Re: [PATCH] tests/qtest/rtl8139-test: Make the test less verbose by default

[Fabiano Rosas <farosas@suse.de>]

Daniel P. Berrangé <berrange@redhat.com> writes:

> On Wed, Feb 15, 2023 at 01:41:22PM +0100, Thomas Huth wrote:
>> We are facing the issues that some test logs in the gitlab CI are
>> too big (and thus cut off). The rtl8139-test is one of the few qtests
>> that prints many lines of output by default when running with V=1, so
>> it contributes to this problem. Almost all other qtests are silent
>> with V=1 and only print debug messages with V=2 and higher. Thus let's
>> change the rtl8139-test to behave more like the other tests and only
>> print the debug messages with V=2 (or higher).
>> 
>> Signed-off-by: Thomas Huth <thuth@redhat.com>
>> ---
>>  tests/qtest/rtl8139-test.c | 15 +++++++++++++--
>>  1 file changed, 13 insertions(+), 2 deletions(-)
>
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
>
>> 
>> diff --git a/tests/qtest/rtl8139-test.c b/tests/qtest/rtl8139-test.c
>> index 8fa3313cc3..1beb83805c 100644
>> --- a/tests/qtest/rtl8139-test.c
>> +++ b/tests/qtest/rtl8139-test.c
>> @@ -12,6 +12,8 @@
>>  #include "libqos/pci-pc.h"
>>  #include "qemu/timer.h"
>>  
>> +static int verbosity_level;
>> +
>>  /* Tests only initialization so far. TODO: Replace with functional tests */
>>  static void nop(void)
>>  {
>> @@ -45,12 +47,16 @@ static QPCIDevice *get_device(void)
>>  static unsigned __attribute__((unused)) in_##name(void) \
>>  { \
>>      unsigned res = qpci_io_read##len(dev, dev_bar, (val));     \
>> -    g_test_message("*%s -> %x", #name, res); \
>> +    if (verbosity_level >= 2) { \
>> +        g_test_message("*%s -> %x", #name, res); \
>> +    } \
>>      return res; \
>>  } \
>>  static void out_##name(unsigned v) \
>>  { \
>> -    g_test_message("%x -> *%s", v, #name); \
>> +    if (verbosity_level >= 2) { \
>> +        g_test_message("%x -> *%s", v, #name); \
>> +    } \
>>      qpci_io_write##len(dev, dev_bar, (val), v);        \
>>  }
>>  
>> @@ -195,6 +201,11 @@ static void test_init(void)
>>  int main(int argc, char **argv)
>>  {
>>      int ret;
>> +    char *v_env = getenv("V");
>> +
>> +    if (v_env) {
>> +        verbosity_level = atoi(v_env);
>> +    }
>
> *Not* something I'm requesting you to do now, just an observation / idea.
>
> We've copied this pattern into several tests.
>
> It is starting to feel like we should have a header with a
> 'qtests_env_setup()' method we call as first thing in main,
> and exporting 'verbosity_level' from the header.
>
> Perhaps also with a  'qtest_verbose(...)' macro that wraps
>
>   if (verbosity_level >= 2) {
>      g_test_message(...)
>   }

Could we maybe play with g_test_verbose and g_test_quiet? The docs say
"The default is neither g_test_verbose() nor g_test_quiet()."  So
perhaps:

V=    --quiet, g_test_quiet
V=1 no option, default verbosity
V=2 --verbose, g_test_verbose

Then test g_test_quiet|verbose instead of reading from env directly.