[Distributed] avoid sleep in addUnlessCancelled test

Author: ktoso

test/Concurrency/Runtime/async_taskgroup_addUnlessCancelled.swift

@@ -3,28 +3,24 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 
-// rdar://76038845
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
 
-import Dispatch
-
 @available(SwiftStdlib 6.0, *)
 func test_withTaskGroup_addUnlessCancelled() async throws {
   let task = Task {
     await withTaskGroup(of: Void.self) { group in
       print("Inner: Sleep...")
-      try? await Task.sleep(nanoseconds: 2_000_000_000)
+      try? await Task.sleep(for: .seconds(60)) // we'll never actually wait 10 seconds, as this will be woken up by cancel
       print("Inner: Task.isCancelled: \(Task.isCancelled)")
 
       let added = group.addTaskUnlessCancelled {
         print("Added Task! Child Task.isCancelled: \(Task.isCancelled)")
       }
-      print("Inner: Task added = \(added)")  // CHECK: Task added = false
+      print("Inner: Task added = \(added)")  // CHECK: Inner: Task added = false
     }
   }
 
-  try? await Task.sleep(nanoseconds: 1_000_000)
   print("Outer: Cancel!")
   task.cancel()
   print("Outer: Cancelled")
@@ -37,17 +33,16 @@ func test_withDiscardingTaskGroup_addUnlessCancelled() async throws {
   let task = Task {
     await withDiscardingTaskGroup { group in
       print("Inner: Sleep...")
-      try? await Task.sleep(nanoseconds: 2_000_000_000)
+      try? await Task.sleep(for: .seconds(60)) // we'll never actually wait 10 seconds, as this will be woken up by cancel
       print("Inner: Task.isCancelled: \(Task.isCancelled)")
 
       let added = group.addTaskUnlessCancelled {
         print("Added Task! Child Task.isCancelled: \(Task.isCancelled)")
       }
-      print("Inner: Task added = \(added)")  // CHECK: Task added = false
+      print("Inner: Task added = \(added)")  // CHECK: Inner: Task added = false
     }
   }
 
-  try? await Task.sleep(nanoseconds: 1_000_000)
   print("Outer: Cancel!")
   task.cancel()
   print("Outer: Cancelled")