(#820) Add test confirming the zoom level is set correctly on setup OAV

src/artemis/device_setup_plans/setup_oav.py

@@ -82,9 +82,6 @@ def pre_centring_setup_oav(oav: OAV, parameters: OAVParameters):
         parameters.detection_script_filename,
     )
 
-    # Connect MXSC output to MJPG input for debugging
-    yield from bps.abs_set(oav.snapshot.input_plugin, "OAV.MXSC")
-
     zoom_level_str = f"{float(parameters.zoom)}x"
     if zoom_level_str not in oav.zoom_controller.allowed_zoom_levels:
         raise OAVError_ZoomLevelNotFound(
@@ -96,6 +93,10 @@ def pre_centring_setup_oav(oav: OAV, parameters: OAVParameters):
         zoom_level_str,
         wait=True,
     )
+
+    # Connect MXSC output to MJPG input for debugging
+    yield from bps.abs_set(oav.snapshot.input_plugin, "OAV.MXSC")
+
     yield from bps.wait()
 
     """