[U-Boot] [PATCH] test/py: Support setting up specific timeout

[Michal Simek <michal.simek@xilinx.com>]

On 18.5.2016 16:02, Michal Simek wrote:
> On 18.5.2016 15:11, Michal Simek wrote:
>> Large file transfers, flash erasing and more complicated tests
>> requires more time to finish. Provide a way to setup specific
>> timeout directly in test.
>>
>> For example description for 50s test:
>> timeout = 50000
>> with u_boot_console.temporary_timeout(timeout):
>>   u_boot_console.run_command(...)
>>
>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>> ---
>>
>>  test/py/u_boot_console_base.py | 33 +++++++++++++++++++++++++++++++++
>>  1 file changed, 33 insertions(+)
>>
>> diff --git a/test/py/u_boot_console_base.py b/test/py/u_boot_console_base.py
>> index f7434363fbcb..82bbba43463e 100644
>> --- a/test/py/u_boot_console_base.py
>> +++ b/test/py/u_boot_console_base.py
>> @@ -56,6 +56,24 @@ class ConsoleDisableCheck(object):
>>          self.console.disable_check_count[self.check_type] -= 1
>>          self.console.eval_bad_patterns()
>>  
>> +
>> +class ConsoleSetupTimeout(object):
>> +    """Context manager (for Python's with statement) that temporarily setup
>> +    timeout for specific comnand. This is useful when execution time is greater
>> +    then default 30s."""
>> +
>> +    def __init__(self, console, timeout):
>> +        self.console = console
>> +        self.console.orig_timeout = self.console.p.timeout
>> +        self.console.p.timeout = timeout
>> +
>> +    def __enter__(self):
>> +        return self
>> +
>> +    def __exit__(self, extype, value, traceback):
>> +        self.console.p = self.console.get_spawn()
> 
> This line should be there. It is resetting console. I will do more
> testing on real hw not on qemu.
> 
> Thanks,
> Michal
> 
>> +        self.console.p.timeout = self.console.orig_timeout

This is also wrong because self.console.p is closed when timeout occurs
which caused exception which calls cleanup_spawn which close p.

This exit should be like this.
    def __exit__(self, extype, value, traceback):
        if not self.console.p:
            return
        self.console.p.timeout = self.orig_timeout

Thanks,
Michal