Update GPR and SAR3D processing

python_app/tests/test_processor_history.py

@@ -130,6 +130,27 @@ class _ProcessorTestCase(unittest.TestCase):
 
 
 class FedBackSweepsTest(_ProcessorTestCase):
+    def test_mean_history_is_not_limited_by_transport_ring_capacity(self) -> None:
+        self._live.processor_mode = "gpr"
+        self._live.gpr_input_positions = self._live.gpr_output_positions = [0]
+        self._live.gpr_background_subtract_enabled = True
+        self._live.gpr_background_mean_count = 60
+        self._live.gpr_min_depth_m, self._live.gpr_max_depth_m = .1, 1.5
+        self._live.gpr_bp_ground_depth_m = 0.
+        self._live_writer.write(self._live)
+        start = time.monotonic_ns()
+        for cid in range(1, 61):
+            sweep = _sweep(cid, start + cid*1_000_000)
+            sweep.traces[0].s21 *= (-1.)**np.arange(len(sweep.traces[0].s21))
+            self._push([sweep])
+            self._result_for_revision(0, cid)
+        current = _sweep(61, start + 61_000_000)
+        current.traces[0].s21[:] = 30.5 * (-1.)**np.arange(len(current.traces[0].s21))
+        self._push([current])
+        result = self._result_for_revision(0, 61)
+        image = next(payload.image for payload in result.collection_payloads if payload.processing_name == "gpr_accumulator")
+        self.assertFalse(np.any(image))  # Exact cancellation of the 60 preceding spectra (1…60).
+
     def test_remove_targets_exact_sweep_with_reused_ids_and_preserves_missing_targets(self) -> None:
         start_ns = time.monotonic_ns()
         sweeps = [_sweep(cid, start_ns + index * 1_000_000)