Re: [RFC PATCH] tests/avocado: apply a band aid to aspeed-evb login

["Cédric Le Goater" <clg@kaod.org>]

On 8/11/22 16:08, John Snow wrote:
> On Thu, Aug 11, 2022 at 7:43 AM Alex Bennée <alex.bennee@linaro.org> wrote:
>>
>> This is really a limitation of the underlying console code which
>> doesn't allow us to detect the login: and following "#" prompts
>> because it reads input line wise. By adding a small delay we ensure
>> that the login prompt has appeared so we don't accidentally spaff the
>> shell commands to a confused getty in the guest.
>>
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>> Cc: Cédric Le Goater <clg@kaod.org>
>> Cc: John Snow <jsnow@redhat.com>
>> ---
>>   tests/avocado/machine_aspeed.py | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/tests/avocado/machine_aspeed.py b/tests/avocado/machine_aspeed.py
>> index c54da0fd8f..65d38f4efa 100644
>> --- a/tests/avocado/machine_aspeed.py
>> +++ b/tests/avocado/machine_aspeed.py
>> @@ -101,7 +101,9 @@ def do_test_arm_aspeed_buidroot_start(self, image, cpu_id):
>>           self.wait_for_console_pattern('Starting kernel ...')
>>           self.wait_for_console_pattern('Booting Linux on physical CPU ' + cpu_id)
>>           self.wait_for_console_pattern('lease of 10.0.2.15')
>> +        # the line before login:
>>           self.wait_for_console_pattern('Aspeed EVB')
>> +        time.sleep(0.1)
>>           exec_command(self, 'root')
>>           time.sleep(0.1)
>>
>> --
>> 2.30.2
>>
> 
> Augh. Sorry my hunch was wrong. I wasn't aware of this problem.
> 
> Is ... this 0.1 second sleep really sufficient? I guess it's better
> than not having it, and I can't reasonably ask for something more
> thorough.

tests/avocado/machine_aarch64_virt.py has a few of these for the same
reason I guess.

C.