spectrophotometry methods of cytation call set_plate (#650)

Author: rickwierenga

pylabrobot/plate_reading/biotek_backend.py

@@ -618,6 +618,8 @@ async def read_absorbance(self, plate: Plate, wavelength: int) -> List[List[floa
     if not 230 <= wavelength <= 999:
       raise ValueError("Wavelength must be between 230 and 999")
 
+    await self.set_plate(plate)
+
     wavelength_str = str(wavelength).zfill(4)
     cmd = f"00470101010812000120010000110010000010600008{wavelength_str}1"
     checksum = str(sum(cmd.encode()) % 100).zfill(2)
@@ -636,6 +638,8 @@ async def read_luminescence(self, plate: Plate, focal_height: float) -> List[Lis
     if not 4.5 <= focal_height <= 13.88:
       raise ValueError("Focal height must be between 4.5 and 13.88")
 
+    await self.set_plate(plate)
+
     cmd = f"3{14220 + int(1000*focal_height)}\x03"
     await self.send_command("t", cmd)
 
@@ -663,6 +667,8 @@ async def read_fluorescence(
     if not 250 <= emission_wavelength <= 700:
       raise ValueError("Emission wavelength must be between 250 and 700")
 
+    await self.set_plate(plate)
+
     cmd = f"{614220 + int(1000*focal_height)}\x03"
     await self.send_command("t", cmd)
 

pylabrobot/plate_reading/biotek_tests.py

@@ -70,6 +70,8 @@ async def test_get_current_temperature(self):
   async def test_read_absorbance(self):
     self.backend.io.read.side_effect = _byte_iter(
       "\x06"
+      + "\x03"
+      + "\x06"
       + "0350000000000000010000000000490300000\x03"
       + "\x06"
       + "0000\x03"
@@ -94,10 +96,9 @@ async def test_read_absorbance(self):
       )
     )
 
-    self.backend._plate = CellVis_96_wellplate_350uL_Fb(
-      name="plate"
-    )  # lint: disable=protected-access
-    resp = await self.backend.read_absorbance(plate=self.plate, wavelength=580)
+    resp = await self.backend.read_absorbance(
+      plate=CellVis_96_wellplate_350uL_Fb(name="plate"), wavelength=580
+    )
 
     self.backend.io.write.assert_any_call(b"D")
     self.backend.io.write.assert_any_call(
@@ -184,6 +185,8 @@ async def test_read_absorbance(self):
   async def test_read_fluorescence(self):
     self.backend.io.read.side_effect = _byte_iter(
       "\x06"
+      + "\x03"
+      + "\x06"
       + "0000\x03"
       + "\x06"
       + "0350000000000000010000000000490300000\x03"
@@ -209,11 +212,8 @@ async def test_read_fluorescence(self):
       )
     )
 
-    self.backend._plate = CellVis_96_wellplate_350uL_Fb(
-      name="plate"
-    )  # lint: disable=protected-access
     resp = await self.backend.read_fluorescence(
-      plate=self.plate,
+      plate=CellVis_96_wellplate_350uL_Fb(name="plate"),
       excitation_wavelength=485,
       emission_wavelength=528,
       focal_height=7.5,