Testcase module typed and formatted.

- Type hints for testcase module are completed.
- Type comments (to be compatible with Python 2) have been added to
  other parts of slapos.core only when necessary to achieve full type
  checking in the testcase module, with Pyright in strict mode.
- Docstrings added/completed for the testcase module.
- Source is formatted with ruff.

pyproject.toml

+[tool.ruff]
+line-length = 80
+indent-width = 2
\ No newline at end of file

slapos/grid/utils.py

@@ -211,6 +211,7 @@ class SlapPopen(subprocess.Popen):
 
 
 def md5digest(url):
+  # type: (str) -> str
   return hashlib.md5(url.encode('utf-8')).hexdigest()
 
 

slapos/slap/slap.py

@@ -45,6 +45,11 @@ import warnings
 import json
 import six
 
+try:
+  from typing import Mapping, Sequence
+except ImportError: # XXX to be removed once we depend on typing
+  pass
+
 from .exception import ResourceNotReady, ServerError, NotFoundError, \
           ConnectionError
 from .hateoas import SlapHateoasNavigator, ConnectionHelper
@@ -178,6 +183,7 @@ class SoftwareRelease(SlapDocument):
       return self._computer_guid
 
   def getURI(self):
+    # type: (...) -> str
     if not self._software_release:
       raise NameError('software_release has not been defined.')
     else:
@@ -384,6 +390,7 @@ class Computer(SlapDocument):
 
   @_syncComputerInformation
   def getComputerPartitionList(self):
+    # type: (...) -> Sequence[ComputerPartition]
     for computer_partition in self._computer_partition_list:
       computer_partition._connection_helper = self._connection_helper
       computer_partition._hateoas_navigator = self._hateoas_navigator
@@ -596,6 +603,7 @@ class ComputerPartition(SlapRequester):
     return software_instance
 
   def getId(self):
+    # type: (...) -> str
     if not getattr(self, '_partition_id', None):
       raise ResourceNotReady()
     return self._partition_id
@@ -629,9 +637,11 @@ class ComputerPartition(SlapRequester):
     return software_type
 
   def getInstanceParameterDict(self):
+    # type: (...) -> Mapping[str, object]
     return getattr(self, '_parameter_dict', None) or {}
 
   def getConnectionParameterDict(self):
+    # type: (...) -> Mapping[str, str]
     connection_dict = getattr(self, '_connection_dict', None)
     if connection_dict is None:
       # XXX Backward compatibility for older slapproxy (<= 1.0.0)
@@ -640,6 +650,7 @@ class ComputerPartition(SlapRequester):
     return connection_dict or {}
 
   def getSoftwareRelease(self):
+    # type: (...) -> SoftwareRelease
     """
     Returns the software release associate to the computer partition.
     """

slapos/slap/standalone.py

@@ -44,7 +44,7 @@ except ImportError:
   import subprocess
 
 try:
-  from typing import TYPE_CHECKING, Optional, Iterable, Dict, Union
+  from typing import TYPE_CHECKING, Iterable, Mapping, Optional, Union
   if TYPE_CHECKING:
     import subprocess
 except ImportError: # XXX to be removed once we depend on typing
@@ -501,7 +501,13 @@ class StandaloneSlapOS(object):
 
     self._initBaseDirectory(software_root, instance_root, shared_part_root)
 
-  def _initBaseDirectory(self, software_root, instance_root, shared_part_root):
+  def _initBaseDirectory(
+    self,
+    software_root, # type: str
+    instance_root, # type: str
+    shared_part_root, # type: str
+  ):
+    # type: (...) -> None
     """Create the directory after checking it's not too deep.
     """
     base_directory = self._base_directory
@@ -619,10 +625,12 @@ class StandaloneSlapOS(object):
 
   def format(
       self,
-      partition_count,
-      ipv4_address,
-      ipv6_address,
-      partition_base_name="slappart"):
+      partition_count, # type: int
+      ipv4_address, # type: str
+      ipv6_address, # type: str
+      partition_base_name="slappart", # type: str
+  ):
+    # type: (...) -> None
     """Creates `partition_count` partitions.
 
     All partitions have the same `ipv4_address` and use the current system
@@ -728,7 +736,13 @@ class StandaloneSlapOS(object):
       self._logger.error(e.output)
       raise
 
-  def supply(self, software_url, computer_guid=None, state="available"):
+  def supply(
+    self,
+    software_url, # type: str
+    computer_guid=None, # type: str | None
+    state="available", # type: str
+  ):
+    # type: (...) -> None
     """Supply a software, see ISupply.supply
 
     Software can only be supplied on this embedded computer.
@@ -742,14 +756,15 @@ class StandaloneSlapOS(object):
     )
 
   def request(
-      self,
-      software_release,
-      partition_reference,
-      software_type=None,
-      shared=False,
-      partition_parameter_kw=None,
-      filter_kw=None,
-      state=None):
+    self,
+    software_release, # type: str
+    partition_reference, # type: str
+    software_type=None, # type: str | None
+    shared=False, # type: bool
+    partition_parameter_kw=None, # type: Mapping[str, object] | None
+    filter_kw=None, # type: Mapping[str, object] | None
+    state=None, # type: str | None
+  ):
     """Request an instance, see IRequester.request
 
     Instance can only be requested on this embedded computer.

slapos/testing/utils.py

@@ -46,7 +46,7 @@ from ..grid.utils import getPythonExecutableFromSoftwarePath
 try:
   import typing
   if typing.TYPE_CHECKING:
-    from PIL import Image # pylint:disable=unused-import
+    from PIL.Image import Image # pylint:disable=unused-import
     from .testcase import SlapOSInstanceTestCase
 except ImportError:
   pass

slapos/util.py

@@ -94,8 +94,12 @@ class SafeXMLUnmrshaller(Unmarshaller, object):
 loads = SafeXMLUnmrshaller().loads
 
 
-def mkdir_p(path, mode=0o700):
-    """\
+def mkdir_p(
+  path, # type: str
+  mode=0o700, # type: int
+):
+    # type: (...) -> None
+    """
     Creates a directory and its parents, if needed.
 
     NB: If the directory already exists, it does not change its permission.