         XCTAssertNotNil(response?.resumeData)
         XCTAssertNotNil(response?.error)
 
-        XCTAssertNotNil(download.resumeData, "resume data should not be nil")
+        XCTAssertNotNil(download.resumeData)
 
         if let responseResumeData = response?.resumeData, let resumeData = download.resumeData {
             XCTAssertEqual(responseResumeData, resumeData)


        // When
        let download = Alamofire.download(urlString)
        download.downloadProgress { _, _, _ in
            download.cancel()
        }
        download.responseJSON { resp in
            response = resp


        // When
        let download = Alamofire.download(urlString)
        download.downloadProgress { _, totalBytesReceived, _ in
            if totalBytesReceived > 10_000 { download.cancel() }
        }
        download.response { resp in
            response = resp
