fix graph and white background added

python_app/tests/test_processor_history.py

@@ -209,6 +209,44 @@ class FedBackSweepsTest(_ProcessorTestCase):
         self._live_writer.write(self._live)
         self.assertEqual(self._published_ids(_SWEEPS), expected)
 
+    def test_sweep_failing_to_recompute_does_not_stall_new_input(self) -> None:
+        self._live.processor_mode = "gpr"
+        self._live.gpr_input_positions = self._live.gpr_output_positions = [0]
+        self._live.gpr_background_subtract_enabled = False
+        self._live.tx_geometry = [{"output_pos": 0, "x_m": 0.0, "y_m": 0.0, "z_m": 0.0}]
+        self._live.rx_geometry = [{"input_pos": 0, "x_m": 0.0, "y_m": 0.0, "z_m": 0.0}]
+        self._live_writer.write(self._live)
+        start = time.monotonic_ns()
+        self._push([_sweep(1, start)])
+        self._result_for_revision(0, 1)
+        failing = _sweep(2, start + 1_000_000)
+        failing.traces[0].capture_end_ns = failing.traces[0].capture_start_ns  # GPR rejects an empty trace window
+        self._push([failing])
+        deadline = time.monotonic() + _TIMEOUT_S
+        while self._input._read_u64(32) != self._input._read_u64(24):  # now the newest retained sweep
+            self.assertLess(time.monotonic(), deadline, self._stderr_path.read_text())
+            time.sleep(.01)
+        # Both arrive while the processor is stopped past its 100 ms live-file check, so on
+        # resuming it recomputes that failing sweep before it takes the next one.
+        self._processor.send_signal(signal.SIGSTOP)
+        os.waitpid(self._processor.pid, os.WUNTRACED)
+        try:
+            self._live.settings_revision = 1
+            self._live_writer.write(self._live)
+            self._push([_sweep(3, start + 2_000_000)])
+            time.sleep(.2)
+        finally:
+            self._processor.send_signal(signal.SIGCONT)
+        self._result_for_revision(1, 3)
+
+    def test_bscan_band_without_two_sweep_points_gives_an_empty_profile(self) -> None:
+        self._live.bscan_start_freq_mhz, self._live.bscan_stop_freq_mhz = 7000.0, 8000.0  # sweep is 1-6 GHz
+        self._live.settings_revision = 1
+        self._live_writer.write(self._live)
+        self._push([_sweep(1, time.monotonic_ns())])
+        payload = self._result_for_revision(1, 1).blocks[0].payloads[0]
+        self.assertEqual((payload.processing_name, payload.frequency_hz.size, payload.trace.size), ("bscan", 0, 0))
+
     def test_live_geometry_recomputes_retained_gpr_without_restarting(self) -> None:
         self._live.processor_mode = "gpr"
         self._live.gpr_input_positions = [0]