[Distributed] More tests for local actor init, with specific transport type (#39788)

test/Distributed/distributed_actor_initialization.swift

@@ -4,10 +4,8 @@
 
 import _Distributed
 
-@available(SwiftStdlib 5.5, *)
 distributed actor OK0 { }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor OK1 {
   var x: Int = 1
   // ok, since all fields are initialized, the constructor can be synthesized
@@ -15,21 +13,18 @@ distributed actor OK1 {
 
 // TODO(distributed): test all the FIXITs in this file
 
-@available(SwiftStdlib 5.5, *)
 distributed actor Bad1 {
   init() {
     // expected-error@-1 {{designated distributed actor initializer 'init()' is missing required ActorTransport parameter}}
   }
 }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor Bad12 {
   init(x: String) {
     // expected-error@-1 {{designated distributed actor initializer 'init(x:)' is missing required ActorTransport parameter}}
   }
 }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor OK2 {
   var x: Int
 
@@ -38,7 +33,6 @@ distributed actor OK2 {
   }
 }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor Bad2 {
   var x: Int = 1
 
@@ -47,7 +41,6 @@ distributed actor Bad2 {
   }
 }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor OK3 {
   var x: Int
 
@@ -56,7 +49,6 @@ distributed actor OK3 {
   }
 }
 
-@available(SwiftStdlib 5.5, *)
 distributed actor OKMulti {
 
   convenience init(y: Int, transport: ActorTransport) { // ok
@@ -64,3 +56,53 @@ distributed actor OKMulti {
   }
 
 }
+
+distributed actor OKMultiDefaultValues {
+
+  convenience init(y: Int, transport: ActorTransport, x: Int = 1234) { // ok
+    self.init(transport: transport)
+  }
+
+}
+
+// ==== ------------------------------------------------------------------------
+// MARK: Specific transport
+
+struct ActorAddress: ActorIdentity {
+  let address: String
+  init(parse address : String) {
+    self.address = address
+  }
+}
+
+struct FakeTransport: ActorTransport {
+  func decodeIdentity(from decoder: Decoder) throws -> AnyActorIdentity {
+    fatalError("not implemented \(#function)")
+  }
+
+  func resolve<Act>(_ identity: AnyActorIdentity, as actorType: Act.Type) throws -> Act?
+          where Act: DistributedActor {
+    return nil
+  }
+
+  func assignIdentity<Act>(_ actorType: Act.Type) -> AnyActorIdentity
+          where Act: DistributedActor {
+    .init(ActorAddress(parse: ""))
+  }
+
+  public func actorReady<Act>(_ actor: Act)
+          where Act: DistributedActor {
+    print("\(#function):\(actor)")
+  }
+
+  func resignIdentity(_ id: AnyActorIdentity) {}
+}
+
+distributed actor OKSpecificTransportType {
+
+  init(y: Int, transport fake: FakeTransport) { // ok
+    defer { fake.actorReady(self) }
+    // nothing
+  }
+
+}