ci: disable OperationQueue tests on non-macos platforms (#5)

* ci: fix test failure

* ci: fix rounding off errors for tests

* ci: cancel underlying task on deinit of operation

* ci: disable `OperationQueue` tests on non-macos platform

Sources/AsyncObjects/CancellationSource.swift

@@ -131,6 +131,7 @@ public actor CancellationSource {
     /// and propagate cancellation to linked cancellation sources.
     ///
     /// - Parameter nanoseconds: The delay after which cancellation event triggered.
+    /// - Throws: `CancellationError` if cancelled.
     @Sendable
     public func cancel(afterNanoseconds nanoseconds: UInt64) async throws {
         try await Task.sleep(nanoseconds: nanoseconds)

Sources/AsyncObjects/Future.swift

@@ -337,6 +337,8 @@ extension Future where Failure == Error {
     /// Immediately returns if `Future` is fulfilled otherwise waits asynchronously
     /// for `Future` to be fulfilled. If the Future terminates with an error,
     /// the awaiting caller receives the error instead.
+    ///
+    /// - Throws: If future rejected with error or `CancellationError` if cancelled.
     public var value: Output {
         get async throws {
             if let result = result { return try result.get() }

Sources/AsyncObjects/Locker.swift

@@ -98,6 +98,7 @@ public final class Locker: Equatable, Hashable, Sendable {
     ///
     /// - Parameter critical: The critical task to perform.
     /// - Returns: The result from the critical task.
+    /// - Throws: Error occurred running critical task.
     @discardableResult
     public func perform<R>(_ critical: () throws -> R) rethrows -> R {
         lock()

Sources/AsyncObjects/TaskOperation.swift

@@ -114,12 +114,6 @@ public final class TaskOperation<R: Sendable>: Operation, AsyncObject,
     ///   - operation: The asynchronous operation to execute.
     ///
     /// - Returns: The newly created asynchronous operation.
-    ///
-    /// - Important: When specifying to track child tasks to true,
-    ///              be sure that you aren't keeping strong reference
-    ///              to ``TaskTracker/current`` inside your asynchronous operation.
-    ///              Otherwise, operation won't complete as soon asynchronous operation
-    ///              and their child tasks complete.
     public init(
         trackChildTasks shouldTrackChildTasks: Bool = false,
         synchronizedWith locker: Locker = .init(),
@@ -134,6 +128,7 @@ public final class TaskOperation<R: Sendable>: Operation, AsyncObject,
     }
 
     deinit {
+        execTask?.cancel()
         locker.perform { self.continuations.forEach { $0.value.cancel() } }
     }
 

Sources/AsyncObjects/TaskTracker.swift

@@ -9,7 +9,7 @@
 ///              Do not keep strong reference of this object, as then object won't
 ///              deallocate as soon asynchronous operations and their child tasks
 ///              complete.
-public final class TaskTracker: Sendable {
+final class TaskTracker: Sendable {
     /// The tracker associated with current task.
     ///
     /// Use the `withValue` method to assign a tracker to asynchronous operation.
@@ -21,7 +21,7 @@ public final class TaskTracker: Sendable {
     ///              deallocate as soon asynchronous operations and their child tasks
     ///              complete.
     @TaskLocal
-    public static var current: TaskTracker?
+    static var current: TaskTracker?
 
     /// The action to complete when task and all its child tasks complete.
     private let fire: @Sendable () -> Void
@@ -39,7 +39,7 @@ public final class TaskTracker: Sendable {
     ///              Do not keep strong reference of this object, as then object won't
     ///              deallocate as soon asynchronous operations and their child tasks
     ///              complete.
-    public init(onComplete fire: @Sendable @escaping () -> Void) {
+    init(onComplete fire: @Sendable @escaping () -> Void) {
         self.fire = fire
     }
 

Tests/AsyncObjectsTests/TaskOperationTests.swift

@@ -3,7 +3,7 @@ import Dispatch
 @testable import AsyncObjects
 
 class TaskOperationTests: XCTestCase {
-
+    #if canImport(Darwin)
     func testTaskOperation() async throws {
         let queue = OperationQueue()
         let operation = TaskOperation {
@@ -120,6 +120,7 @@ class TaskOperationTests: XCTestCase {
         XCTAssertFalse(operation.isExecuting)
         XCTAssertTrue(operation.isCancelled)
     }
+    #endif
 
     func testTaskOperationAsyncWait() async throws {
         let operation = TaskOperation {

Tests/AsyncObjectsTests/XCTestCase.swift

@@ -12,8 +12,11 @@ extension XCTestCase {
         XCTAssertEqual(
             seconds,
             Int(
-                DispatchTime.now().uptimeNanoseconds - time.uptimeNanoseconds
-            ) / Int(1E9)
+                (Double(
+                    DispatchTime.now().uptimeNanoseconds
+                        - time.uptimeNanoseconds
+                ) / 1E9).rounded(.toNearestOrAwayFromZero)
+            )
         )
     }
 
@@ -41,10 +44,11 @@ extension XCTestCase {
     ) async rethrows where R.Bound == Int {
         let time = DispatchTime.now()
         try await task()
-        let duration =
-            Int(
+        let duration = Int(
+            (Double(
                 DispatchTime.now().uptimeNanoseconds - time.uptimeNanoseconds
-            ) / Int(1E9)
+            ) / 1E9).rounded(.toNearestOrAwayFromZero)
+        )
         XCTAssertTrue(
             range.contains(duration),
             "\(duration) not present in \(range)"