 
 class Tests: XCTestCase {
     
-    var testImages: [CGImage]!
+    var testImage: CGImage!
     
     override func setUp() {
         super.setUp()

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

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