fix 1; broken withLock

Sources/Lock/AsyncLock.swift

@@ -57,6 +57,8 @@ public final class AsyncLock {
 		isolation: isolated (any Actor)? = #isolation,
 		_ block: @isolated(any) () async throws -> T
 	) async rethrows -> T {
+		await lock()
+
 		do {
 			let value = try await block()
 

Tests/LockTests/LockTests.swift

@@ -5,15 +5,15 @@ actor ReentrantActor {
 	var value = 42
 	let lock = AsyncLock()
 
-	//	func doThing() async {
-	//		await lock.withLock {
-	//			try! #require(self.value == 42)
-	//			self.value = 0
-	//			try! await Task.sleep(nanoseconds: 1_000_000)
-	//			try! #require(self.value == 0)
-	//			self.value = 42
-	//		}
-	//	}
+	func doThingWithLock() async {
+		await lock.withLock {
+			try! #require(self.value == 42)
+			self.value = 0
+			try! await Task.sleep(nanoseconds: 1_000_000)
+			try! #require(self.value == 0)
+			self.value = 42
+		}
+	}
 
 	func doThing() async {
 		await lock.lock()
@@ -53,4 +53,22 @@ struct LockTests {
 			await task.value
 		}
 	}
+
+	@Test
+	func serializesWithLock() async {
+		let actor = ReentrantActor()
+		var tasks = [Task<Void, Never>]()
+
+		for _ in 0..<1000 {
+			let task = Task {
+				await actor.doThingWithLock()
+			}
+
+			tasks.append(task)
+		}
+
+		for task in tasks {
+			await task.value
+		}
+	}
 }

Tests/LockTests/RecursiveLockTests.swift

@@ -36,7 +36,7 @@ struct RecursiveLockTests {
 	}
 
 	@Test
-	func serializes() async {
+	func serializesWithRecursiveLock() async {
 		let actor = RecursiveReentrantActor()
 		var tasks = [Task<Void, Never>]()