[PATCH 5/6] dts: add statefulness to InteractiveShell

[Luca Vizzarro <luca.vizzarro@arm.com>]

The InteractiveShell class can be started in privileged mode, but this
is not saved for reference to the tests developer. Moreover, originally
a command timeout could only be set at initialisation, this can now be
amended and reset back as needed.

Signed-off-by: Luca Vizzarro <luca.vizzarro@arm.com>
Reviewed-by: Jack Bond-Preston <jack.bond-preston@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
---
 .../remote_session/interactive_shell.py        | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/dts/framework/remote_session/interactive_shell.py b/dts/framework/remote_session/interactive_shell.py
index a2c7b30d9f..5d80061e8d 100644
--- a/dts/framework/remote_session/interactive_shell.py
+++ b/dts/framework/remote_session/interactive_shell.py
@@ -41,8 +41,10 @@ class InteractiveShell(ABC):
     _stdout: channel.ChannelFile
     _ssh_channel: Channel
     _logger: DTSLogger
+    __default_timeout: float
     _timeout: float
     _app_args: Params | None
+    _is_privileged: bool = False
 
     #: Prompt to expect at the end of output when sending a command.
     #: This is often overridden by subclasses.
@@ -88,7 +90,7 @@ def __init__(
         self._ssh_channel.settimeout(timeout)
         self._ssh_channel.set_combine_stderr(True)  # combines stdout and stderr streams
         self._logger = logger
-        self._timeout = timeout
+        self._timeout = self.__default_timeout = timeout
         self._app_args = app_args
         self._start_application(get_privileged_command)
 
@@ -105,6 +107,7 @@ def _start_application(self, get_privileged_command: Callable[[str], str] | None
         start_command = f"{self.path} {self._app_args or ''}"
         if get_privileged_command is not None:
             start_command = get_privileged_command(start_command)
+            self._is_privileged = True
         self.send_command(start_command)
 
     def send_command(self, command: str, prompt: str | None = None) -> str:
@@ -150,3 +153,16 @@ def close(self) -> None:
     def __del__(self) -> None:
         """Make sure the session is properly closed before deleting the object."""
         self.close()
+
+    @property
+    def is_privileged(self) -> bool:
+        """Property specifying if the interactive shell is running in privileged mode."""
+        return self._is_privileged
+
+    def set_timeout(self, timeout: float):
+        """Set the timeout to use with the next commands."""
+        self._timeout = timeout
+
+    def reset_timeout(self):
+        """Reset the timeout to the default setting."""
+        self._timeout = self.__default_timeout
-- 
2.34.1