diff --git a/tests/node_bosc.rs b/tests/node_bosc.rs
index af51fa8..252b088 100644
--- a/tests/node_bosc.rs
+++ b/tests/node_bosc.rs
@@ -86,3 +86,55 @@ fn check_node_bosc_1() {
     assert_eq!(fft[12].0, 1324);
     assert_eq!(fft[13].0, 1540);
 }
+
+#[test]
+fn check_node_bosc_det() {
+    let (node_conf, mut node_exec) = new_node_engine();
+    let mut matrix = Matrix::new(node_conf, 4, 4);
+
+    let bosc  = NodeId::BOsc(0);
+    let out  = NodeId::Out(0);
+    matrix.place(0, 0, Cell::empty(bosc)
+                       .out(None, None, bosc.out("sig")));
+    matrix.place(0, 1, Cell::empty(out)
+                       .input(out.inp("ch1"), None, None)
+                       .out(None, None, None));
+    pset_s(&mut matrix, bosc, "wtype", 3); // Pulse
+    pset_n(&mut matrix, bosc, "pw", 0.0);  // Pulse width no mod
+    pset_d(&mut matrix, bosc, "freq", 220.0);
+    matrix.sync().unwrap();
+
+    let fft = run_and_get_fft4096_now(&mut node_exec, 120);
+//    println!("TO {:?}", fft);
+    assert_eq!(fft[0].0, 205);
+    assert_eq!(fft[1].0, 215);
+    assert_eq!(fft[2].0, 226);
+    assert_eq!(fft[3].0, 237);
+    assert_eq!(fft[4].0, 646);
+    assert_eq!(fft[5].0, 657);
+    assert_eq!(fft[6].0, 668);
+    assert_eq!(fft[7].0, 1098);
+    assert_eq!(fft[8].0, 1109);
+    assert_eq!(fft[9].0, 1540);
+    assert_eq!(fft[10].0, 1981);
+
+    pset_d_wait(&mut matrix, &mut node_exec, bosc, "freq", 1000.0);
+    let fft = run_and_get_fft4096_now(&mut node_exec, 200);
+//    println!("TO {:?}", fft);
+    assert_eq!(fft[0].0, 991);
+    assert_eq!(fft[1].0, 1001);
+    assert_eq!(fft[2].0, 1012);
+    assert_eq!(fft[3].0, 2993);
+    assert_eq!(fft[4].0, 3004);
+    assert_eq!(fft[5].0, 4996);
+
+    pset_n_wait(&mut matrix, &mut node_exec, bosc, "det", 0.1);
+    let fft = run_and_get_fft4096_now(&mut node_exec, 200);
+//    println!("TO {:?}", fft);
+    assert_eq!(fft[0].0, 1992);
+    assert_eq!(fft[1].0, 2003);
+    assert_eq!(fft[2].0, 2013);
+    assert_eq!(fft[3].0, 5997);
+    assert_eq!(fft[4].0, 6008);
+    assert_eq!(fft[5].0, 10002);
+}