[PATCH 3/7] dts: fix remote session file transfer vars

["Tomáš Ďurovec" <tomas.durovec@pantheon.tech>]

The OSSession (and its subclasses) should accept PurePaths
for remote paths to translate from OS-unaware (PurePath)
to OS-aware (Path) only on the remote side. For local paths,
they should accept Paths, as Python is OS-aware locally.

Signed-off-by: Tomáš Ďurovec <tomas.durovec@pantheon.tech>
---
 .../remote_session/remote_session.py          | 24 ++++++----------
 dts/framework/remote_session/ssh_session.py   | 18 ++++--------
 dts/framework/testbed_model/os_session.py     | 28 ++++++++-----------
 dts/framework/testbed_model/posix_session.py  | 18 ++++--------
 4 files changed, 30 insertions(+), 58 deletions(-)

diff --git a/dts/framework/remote_session/remote_session.py b/dts/framework/remote_session/remote_session.py
index 8c580b070f..ab83f5b266 100644
--- a/dts/framework/remote_session/remote_session.py
+++ b/dts/framework/remote_session/remote_session.py
@@ -12,7 +12,7 @@
 
 from abc import ABC, abstractmethod
 from dataclasses import InitVar, dataclass, field
-from pathlib import PurePath
+from pathlib import Path, PurePath
 
 from framework.config import NodeConfiguration
 from framework.exception import RemoteCommandExecutionError
@@ -196,35 +196,29 @@ def is_alive(self) -> bool:
         """Check whether the remote session is still responding."""
 
     @abstractmethod
-    def copy_from(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_from(self, source_file: str | PurePath, destination_dir: str | Path) -> None:
         """Copy a file from the remote Node to the local filesystem.
 
         Copy `source_file` from the remote Node associated with this remote session
-        to `destination_file` on the local filesystem.
+        to `destination_dir` on the local filesystem.
 
         Args:
             source_file: The file on the remote Node.
-            destination_file: A file or directory path on the local filesystem.
+            destination_dir: The directory path on the local filesystem where the `source_file`
+                will be saved.
         """
 
     @abstractmethod
-    def copy_to(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_to(self, source_file: str | Path, destination_dir: str | PurePath) -> None:
         """Copy a file from local filesystem to the remote Node.
 
-        Copy `source_file` from local filesystem to `destination_file` on the remote Node
+        Copy `source_file` from local filesystem to `destination_dir` on the remote Node
         associated with this remote session.
 
         Args:
             source_file: The file on the local filesystem.
-            destination_file: A file or directory path on the remote Node.
+            destination_dir: The directory path on the remote Node where the `source_file`
+                will be saved.
         """
 
     @abstractmethod
diff --git a/dts/framework/remote_session/ssh_session.py b/dts/framework/remote_session/ssh_session.py
index 66f8176833..329121913f 100644
--- a/dts/framework/remote_session/ssh_session.py
+++ b/dts/framework/remote_session/ssh_session.py
@@ -5,7 +5,7 @@
 
 import socket
 import traceback
-from pathlib import PurePath
+from pathlib import Path, PurePath
 
 from fabric import Connection  # type: ignore[import-untyped]
 from invoke.exceptions import (  # type: ignore[import-untyped]
@@ -103,21 +103,13 @@ def is_alive(self) -> bool:
         """Overrides :meth:`~.remote_session.RemoteSession.is_alive`."""
         return self.session.is_connected
 
-    def copy_from(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_from(self, source_file: str | PurePath, destination_dir: str | Path) -> None:
         """Overrides :meth:`~.remote_session.RemoteSession.copy_from`."""
-        self.session.get(str(destination_file), str(source_file))
+        self.session.get(str(source_file), str(destination_dir))
 
-    def copy_to(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_to(self, source_file: str | Path, destination_dir: str | PurePath) -> None:
         """Overrides :meth:`~.remote_session.RemoteSession.copy_to`."""
-        self.session.put(str(source_file), str(destination_file))
+        self.session.put(str(source_file), str(destination_dir))
 
     def close(self) -> None:
         """Overrides :meth:`~.remote_session.RemoteSession.close`."""
diff --git a/dts/framework/testbed_model/os_session.py b/dts/framework/testbed_model/os_session.py
index 79f56b289b..1aac3659bf 100644
--- a/dts/framework/testbed_model/os_session.py
+++ b/dts/framework/testbed_model/os_session.py
@@ -25,7 +25,7 @@
 from abc import ABC, abstractmethod
 from collections.abc import Iterable
 from ipaddress import IPv4Interface, IPv6Interface
-from pathlib import PurePath
+from pathlib import Path, PurePath
 from typing import Union
 
 from framework.config import Architecture, NodeConfiguration, NodeInfo
@@ -178,35 +178,29 @@ def join_remote_path(self, *args: str | PurePath) -> PurePath:
         """
 
     @abstractmethod
-    def copy_from(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_from(self, source_file: str | PurePath, destination_dir: str | Path) -> None:
         """Copy a file from the remote node to the local filesystem.
 
         Copy `source_file` from the remote node associated with this remote
-        session to `destination_file` on the local filesystem.
+        session to `destination_dir` on the local filesystem.
 
         Args:
-            source_file: the file on the remote node.
-            destination_file: a file or directory path on the local filesystem.
+            source_file: The file on the remote node.
+            destination_dir: The directory path on the local filesystem where the `source_file`
+                will be saved.
         """
 
     @abstractmethod
-    def copy_to(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_to(self, source_file: str | Path, destination_dir: str | PurePath) -> None:
         """Copy a file from local filesystem to the remote node.
 
-        Copy `source_file` from local filesystem to `destination_file`
+        Copy `source_file` from local filesystem to `destination_dir`
         on the remote node associated with this remote session.
 
         Args:
-            source_file: the file on the local filesystem.
-            destination_file: a file or directory path on the remote node.
+            source_file: The file on the local filesystem.
+            destination_dir: The directory path on the remote Node where the `source_file`
+                will be saved.
         """
 
     @abstractmethod
diff --git a/dts/framework/testbed_model/posix_session.py b/dts/framework/testbed_model/posix_session.py
index d279bb8b53..2449c0ab35 100644
--- a/dts/framework/testbed_model/posix_session.py
+++ b/dts/framework/testbed_model/posix_session.py
@@ -13,7 +13,7 @@
 
 import re
 from collections.abc import Iterable
-from pathlib import PurePath, PurePosixPath
+from pathlib import Path, PurePath, PurePosixPath
 
 from framework.config import Architecture, NodeInfo
 from framework.exception import DPDKBuildError, RemoteCommandExecutionError
@@ -85,21 +85,13 @@ def join_remote_path(self, *args: str | PurePath) -> PurePosixPath:
         """Overrides :meth:`~.os_session.OSSession.join_remote_path`."""
         return PurePosixPath(*args)
 
-    def copy_from(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_from(self, source_file: str | PurePath, destination_dir: str | Path) -> None:
         """Overrides :meth:`~.os_session.OSSession.copy_from`."""
-        self.remote_session.copy_from(source_file, destination_file)
+        self.remote_session.copy_from(source_file, destination_dir)
 
-    def copy_to(
-        self,
-        source_file: str | PurePath,
-        destination_file: str | PurePath,
-    ) -> None:
+    def copy_to(self, source_file: str | Path, destination_dir: str | PurePath) -> None:
         """Overrides :meth:`~.os_session.OSSession.copy_to`."""
-        self.remote_session.copy_to(source_file, destination_file)
+        self.remote_session.copy_to(source_file, destination_dir)
 
     def remove_remote_dir(
         self,
-- 
2.46.1