# components(passingTest:) Gets an array of audio components that pass the block method. ``` func components(passingTest testHandler: @escaping (AVAudioUnitComponent, UnsafeMutablePointer) -> Bool) -> [AVAudioUnitComponent] ``` ## Parameters `testHandler` The block to apply to the audio unit components. The block takes two parameters. - comp: A block to test. - stop: A reference to a Boolean value. To stop further processing of the search, the block sets the value to . The stop argument is an out-only argument. Only set this Boolean to within the block. The block returns a Boolean value that indicates whether `comp` passes the test. Returning stops further processing of the audio components. ## Return Value An array of audio components that pass the test. ## Discussion For each audio component the manager finds, the system calls the block method. If the block returns , the method adds `AVAudioComponent` instance to the array. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)