assert module state is not set

Opentrons · Jan 2, 2025 · 33c6dc9 · 33c6dc9
1 parent b2569ac
commit 33c6dc9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/api/src/opentrons/protocol_engine/state/update_types.py b/api/src/opentrons/protocol_engine/state/update_types.py
@@ -603,6 +603,7 @@ def set_fluid_empty(self: Self, pipette_id: str) -> Self:
 
     def set_absorbance_reader_lid(self: Self, module_id: str, is_lid_on: bool) -> Self:
         """Update an absorbance reader's lid location. See `AbsorbanceReaderLidUpdate`."""
+        assert self.absorbance_reader_state_update == NO_CHANGE
         self.absorbance_reader_state_update = AbsorbanceReaderStateUpdate(
             module_id=module_id,
             absorbance_reader_lid=AbsorbanceReaderLidUpdate(is_lid_on=is_lid_on),
@@ -613,6 +614,7 @@ def set_absorbance_reader_data(
         self, module_id: str, read_result: typing.Dict[int, typing.Dict[str, float]]
     ) -> Self:
         """Update an absorbance reader's read data. See `AbsorbanceReaderReadDataUpdate`."""
+        assert self.absorbance_reader_state_update == NO_CHANGE
         self.absorbance_reader_state_update = AbsorbanceReaderStateUpdate(
             module_id=module_id,
             absorbance_reader_data=AbsorbanceReaderDataUpdate(read_result=read_result),
@@ -627,6 +629,7 @@ def initialize_absorbance_reader(
         reference_wave_length: typing.Optional[int],
     ) -> Self:
         """Initialize absorbance reader."""
+        assert self.absorbance_reader_state_update == NO_CHANGE
         self.absorbance_reader_state_update = AbsorbanceReaderStateUpdate(
             module_id=module_id,
             initialize_absorbance_reader_update=AbsorbanceReaderInitializeUpdate(