Add test cases for WebWorkerDedicatedExecutor

Author: kateinoigakukun

Sources/JavaScriptEventLoopTestSupport/JavaScriptEventLoopTestSupport.swift

@@ -27,6 +27,11 @@ import JavaScriptEventLoop
 func swift_javascriptkit_activate_js_executor_impl() {
     MainActor.assumeIsolated {
         JavaScriptEventLoop.installGlobalExecutor()
+        #if canImport(wasi_pthread) && compiler(>=6.1) && _runtime(_multithreaded)
+        if #available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *) {
+            WebWorkerTaskExecutor.installGlobalExecutor()
+        }
+        #endif
     }
 }
 

Tests/JavaScriptEventLoopTests/WebWorkerDedicatedExecutorTests.swift

@@ -0,0 +1,32 @@
+import XCTest
+@testable import JavaScriptEventLoop
+
+final class WebWorkerDedicatedExecutorTests: XCTestCase {
+    actor MyActor {
+        let executor: WebWorkerDedicatedExecutor
+        nonisolated var unownedExecutor: UnownedSerialExecutor {
+            self.executor.asUnownedSerialExecutor()
+        }
+
+        init(executor: WebWorkerDedicatedExecutor) {
+            self.executor = executor
+            XCTAssertTrue(isMainThread())
+        }
+
+        func onWorkerThread() async {
+            XCTAssertFalse(isMainThread())
+            await Task.detached {}.value
+            // Should keep on the thread after back from the other isolation domain
+            XCTAssertFalse(isMainThread())
+        }
+    }
+
+    func testEnqueue() async throws {
+        let executor = try await WebWorkerDedicatedExecutor()
+        defer { executor.terminate() }
+        let actor = MyActor(executor: executor)
+        XCTAssertTrue(isMainThread())
+        await actor.onWorkerThread()
+        XCTAssertTrue(isMainThread())
+    }
+}

Tests/JavaScriptEventLoopTests/WebWorkerTaskExecutorTests.swift

@@ -23,10 +23,6 @@ func pthread_mutex_lock(_ mutex: UnsafeMutablePointer<pthread_mutex_t>) -> Int32
 #endif
 
 final class WebWorkerTaskExecutorTests: XCTestCase {
-    override func setUp() async {
-        WebWorkerTaskExecutor.installGlobalExecutor()
-    }
-
     func testTaskRunOnMainThread() async throws {
         let executor = try await WebWorkerTaskExecutor(numberOfThreads: 1)