drm/amd/display: Add KUnit test for wb jobs

[WHAT]
Add KUnit tests to verify both functions return early when
job->fb is NULL without touching any buffer object.

Assisted-by: Copilot:Claude-Opus-4.6
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2026-06-26 18:18:55 -06:00 • committed by Alex Deucher
commit f02b2e4735
3 changed files with 52 additions and 2 deletions