Fix: update signal detrending test to use method values

Author: PierreRaybaut

cdl/tests/features/signals/processing_unit_test.py

@@ -260,8 +260,8 @@ def test_signal_integral() -> None:
 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)
+    for method_value, _method_name in cdl.param.DetrendingParam.methods:
+        p = cdl.param.DetrendingParam.create(method=method_value)
         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)