asynchronous unit test

AsyncTests.swift

import UIKit
import XCTest

class AsyncTests: XCTestCase {
    
    override func setUp() {
        super.setUp()
        // Put setup code here. This method is called before the invocation of each test method in the class.
    }
    
    override func tearDown() {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }
    
    func testExample() {
        // This is an example of a functional test case.
        XCTAssert(true, "Pass")
    }
    
    func testURLConnection () {
        
        let exp = self.expectationWithDescription("test NSURLConnection")
        
        let optionalURL:NSURL? = NSURL(string: "http://noli.li/")
        
        if let url = optionalURL{
        let request = NSURLRequest(URL: url)
            NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler: { (response:NSURLResponse!, data:NSData!, error:NSError!) -> Void in
                println(response)
                println(data)
                exp.fulfill()
            })
        }
        self.waitForExpectationsWithTimeout(10.0, handler: { (error:NSError!) -> Void in
            
        })
    }
    
    func testPerformanceExample() {
        // This is an example of a performance test case.
        self.measureBlock() {
            // Put the code you want to measure the time of here.
        }
    }
    
}