selftests/hid: skip tests with HID-BPF if udev-hid-bpf is not installed

udev-hid-bpf is still not installed everywhere, and we should probably
not assume it is installed automatically.

Link: https://lore.kernel.org/r/20240506143612.148031-1-bentiss@kernel.orgReviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>

tools/testing/selftests/hid/tests/base.py

@@ -8,6 +8,7 @@
 import libevdev
 import os
 import pytest
+import shutil
 import subprocess
 import time
 
@@ -240,6 +241,10 @@ class BaseTestCase:
             root_dir = (script_dir / "../../../../..").resolve()
             bpf_dir = root_dir / "drivers/hid/bpf/progs"
 
+            udev_hid_bpf = shutil.which("udev-hid-bpf")
+            if not udev_hid_bpf:
+                pytest.skip("udev-hid-bpf not found in $PATH, skipping")
+
             wait = False
             for _, rdesc_fixup in self.hid_bpfs:
                 if rdesc_fixup: