Signal detrending: add validation test

Author: PierreRaybaut

cdl/tests/features/signals/processing_unit_test.py

@@ -256,6 +256,17 @@ def test_signal_integral() -> None:
     check_array_result("Integral", dst.y, exp, atol=0.05)
 
 
+@pytest.mark.validation
+def test_signal_detrending() -> None:
+    """Validation test for the signal detrending processing."""
+    src = get_test_signal("paracetamol.txt")
+    for method in cdl.param.DetrendingParam.methods:
+        p = cdl.param.DetrendingParam.create(method=method)
+        dst = cps.compute_detrending(src, p)
+        exp = sps.detrend(src.data, type=p.method)
+        check_array_result(f"Detrending [method={p.method}]", dst.data, exp)
+
+
 @pytest.mark.validation
 def test_signal_offset_correction() -> None:
     """Validation test for the signal offset correction processing."""