[PATCH v5 3/3] dts: store stderr in RemoteCommandExecutionError

[Juraj Linkeš]

> diff --git a/dts/framework/exception.py b/dts/framework/exception.py
> index cce1e0231a..50724acdf2 100644
> --- a/dts/framework/exception.py
> +++ b/dts/framework/exception.py
> @@ -2,6 +2,7 @@
>  # Copyright(c) 2010-2014 Intel Corporation
>  # Copyright(c) 2022-2023 PANTHEON.tech s.r.o.
>  # Copyright(c) 2022-2023 University of New Hampshire
> +# Copyright(c) 2024 Arm Limited
>
>  """DTS exceptions.
>
> @@ -129,21 +130,27 @@ class RemoteCommandExecutionError(DTSError):
>      severity: ClassVar[ErrorSeverity] = ErrorSeverity.REMOTE_CMD_EXEC_ERR
>      #: The executed command.
>      command: str
> +    _command_stderr: str
>      _command_return_code: int
>
> -    def __init__(self, command: str, command_return_code: int):
> +    def __init__(self, command: str, command_return_code: int, command_stderr: str):

I wanted to change the order here as well to command, command_stderr
and command_return_code last. The API change doesn't matter as DTS is
still experimental

>          """Define the meaning of the first two arguments.
>
>          Args:
>              command: The executed command.
>              command_return_code: The return code of the executed command.
> +            command_stderr: The stderr of the executed command.

And here.

>          """
>          self.command = command
>          self._command_return_code = command_return_code
> +        self._command_stderr = command_stderr

And here.

>
>      def __str__(self) -> str:
> -        """Include both the command and return code in the string representation."""
> -        return f"Command {self.command} returned a non-zero exit code: {self._command_return_code}"
> +        """Include the command, its return code and stderr in the string representation."""
> +        return (
> +            f"Command '{self.command}' returned a non-zero exit code: "
> +            f"{self._command_return_code}\nStderr: {self._command_stderr}"
> +        )
>
>
>  class InteractiveCommandExecutionError(DTSError):