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

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

[Thomas Huth]

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(-)

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);
+    }
 
     qtest_start("-device rtl8139");
 
-- 
2.31.1

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

[Daniel P. Berrangé]

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(...)
  }


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

[Fabiano Rosas]

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.

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

[Thomas Huth]

On 15/02/2023 14.38, Fabiano Rosas wrote:
> 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(...)
>>    }

Agree, we could generalize this stuff somehow ... maybe also simply adding a 
qtest_log(int level, char *format, ...) function that does the getenv() 
checking on the first invocation, or something like that.

> 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.

Sounds like an option, too ... but we would not have a V=3 level that way 
(which is already used in qom-test.c - not sure whether we really need it, 
though, we could use V=2 for all debug messages, too).

  Thomas