test: add more tests

tests/script_test/verify_launcher_flags.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+binary="$1"
+shift
+
+for expected in "$@"; do
+  if ! grep -Fq -- "${expected}" "${binary}"; then
+    echo "Expected ${binary} to contain ${expected}" >&2
+    exit 1
+  fi
+done