Fix E0606 errors reported by pylint

E0606 -> possibly-used-before-assignement

Note that in case of checktargetrepos actor we are introducing
  https://red.ht/upgrading-rhel9-to-rhel10-main-official-doc
for IPU 9 -> 10. However, this shortened URL must be defined yet later.

repos/system_upgrade/common/actors/checktargetrepos/libraries/checktargetrepos.py

@@ -33,6 +33,9 @@ def process():
         ipu_doc_url = 'https://red.ht/upgrading-rhel7-to-rhel8-main-official-doc'
     elif target_major_version == '9':
         ipu_doc_url = 'https://red.ht/upgrading-rhel8-to-rhel9-main-official-doc'
+    else:
+        ipu_doc_url = 'https://red.ht/upgrading-rhel9-to-rhel10-main-official-doc'
+
 
     rhui_info = next(api.consume(RHUIInfo), None)
 

repos/system_upgrade/common/actors/initramfs/upgradeinitramfsgenerator/tests/unit_test_upgradeinitramfsgenerator.py

@@ -354,6 +354,7 @@ def mock_context_path_exists(path):
 
     module_class = None
     copy_fn = None
+    dst_path = None
     if kind == 'dracut':
         module_class = DracutModule
         copy_fn = upgradeinitramfsgenerator.copy_dracut_modules

repos/system_upgrade/common/actors/scantargetiso/tests/test_scan_target_iso.py

@@ -201,6 +201,7 @@ def mocked_os_listdir(path):
 
     produced_custom_repo_msgs = []
     target_iso_msg = None
+    target_iso = None
     for produced_msg in produced_msgs:
         if isinstance(produced_msg, CustomTargetRepository):
             produced_custom_repo_msgs.append(produced_msg)

repos/system_upgrade/common/actors/selinux/selinuxcontentscanner/tests/unit_test_selinuxcontentscanner.py

@@ -33,6 +33,8 @@ def __call__(self, args, split=True):
                       "port -a -t http_port_t -p udp 81",
                       "fcontext -a -f a -t httpd_sys_content_t '/web(/.*)?'",
                       "fcontext -a -f a -t cgdcbxd_exec_t '/ganesha(/.*)?'"]
+        else:
+            assert False, 'run_mocked: Called unexpected cmd not covered by test: {}'.format(self.args)
 
         return {'stdout': stdout}
 

repos/system_upgrade/common/actors/selinux/selinuxprepare/tests/unit_test_selinuxprepare.py

@@ -24,6 +24,7 @@ def __call__(self, args, split=True):
                     self.removed_modules.add(self.args[idx + 1])
         else:
             self.non_semodule_calls += 1
+            stdout = []
 
         return {'stdout': stdout}
 

repos/system_upgrade/common/libraries/tests/test_grub.py

@@ -40,6 +40,7 @@ def __init__(self, raise_err=False, boot_on_raid=False):
     def __call__(self, args, encoding=None):
         self.called += 1
         self.args = args
+        stdout = ''
         if self.raise_err:
             raise_call_error(args)
 
@@ -50,6 +51,8 @@ def __call__(self, args, encoding=None):
             stdout = BOOT_DEVICE
         elif self.args[:-1] == ['lsblk', '-spnlo', 'name']:
             stdout = self.args[-1][:-1]
+        else:
+            assert False, 'RunMockedError: Called unexpected cmd not covered by test: {}'.format(self.args)
 
         return {'stdout': stdout}
 

repos/system_upgrade/common/libraries/tests/test_mdraid.py

@@ -42,6 +42,8 @@ def __call__(self, args, encoding=None):
             stdout = 'ARRAY /dev/md0 level=raid1 num-devices=2 metadata=1.2 name=localhost.localdomain:0 UUID=c4acea6e:d56e1598:91822e3f:fb26832c\n    devices=/dev/sda1,/dev/sdb1'  # noqa: E501; pylint: disable=line-too-long
         elif self.args == ['mdadm', '--detail', '--verbose', '--brief', NOT_MD_DEVICE]:
             stdout = 'mdadm: /dev/sda does not appear to be an md device'
+        else:
+            assert False, 'RunMockedError: Called unexpected cmd not covered by test: {}'.format(self.args)
 
         return {'stdout': stdout}