Re: [PATCH] selftests: Warn about skipped tests in result summary

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Hi Laura,

Thank you for making change.

On 11/22/24 11:19 PM, Shuah wrote:
> On 11/22/24 08:55, Laura Nao wrote:
>> Update the functions that print the test totals at the end of a selftest
>> to include a warning message when skipped tests are detected. The
>> message advises users that skipped tests may indicate missing
>> configuration options and suggests enabling them to improve coverage.
>>
>> Signed-off-by: Laura Nao <laura.nao@xxxxxxxxxxxxx>
>> ---
>> This patch follows up on a previous discussion[1] and aims to highlight
>> skipped tests for the user's attention.
>>
>> [1] https://lore.kernel.org/lkml/2bb2d338-cd00-4ac2-b8bd-5579eae82637@xxxxxxxxxxxxxxxxxxx/
>> ---
>>   tools/testing/selftests/kselftest.h               | 4 ++++
>>   tools/testing/selftests/kselftest/ksft.py         | 3 +++
>>   tools/testing/selftests/kselftest/ktap_helpers.sh | 4 ++++
>>   3 files changed, 11 insertions(+)
>>
>> diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
>> index 29fedf609611..d3f64b333acd 100644
>> --- a/tools/testing/selftests/kselftest.h
>> +++ b/tools/testing/selftests/kselftest.h
>> @@ -147,6 +147,10 @@ static inline void ksft_set_plan(unsigned int plan)
>>     static inline void ksft_print_cnts(void)
>>   {
>> +    if (ksft_cnt.ksft_xskip > 0)
>> +        printf(
>> +            "# Skipped tests detected. Consider enabling relevant config options to improve coverage.\n"
Looks good. Printing the number of skipped tests would be an improvement.
I'm thinking about a case where some tests got failed and some skipped. Would
this warning be useful in that case?

> 
> I like this. How about printing the number of skipped tests in this
> message also to make it easy to parse.
> 
> Same comment on other print messages,
> 
>> +        );
>>       if (ksft_plan != ksft_test_num())
>>           printf("# Planned tests != run tests (%u != %u)\n",
>>               ksft_plan, ksft_test_num());
>> diff --git a/tools/testing/selftests/kselftest/ksft.py b/tools/testing/selftests/kselftest/ksft.py
>> index bf215790a89d..7675a15a1264 100644
>> --- a/tools/testing/selftests/kselftest/ksft.py
>> +++ b/tools/testing/selftests/kselftest/ksft.py
>> @@ -27,6 +27,9 @@ def set_plan(num_tests):
>>       def print_cnts():
>> +    if ksft_cnt['skip'] > 0:
>> +        print("# Skipped tests detected. Consider enabling relevant config options to improve coverage.")
>> +
>>       print(
>>           f"# Totals: pass:{ksft_cnt['pass']} fail:{ksft_cnt['fail']} xfail:0 xpass:0 skip:{ksft_cnt['skip']} error:0"
>>       )
>> diff --git a/tools/testing/selftests/kselftest/ktap_helpers.sh b/tools/testing/selftests/kselftest/ktap_helpers.sh
>> index 79a125eb24c2..a4211221ccd6 100644
>> --- a/tools/testing/selftests/kselftest/ktap_helpers.sh
>> +++ b/tools/testing/selftests/kselftest/ktap_helpers.sh
>> @@ -107,5 +107,9 @@ ktap_finished() {
>>   }
>>     ktap_print_totals() {
>> +    if [ "$KTAP_CNT_SKIP" -gt 0 ]; then
>> +        echo "# Skipped tests detected. " \
>> +            "Consider enabling relevant config options to improve coverage."
>> +    fi
>>       echo "# Totals: pass:$KTAP_CNT_PASS fail:$KTAP_CNT_FAIL xfail:0 xpass:0 skip:$KTAP_CNT_SKIP error:0"
>>   }
> 
> thanks,
> -- Shuah
> 

-- 
BR,
Muhammad Usama Anjum





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