Robot Framework -SSHLibrary - File Should Exist - automated-tests

Question

I am currently developing test case in Robot Framework with Eclipse and RED plugin to automate a test case on Linux VM.
The code for one of the keyword goes like this
**Check Auth Certificate**
[Documentation] To Check Whether the Authentication certificate is present or not
Log *** Needs to be implemented ***
Send Command pwd
Send Command cd /root/.ssh/
Send Command pwd
${fileExist} File Should Exist 'mqtt-server.crt'
Send Command is a custom keyword to execute the commands with Write & Read Keywords and logs the result.
Problem is - there is a file (mqtt-server.crt) present in this location - /root/.ssh/. From the console output, am able to validate that the control has reached within the required folder.
However, when the keyword from SSHLibrary- File Should Exist is executed, it Fails.
I want to validate if the mentioned file is present in the folder, and if it is present, it needs to be deleted.
The output in the console is
20210623 00:23:47.024 : INFO : *** Needs to be implemented ***
20210623 00:23:47.118 : INFO : pwd
20210623 00:23:48.120 : INFO : /root
[root#<host> ~]#
20210623 00:23:48.121 : INFO : Response After :: pwd - -> /root
[root#<host> ~]#
20210623 00:23:48.226 : INFO : cd /root/.ssh/
20210623 00:23:49.227 : INFO : [root#<host> .ssh]#
20210623 00:23:49.227 : INFO : ${resultCommand} = [root#<host> .ssh]#
20210623 00:23:49.228 : INFO : Response After :: cd /root/.ssh/ - -> [root#<host> .ssh]#
20210623 00:23:49.320 : INFO : pwd
20210623 00:23:50.321 : INFO : /root/.ssh
20210623 00:23:50.321 : INFO : ${resultCommand} = /root/.ssh
20210623 00:23:50.408 : INFO : ls
20210623 00:23:50.408 : INFO : ${responseCommand} = ls
20210623 00:23:52.411 : INFO : known_hosts mqtt-server.crt
20210623 00:23:52.411 : INFO : ${resultCommand} = known_hosts mqtt-server.crt
[root#<host> .ssh]#
20210623 00:23:52.413 : INFO : Response After :: ls - -> known_hosts mqtt-server.crt
[root#<host> .ssh]#
20210623 00:23:52.413 : INFO : ${listOfFiles} = None
**20210623 00:23:52.415 : DEBUG : [chan 1] Max packet in: 32768 bytes
20210623 00:23:52.529 : INFO : [chan 1] Opened sftp connection (server version 3)
20210623 00:23:52.529 : DEBUG : [chan 1] normalize(b'.')
20210623 00:23:52.570 : DEBUG : [chan 1] stat(b'mqtt-server.crt')
20210623 00:23:52.603 : FAIL : File 'mqtt-server.crt' does not exist.
20210623 00:23:52.604 : DEBUG : Traceback (most recent call last):
File "D:\Program Files (x86)\Python\Python39\Lib\site-packages\SSHLibrary\library.py", line 1809, in file_should_exist
raise AssertionError("File '%s' does not exist." % path)**
Ending test: Demo-Telemetry.TestCases.ConnectToJumpServer.First Jump
Can you please let me know, what needs to be changed to make this working or how this can be fixed .

Answer 1

use absolute path in "File Should Exist" keyword. Or use "Move Directory" keyword. I dont think that if you change directory in your custom keyword, that this directory changes for the OperatingSystem library.
${fileExist} File Should Exist /root/.ssh/mqtt-server.crt