[PATCH v3 8/9] selftests/verification: fix verificationtest-ktap for out-of-tree execution

[wen.yang@linux.dev]

From: Wen Yang <wen.yang@linux.dev>

verificationtest-ktap used CWD-relative paths which broke when
invoked outside the verification directory (e.g. via vng).

Resolve paths via realpath "$(dirname "$0")" so the script works
from any working directory.  Accept an optional subdirectory argument
interpreted relative to the script's directory.

Suggested-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Wen Yang <wen.yang@linux.dev>
---
 tools/testing/selftests/verification/verificationtest-ktap | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/verification/verificationtest-ktap b/tools/testing/selftests/verification/verificationtest-ktap
index 18f7fe324e2f..055747cef38a 100755
--- a/tools/testing/selftests/verification/verificationtest-ktap
+++ b/tools/testing/selftests/verification/verificationtest-ktap
@@ -5,4 +5,6 @@
 #
 # Copyright (C) Arm Ltd., 2023
 
-../ftrace/ftracetest -K -v --rv ../verification
+dir=$(realpath "$(dirname "$0")")
+testdir=$(cd "$dir" && realpath "${1:-.}")
+"$dir/../ftrace/ftracetest" -K -v --rv "$testdir"
-- 
2.43.0