wasi-testsuite-adapter.py: handle SIGTERM

cf. WebAssembly/wasi-testsuite#83

Author: yamt

Diff for: test/wasi-testsuite-adapter.py

@@ -6,8 +6,17 @@
 import os
 import shlex
 import sys
+import signal
 import subprocess
 
+
+def handler(a, b):
+    sys.exit(1)  # this terminates subrpocess.run
+
+
+signal.signal(signal.SIGTERM, handler)
+
+
 # https://github.com/WebAssembly/wasi-testsuite/pull/46
 executable = os.getenv("TEST_RUNTIME_EXE")
 if executable is None: