swift.String), errorType: nil), throwing:Swift.Never, returning:Swift.String
+  // CHECK: << onReturn: Hello
+
+  try await MyActor(actorSystem: system).bar(other: ref)
+  // CHECK: print inside bar(other:)
+  // CHECK: Hello
+}
+
+@main struct Main {
+  static func main() async {
+    try! await test()
+  }
+}