test-chassis-hardware-serial-number.yml

chassis-hardware-serial-number: 
    - command: show chassis hardware
    - iterate:
        xpath: '//chassis-inventory/chassis'
        id: './serial-number'
        tests:
            - no-diff: serial-number
              err: "Test Failed!! serial-number changed! was <{{pre['serial-number']}}>, it is now <{{post['serial-number']}}> "
              info: "Test succeeded!! serial-number is the same. it is <{{pre['serial-number']}}>"