         let fileURL = bundle.urlForImageResource("Stadium Arcadium")!
         let img = NSImage(contentsOf: fileURL)!
         let cgimg = img.cgImage(forProposedRect: nil, context: nil, hints: nil)!
-        testImages = [cgimg]
+        testImage = cgimg
     }
     
     override func tearDown() {

    }
    
    func testColorArtworkAnalyzing() {
        testImages.forEach() { image in
            let ca = CAColorArtwork(image: image)
            ca.analyze()
            XCTAssertNotNil(ca.backgroundColor)
        }


class Tests: XCTestCase {
    
    var testImage: CGImage!
    
    override func setUp() {
        super.setUp()
