Test/add xfel calibrate cli tests

Description

This MR adds in some basic tests for the CLI in xfel_calibrate. Done since I want to edit the CLI a bit for SQS Moonshot but the CLI is kinda spaghetti so I'm worried about breaking things and not realising it.

How Has This Been Tested?

Locally, tested by breaking code and checking that the tests fail.

Relevant Documents (optional)

Part of SQS Moonshot, see:

• https://git.xfel.eu/gitlab/moonshot/sqs/issues/13
• https://git.xfel.eu/gitlab/moonshot/sqs/issues/19

Types of changes

• Test (additional or refactored tests)

Checklist:

• My code follows the code style of this project.

Reviewers

@calibration

tests/test_calibrate.py

@@ -4,32 +4,47 @@ from xfel_calibrate.calibrate import balance_sequences
 
 
 def test_balance_sequences():
-
-    ret = balance_sequences(in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
-                            run=9992, sequences=[0, 2, 5, 10, 20, 50, 100],
-                            sequences_per_node=1, karabo_da=["all"],
-                            max_nodes=8)
+    ret = balance_sequences(
+        in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
+        run=9992,
+        sequences=[0, 2, 5, 10, 20, 50, 100],
+        sequences_per_node=1,
+        karabo_da=["all"],
+        max_nodes=8,
+    )
 
     expected = [[0], [2]]
     assert expected == ret
 
-    ret = balance_sequences(in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
-                            run=9992, sequences=[-1],
-                            sequences_per_node=1, karabo_da=["JNGFR01"],
-                            max_nodes=3)
+    ret = balance_sequences(
+        in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
+        run=9992,
+        sequences=[-1],
+        sequences_per_node=1,
+        karabo_da=["JNGFR01"],
+        max_nodes=3,
+    )
     expected = []
     assert expected == ret
 
     with pytest.raises(ValueError) as e:
-        balance_sequences(in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
-                          run=9992, sequences=[1991, 2021],
-                          sequences_per_node=1, karabo_da=["all"],
-                          max_nodes=3)
-        assert 'Selected sequences [1991, 2021]]' in e.value()
+        balance_sequences(
+            in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
+            run=9992,
+            sequences=[1991, 2021],
+            sequences_per_node=1,
+            karabo_da=["all"],
+            max_nodes=3,
+        )
+        assert "Selected sequences [1991, 2021]]" in e.value()
 
     with pytest.raises(ValueError) as e:
-        balance_sequences(in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
-                          run=9992, sequences=[1991, 2021],
-                          sequences_per_node=1, karabo_da=-1,
-                          max_nodes=3)
-        assert 'karabo_da as a string or list' in e.value()
+        balance_sequences(
+            in_folder="/gpfs/exfel/exp/CALLAB/202031/p900113/raw",  # noqa
+            run=9992,
+            sequences=[1991, 2021],
+            sequences_per_node=1,
+            karabo_da=-1,
+            max_nodes=3,
+        )
+        assert "karabo_da as a string or list" in e.value()