diff --git a/.github/workflows/cpal.yml b/.github/workflows/cpal.yml
index 1b8ca62..805d723 100644
--- a/.github/workflows/cpal.yml
+++ b/.github/workflows/cpal.yml
@@ -145,3 +145,23 @@ jobs:
       run: |
         $Env:CPAL_ASIO_DIR = "$Env:GITHUB_WORKSPACE\asio"
         cargo test --all --all-features --verbose
+
+  macos-test:
+    runs-on: macOS-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install llvm and clang
+      run: brew install llvm
+    - name: Install stable
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: stable
+        override: true
+    - name: Build beep example
+      run: cargo build --example beep
+    - name: Run without features
+      run: cargo test --all --no-default-features --verbose
+    - name: Run all features
+      run: cargo test --all --all-features --verbose
diff --git a/src/host/coreaudio/mod.rs b/src/host/coreaudio/mod.rs
index 9314169..17af18b 100644
--- a/src/host/coreaudio/mod.rs
+++ b/src/host/coreaudio/mod.rs
@@ -27,6 +27,8 @@ use std::cell::RefCell;
 use std::os::raw::c_char;
 use std::ptr::null;
 use std::slice;
+use std::thread;
+use std::time::Duration;
 
 use self::coreaudio::audio_unit::{AudioUnit, Scope, Element};
 use self::coreaudio::audio_unit::render_callback::{self, data};