Merge pull request #9 from ChimeHQ/feature/queue-add-async

NSOperationQueue addAsyncOperation

OperationPlus/AsyncBlockOperation.swift

@@ -9,9 +9,11 @@
 import Foundation
 
 public class AsyncBlockOperation: AsyncOperation {
-    private let block: (@escaping () -> Void) -> Void
+    public typealias CompletionHandler = (@escaping () -> Void) -> Void
 
-    public init(block: @escaping (@escaping () -> Void) -> Void) {
+    private let block: CompletionHandler
+
+    public init(block: @escaping CompletionHandler) {
         self.block = block
     }
 

OperationPlus/Extensions/OperationQueue+Enqueuing.swift

@@ -18,4 +18,8 @@ extension OperationQueue {
     public func addOperations(_ ops: [Operation]) {
         addOperations(ops, waitUntilFinished: false)
     }
+
+    public func addAsyncOperation(block: @escaping AsyncBlockOperation.CompletionHandler) {
+        addOperation(AsyncBlockOperation(block: block))
+    }
 }

OperationPlusTests/OperationQueueTests.swift

@@ -62,4 +62,19 @@ class OperationQueueTests: XCTestCase {
 
         wait(for: [expectation], timeout: 1.0)
     }
+
+    func testAddAsyncBlock() {
+        let queue = OperationQueue.serialQueue()
+
+        let blockExpecation = XCTestExpectation(description: "Block Expectation")
+
+        queue.addAsyncOperation { (completionHandler) in
+            blockExpecation.fulfill()
+            completionHandler()
+        }
+
+        let nextOpExpectation = OperationExpectation(operation: Operation(), queue: queue)
+
+        wait(for: [blockExpecation, nextOpExpectation], timeout: 1.0, enforceOrder: true)
+    }
 }

README.md

@@ -189,6 +189,17 @@ queue.currentOperationsFinished {
 }
 ```
 
+Convenient inline functions:
+
+```swift
+queue.addAsyncOperation { (completionHandler) in
+    DispatchQueue.global().async {
+        // do some async work
+        completionHandler()
+    }
+}
+```
+
 ### XCTest Support
 
 **OperationTestingPlus** is an optional micro-framework to help make your XCTest-based tests a little nicer. When using Carthage, it is built as a static framework to help ease integration with your testing targets.