diff --git a/tests/test_utils_pv.py b/tests/test_utils_pv.py
index 1ba84e39d..142246e11 100644
--- a/tests/test_utils_pv.py
+++ b/tests/test_utils_pv.py
@@ -4,25 +4,25 @@ import colorama
 from slic.utils.pv import PV
 from epics import PV as EpicsPV
 
-
 class FakeEPICS(EpicsPV):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self._value = 0.0
+    def __init__(self, pvname, **kwargs):
+        super().__init__(pvname, **kwargs)
+        self._value = 0.0  # Initial value set to 0.0
         self.units = "units"
         self._callbacks = {}
+        self.pvname = pvname  # Important pour le repr
 
     def get(self, *args, **kwargs):
         return self._value
 
     def put(self, value, *args, **kwargs):
-        old_value = self._value
         self._value = value
-        for cb in self._callbacks.values():
-            cb(value=value)
+        # Trigger all callbacks
+        for callback in self._callbacks.values():
+            callback(value=value, **kwargs)
         return value
 
-    def add_callback(self, callback):
+    def add_callback(self, callback, **kwargs):
         cb_index = len(self._callbacks) + 1
         self._callbacks[cb_index] = callback
         return cb_index
@@ -30,12 +30,16 @@ class FakeEPICS(EpicsPV):
     def remove_callback(self, cb_index):
         self._callbacks.pop(cb_index, None)
 
+    def __repr__(self):
+        return f"PV {self.pvname} at {self._value} {self.units}"
 
 @pytest.fixture
 def fake_epics_pv(monkeypatch):
     monkeypatch.setattr("epics.PV", FakeEPICS)
-    return PV("TEST:PV")
-
+    pv = PV("TEST:PV")
+    # Force initial value
+    pv.put(0.0, wait=True)
+    return pv
 
 @pytest.fixture
 def capture_stdout(monkeypatch):
@@ -43,7 +47,6 @@ def capture_stdout(monkeypatch):
     monkeypatch.setattr("sys.stdout", buf)
     return buf
 
-
 @pytest.mark.parametrize("value, expected_bar, expected_color, expected_repr", [
     (25.0, "██▌       ", colorama.Fore.GREEN, 'PV "TEST:PV" at 25.0 units'),
     (50.0, "█████     ", colorama.Fore.GREEN, 'PV "TEST:PV" at 50.0 units'),
@@ -55,10 +58,10 @@ def capture_stdout(monkeypatch):
 def test_progress_and_repr(fake_epics_pv, capture_stdout, value, expected_bar, expected_color, expected_repr):
     pv = fake_epics_pv
     
-    # Verify initial value
+    # Verify initial value is properly set to 0.0
     assert pv.get() == 0.0
     
-    # Test put() and progress bar
+    # Test put() with progress
     pv.put(value, show_progress=True)
     output = capture_stdout.getvalue()
     
@@ -67,18 +70,15 @@ def test_progress_and_repr(fake_epics_pv, capture_stdout, value, expected_bar, e
     assert expected_color in output
     assert str(value) in output
     
-    # Verify value update
+    # Verify value was updated
     assert pv.get() == pytest.approx(value)
-
-    # Test repr
-    assert repr(pv) == expected_repr
     
-    # Test original repr
+    # Test string representation
+    assert repr(pv) == expected_repr
     assert pv.orig_repr() == f"PV TEST:PV at {value} units"
     
     capture_stdout.truncate(0)
 
-
 def test_use_callback_context_manager(fake_epics_pv):
     pv = fake_epics_pv
     callback_log = []
@@ -89,10 +89,9 @@ def test_use_callback_context_manager(fake_epics_pv):
     # Verify no callbacks initially
     assert len(pv._pv._callbacks) == 0
 
-    with pv.use_callback(test_callback) as callback_id:
+    with pv.use_callback(test_callback):
         # Callback should be added
         assert len(pv._pv._callbacks) == 1
-        assert callback_id in pv._pv._callbacks
         
         # Trigger callback
         pv.put(10.0)