(fixup) Slightly nicer testing code

tests/test_webservice.py

@@ -191,9 +191,9 @@ async def test_get_slurm_partition(proposal_number,
 async def test_get_slurm_nice(fake_process, cycle, num_jobs, expected_result):
     fake_process.register(
         ['squeue', '-h', '-o', '%.20j', '-p', 'exfel', '--me'],
-        stdout=b'\n'.join(
-            [f'correct_SPB_{i}'.encode('ascii') for i in range(num_jobs)] +
-            [f'correct_FXE_{i}'.encode('ascii') for i in range(num_jobs*2)]),
+        stdout='\n'.join(
+            [f'correct_SPB_{i}' for i in range(num_jobs)] +
+            [f'correct_FXE_{i}' for i in range(num_jobs*2)]).encode('ascii'),
         returncode=0)
 
     ret = await get_slurm_nice(