Fix RollingDetectorView.clear_counts

startinew.clear_countsV

src/ess/reduce/live/raw.py

@@ -243,7 +243,15 @@ def __init__(
         self._current = 0
         self._history: sc.DataArray | None = None
         self._cache: sc.DataArray | None = None
+        self.clear_counts()
 
+    def clear_counts(self) -> None:
+        """
+        Clear counts.
+
+        Overrides Detector.clear_counts, to properly clear sliding window history and
+        cache.
+        """
         counts = sc.zeros_like(self.data)
         if self._projection is not None:
             counts = self._projection(counts)

tests/live/raw_test.py

@@ -107,6 +107,23 @@ def test_RollingDetectorView_partial_window() -> None:
     assert det.get(3).sum().value == 4
 
 
+def test_RollingDetectorView_clear_counts() -> None:
+    detector_number = sc.array(dims=['pixel'], values=[1, 2, 3], unit=None)
+    det = raw.RollingDetectorView(detector_number=detector_number, window=3)
+    det.add_counts([1, 2, 3, 2])
+    assert det.get(0).sum().value == 0
+    assert det.get(1).sum().value == 4
+    assert det.get(2).sum().value == 4
+    assert det.get(3).sum().value == 4
+    assert det.get().sum().value == 4
+    det.clear_counts()
+    assert det.get(0).sum().value == 0
+    assert det.get(1).sum().value == 0
+    assert det.get(2).sum().value == 0
+    assert det.get(3).sum().value == 0
+    assert det.get().sum().value == 0
+
+
 def test_RollingDetectorView_raises_if_subwindow_exceeds_window() -> None:
     detector_number = sc.array(dims=['pixel'], values=[1, 2, 3], unit=None)
     det = raw.RollingDetectorView(detector_number=detector_number, window=3)