The assertion is to detect a stap command error not depending on Ruby, and also
to make us report an error to the rpms/systemtap easier.
You can see the upstream systemtap routine builds when an error happens on
Fedora rawhide. There may be the same error on the latest build.
https://builder.sourceware.org/buildbot/#/builders/systemtap-fedrawhide-x86_64
For example, the assertion can catch the following stap command error.
```
$ tmt -c distro=fedora-rawhide run --all provision -h virtual -i fedora-rawhide tests -n '^/systemtap-static-probes-in-ruby$'
/var/tmp/tmt/run-014
...
total: 1 warn
$ echo $?
1
$ tmt run --id run-014 report -vvv
...
:: [ 23:29:01 ] :: [ BEGIN ] :: Checking stap to detect an error not depending on Ruby :: actually running 'stap -v -e 'probe begin { exit() }''
Pass 1: parsed user script and 586 library scripts using 314412virt/282316res/16080shr/267544data kb, in 470usr/90sys/698real ms.
Pass 2: analyzed script: 1 probe, 1 function, 0 embeds, 0 globals using 324576virt/293092res/16744shr/277708data kb, in 30usr/10sys/37real ms.
Pass 3: translated to C into "/tmp/stapVBIxqm/stap_17cbdff69dacffb521a9178adb053400_1161_src.c" using 324576virt/293408res/17060shr/277708data kb, in 0usr/0sys/0real ms.
<command-line>: fatal error: /tmp/stapVBIxqm/stapconf_7fa4e6888ba17abb7b5cc888ef91222c_947.h: No such file or directory
compilation terminated.
<command-line>: fatal error: /tmp/stapVBIxqm/stapconf_7fa4e6888ba17abb7b5cc888ef91222c_947.h: No such file or directory
compilation terminated.
<command-line>: fatal error: /tmp/stapVBIxqm/stapconf_7fa4e6888ba17abb7b5cc888ef91222c_947.h: No such file or directory
make[2]: *** [/usr/src/kernels/6.13.0-0.rc3.20241220git8faabc041a00.33.fc42.x86_64/scripts/Makefile.build:194: stap_17cbdff69dacffb521a9178adb053400_1161_src.o] Error 1
make[2]: *** Waiting for unfinished jobs....
compilation terminated.
make[2]: *** [/usr/src/kernels/6.13.0-0.rc3.20241220git8faabc041a00.33.fc42.x86_64/scripts/Makefile.build:194: stap_17cbdff69dacffb521a9178adb053400_1161_aux_0.o] Error 1
make[2]: *** [/usr/src/kernels/6.13.0-0.rc3.20241220git8faabc041a00.33.fc42.x86_64/scripts/Makefile.build:194: stap_symbols.o] Error 1
make[1]: *** [/usr/src/kernels/6.13.0-0.rc3.20241220git8faabc041a00.33.fc42.x86_64/Makefile:2035: .] Error 2
make: *** [Makefile:263: __sub-make] Error 2
WARNING: kbuild exited with status: 2
Pass 4: compiled C into "stap_17cbdff69dacffb521a9178adb053400_1161.ko" in 260usr/140sys/397real ms.
Pass 4: compilation failed. [man error::pass4]
Kernel version 6.13.0 is outside tested range 3.10 ... 6.12-rc
:: [ 23:29:02 ] :: [ FAIL ] :: Checking stap to detect an error not depending on Ruby (Expected 0, got 1)
:: [ 23:29:02 ] :: [ FATAL ] ::
:: [ 23:29:02 ] :: [ FAIL ] :: (Assert: expected 0, got 1)
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Duration: 125s
:: Assertions: 7 good, 2 bad
:: RESULT: WARN (Setup)
...
total: 1 warn
$ echo $?
1
```
While require on file in rpm works now, with dnf-5 it might not work out
of the box. Let's keep adding package which contains this file in the
require/recommend instead
Extend stap buffer size and limit "noise" produced by ruby interpreter
so stap output is more usable.
This patch fixes the execution of the test for Fedora. It also
includes improved waiting for stap, which uses now active waiting
instead of static sleep.
Signed-off-by: Miroslav Vadkerti <mvadkert@redhat.com>
systemtap-static-probes-in-ruby: for testing ruby's systemtap api
bundler-unit-tests: to run bundler's unit tests
run-basic-rails-application: a simple rails application test
Signed-off-by: Miroslav Vadkerti <mvadkert@redhat.com>
