zephyr: Check if rdb tool is available before trying to upload

Check if rdb tool is available before trying to upload test
results.

BUG=None
BRANCH=NONE
TEST=in chroot
     ./twister -T zephyr/test
     outside chroot (no rdb)
     ./twister -T zephyr/test

Signed-off-by: Al Semjonovs <asemjonovs@google.com>
Change-Id: I86863c3e55aca13ccada01db083fa0192c20f0c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3900051
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Jeremy Bettis <jbettis@chromium.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/util/twister_launcher.py b/util/twister_launcher.py
index 6fd871d31b..c30c6191f8 100755
--- a/util/twister_launcher.py
+++ b/util/twister_launcher.py
@@ -69,6 +69,7 @@ import shlex
 import subprocess
 import sys
 from pathlib import Path
+from shutil import which
 
 
 def find_checkout() -> Path:
@@ -134,6 +135,11 @@ def find_modules(mod_dir: Path) -> list:
     return modules
 
 
+def is_tool(name):
+    """Check if 'name' is on PATH and marked executable."""
+    return which(name) is not None
+
+
 def is_rdb_login():
     """Checks if user is logged into rdb"""
     cmd = ["rdb", "auth-info"]
@@ -298,7 +304,7 @@ def main():
     else:
         print("TEST EXECUTION FAILED")
 
-    if intercepted_args.upload_cros_rdb:
+    if is_tool("rdb") and intercepted_args.upload_cros_rdb:
         upload_results(ec_base)
 
     sys.exit(result.returncode)