 
     func AKTestNoEffect() {
         if let existingOutput = output {
-            AudioKit.test(node: existingOutput, duration: duration, afterStart: afterStart)
+            try! AudioKit.test(node: existingOutput, duration: duration, afterStart: afterStart)
         }
         let  localMD5 = MD5
         XCTAssertTrue(localMD5 == sineOscillatorMD5, localMD5)


    func AKTestMD5Not(_ md5: String) {
        if let existingOutput = output {
            AudioKit.test(node: existingOutput, duration: duration, afterStart: afterStart)
        }
        let  localMD5 = MD5
        XCTAssertFalse(md5 == localMD5, localMD5)

    override func tearDown() {
        // This method is called after the invocation of each test method in the class.
        AudioKit.disconnectAllInputs()
        try! AudioKit.stop()
        super.tearDown()
    }

