[PATCH v4 1/5] dts: fix InteractiveShell command prompt filtering

[Luca Vizzarro]

When sending a command using an instance of InteractiveShell the output
should filter out the trailing shell prompt when returning it. After
every command two shell prompts are summoned. One is consumed as it is
used as a delimiter for the command output. The second one is not
consumed and left for the next command to be sent.

Given that the consumed prompt is merely a delimiter, this should not be
added to the returned output, as it may be mistakenly be interpreted as
the command's own output.

Bugzilla ID: 1411
Fixes: 88489c0501af ("dts: add smoke tests")

Signed-off-by: Luca Vizzarro <luca.vizzarro at arm.com>
Reviewed-by: Paul Szczepanek <paul.szczepanek at arm.com>
---
 dts/framework/remote_session/interactive_shell.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dts/framework/remote_session/interactive_shell.py b/dts/framework/remote_session/interactive_shell.py
index 074a541279..aa5d2d9be8 100644
--- a/dts/framework/remote_session/interactive_shell.py
+++ b/dts/framework/remote_session/interactive_shell.py
@@ -132,11 +132,11 @@ def send_command(self, command: str, prompt: str | None = None) -> str:
         self._stdin.flush()
         out: str = ""
         for line in self._stdout:
-            out += line
             if prompt in line and not line.rstrip().endswith(
                 command.rstrip()
             ):  # ignore line that sent command
                 break
+            out += line
         self._logger.debug(f"Got output: {out}")
         return out
 
-- 
2.34.1