[PATCH 19/21] py/tests: test_efi_selftest: Add test for counting EFI netdevices

[Tom Rini]

On Thu, Jan 23, 2025 at 07:37:26AM -0700, Simon Glass wrote:
> Hi Adriano,
> 
> On Wed, 22 Jan 2025 at 10:10, Adriano Cordova <adrianox at gmail.com> wrote:
> >
> > check that the number of ethernet udevices matches the number of simple
> > network protocols
> >
> > Signed-off-by: Adriano Cordova <adriano.cordova at canonical.com>
> > ---
> >  test/py/tests/test_efi_selftest.py | 21 +++++++++++++++++++++
> >  1 file changed, 21 insertions(+)
> >
> > diff --git a/test/py/tests/test_efi_selftest.py b/test/py/tests/test_efi_selftest.py
> > index 310d8ed294..af9992a6f7 100644
> > --- a/test/py/tests/test_efi_selftest.py
> > +++ b/test/py/tests/test_efi_selftest.py
> > @@ -195,3 +195,24 @@ def test_efi_selftest_tcg2(u_boot_console):
> >      if u_boot_console.p.expect(['Summary: 0 failures', 'Press any key']):
> >          raise Exception('Failures occurred during the EFI selftest')
> >      u_boot_console.restart_uboot()
> > +
> > + at pytest.mark.buildconfigspec('cmd_bootefi_selftest')
> > + at pytest.mark.buildconfigspec('cmd_dm')
> > +def test_efi_selftest_count_netdevices(u_boot_console):
> > +    """Test the EFI net device driver
> > +
> > +    u_boot_console -- U-Boot console
> > +
> > +    This function counts the number of ETH_UCLASS probed udevices
> > +    calls the EFI net device selftest to check that the EFI driver
> > +    sees the same.
> > +    """
> > +    u_boot_console.restart_uboot()
> 
> We should avoid restarting U-Boot in a test unless there is a strong
> need. It makes things a lot slower!

Yes, if we can not reboot here that would be good.

> > +    response = u_boot_console.run_command('dm tree')
> > +    lines = response.splitlines()[2:]
> > +    ethernet_count = sum(1 for line in lines if line.strip().startswith('ethernet') and '[ + ]' in line)
> 
> This test should be written in C, e.g:
> 
> struct udevice *dev;
> int count;
> uclass_foreach_dev(dev, UCLASS_ETH)
>     if (device_active(dev))
>          count++;
> 
> > +
> > +    u_boot_console.run_command(cmd='setenv efi_selftest netdevices')
> > +    u_boot_console.run_command('bootefi selftest', wait_for_prompt=False)
> > +    if u_boot_console.p.expect([f'Detected {ethernet_count} active EFI net devices']):
> > +        raise Exception('Failures occurred during the EFI selftest')
> 
> Again, this should be written in C and use run_command().

No, if these are written in python already, we can leave them in python.
C is bad for strings.

-- 
Tom
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