[PATCH 5/5] test: dm: add scmi command test

[AKASHI Takahiro]

Hi Tom,

On Fri, Nov 10, 2023 at 01:21:37PM -0500, Tom Rini wrote:
> On Wed, Oct 25, 2023 at 02:14:27PM +0900, AKASHI Takahiro wrote:
> 
> > In this test, "scmi" command is tested against different sub-commands.
> > Please note that scmi command is for debug purpose and is not intended
> > in production system.
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> > Reviewed-by: Simon Glass <sjg at chromium.org>
> > Reviewed-by: Etienne Carriere <etienne.carriere at foss.st.com>
> 
> The test part of this still fails:
> https://source.denx.de/u-boot/u-boot/-/jobs/732077
> 
> I don't know why more output wasn't captured, when I run it locally
> instead I get:
> ========================================== FAILURES ===========================================
> _______________________________ test_ut[ut_dm_dm_test_scmi_cmd] _______________________________
> test/py/u_boot_spawn.py:195: in expect
>     c = os.read(self.fd, 1024).decode(errors='replace')
> E   OSError: [Errno 5] Input/output error
> 
> During handling of the above exception, another exception occurred:
> test/py/tests/test_ut.py:502: in test_ut
>     output = u_boot_console.run_command('ut ' + ut_subtest)
> test/py/u_boot_console_base.py:266: in run_command
>     m = self.p.expect([self.prompt_compiled] + self.bad_patterns)
> test/py/u_boot_spawn.py:204: in expect
>     raise ValueError('U-Boot exited with %s' % info)
> E   ValueError: U-Boot exited with signal 11 (SIGSEGV)


The command uses global variables which hold pointers to 'struct udevice'
which are to be shared between the main and the sub-commands.
Since pytest framework executes ut tests twice, once with a (normal?) device
tree and once with a flat tree,  udevices will be *voided* between
two executions.

I will fix it in v2.

Thanks,
-Takahiro Akashi


> ------------------------------------ Captured stdout call -------------------------------------
> => ut dm dm_test_scmi_cmd
> Test: dm_test_scmi_cmd: scmi.c
> SCMI device: scmi
>   protocol version: 0x20000
>   # of agents: 2
>       0: platform
>     > 1: OSPM
>   # of protocols: 4
>       Power domain management
>       Clock management
>       Reset domain management
>       Voltage domain management
>   vendor: U-Boot
>   sub vendor: Sandbox
>   impl version: 0x1
> Denying access to device:0 failed (-13)
> Denying access to protocol:0x14 on device:0 failed (-13)
> Reset failed (-13)
> Test: dm_test_scmi_cmd: scmi.c (flat tree)
> SCMI device: Q
> =================================== short test summary info ===================================
> FAILED test/py/tests/test_ut.py::test_ut[ut_dm_dm_test_scmi_cmd] - ValueError: U-Boot exited...
> 
> -- 
> Tom


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