[PATCH v4 10/10] iotests/300: Clean up pylint and mypy complaints

[Max Reitz <mreitz@redhat.com>]

And consequentially drop it from 297's skip list.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/297 |  2 +-
 tests/qemu-iotests/300 | 18 +++++++++++++++---
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
index d2d9292839..ce7f85cfe0 100755
--- a/tests/qemu-iotests/297
+++ b/tests/qemu-iotests/297
@@ -33,7 +33,7 @@ SKIP_FILES = (
     '218', '219', '222', '224', '228', '234', '235', '236', '237', '238',
     '240', '242', '245', '246', '248', '255', '256', '257', '258', '260',
     '262', '264', '266', '274', '277', '280', '281', '295', '296', '298',
-    '299', '300', '302', '303', '304', '307',
+    '299', '302', '303', '304', '307',
     'nbd-fault-injector.py', 'qcow2.py', 'qcow2_format.py', 'qed.py'
 )
 
diff --git a/tests/qemu-iotests/300 b/tests/qemu-iotests/300
index b864a21d5e..4115f90578 100755
--- a/tests/qemu-iotests/300
+++ b/tests/qemu-iotests/300
@@ -22,7 +22,11 @@ import os
 import random
 import re
 from typing import Dict, List, Optional, Union
+
 import iotests
+
+# Import qemu after iotests.py has amended sys.path
+# pylint: disable=wrong-import-order
 import qemu
 
 BlockBitmapMapping = List[Dict[str, Union[str, List[Dict[str, str]]]]]
@@ -110,10 +114,14 @@ class TestDirtyBitmapMigration(iotests.QMPTestCase):
         If @msg is None, check that there has not been any error.
         """
         self.vm_b.shutdown()
+
+        log = self.vm_b.get_log()
+        assert log is not None  # Loaded after shutdown
+
         if msg is None:
-            self.assertNotIn('qemu-system-', self.vm_b.get_log())
+            self.assertNotIn('qemu-system-', log)
         else:
-            self.assertIn(msg, self.vm_b.get_log())
+            self.assertIn(msg, log)
 
     @staticmethod
     def mapping(node_name: str, node_alias: str,
@@ -445,9 +453,13 @@ class TestBlockBitmapMappingErrors(TestDirtyBitmapMigration):
 
         # Check for the error in the source's log
         self.vm_a.shutdown()
+
+        log = self.vm_a.get_log()
+        assert log is not None  # Loaded after shutdown
+
         self.assertIn(f"Cannot migrate bitmap '{name}' on node "
                       f"'{self.src_node_name}': Name is longer than 255 bytes",
-                      self.vm_a.get_log())
+                      log)
 
         # Expect abnormal shutdown of the destination VM because of
         # the failed migration
-- 
2.29.2