Fix quoting in run_test.sh

tests/run_test.sh

@@ -5,20 +5,21 @@
 
 set -e
 
-TEST_FILE="${1:?Usage: $0 <test_file>"
+TEST_FILE=$1
+if [ -z "$TEST_FILE" ]; then
+    echo "Usage: $0 <test_file>"
+    exit 1
+fi
 
 # --- CLEANUP ---
-# Kill existing screen and all its processes
 if screen -list | grep -q kernel-test; then
     echo "Killing existing kernel-test screen..."
     screen -S kernel-test -X quit 2>/dev/null || true
     sleep 2
-    # Nuclear option: kill any lingering python test processes
     pkill -f "python.*test_fmha" 2>/dev/null || true
     sleep 1
 fi
 
-# Remove old log
 rm -f /tmp/kernel-test.log
 
 # --- START ---
@@ -28,14 +29,13 @@ export PYTHONPATH=/root/dsv4-nvfp4-workspace/kernel
 
 echo "Running: python -u $TEST_FILE"
 echo "Log: /tmp/kernel-test.log"
-screen -dmS kernel-test bash -c "python -u $TEST_FILE > /tmp/kernel-test.log 2>&1"
+screen -dmS kernel-test bash -c 'python -u '"$TEST_FILE"' > /tmp/kernel-test.log 2>&1'
 sleep 2
 
-# Verify it started
 if screen -list | grep -q kernel-test; then
-    echo "OK: screen 'kernel-test' is running"
+    echo "OK: screen kernel-test is running"
 else
-    echo "FAIL: screen did not start. Check /tmp/kernel-test.log"
+    echo "FAIL: screen did not start. Log below:"
     cat /tmp/kernel-test.log 2>/dev/null
     exit 1
 fi