diff --git a/test/js/node/test/parallel/test-child-process-spawnsync-kill-signal.js b/test/js/node/test/parallel/test-child-process-spawnsync-kill-signal.js
new file mode 100644
index 0000000000..77d3c699fa
--- /dev/null
+++ b/test/js/node/test/parallel/test-child-process-spawnsync-kill-signal.js
@@ -0,0 +1,49 @@
+// This test is modified to not test node internals, only public APIs.
+
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const cp = require('child_process');
+
+if (process.argv[2] === 'child') {
+  setInterval(() => {}, 1000);
+} else {
+  const { SIGKILL } = require('os').constants.signals;
+
+  function spawn(killSignal) {
+    const child = cp.spawnSync(process.execPath,
+                               [__filename, 'child'],
+                               { killSignal, timeout: 100 });
+    assert.strictEqual(child.status, null);
+    assert.strictEqual(child.error.code, 'ETIMEDOUT');
+    return child;
+  }
+
+  // Verify that an error is thrown for unknown signals.
+  assert.throws(() => {
+    spawn('SIG_NOT_A_REAL_SIGNAL');
+  }, { code: 'ERR_UNKNOWN_SIGNAL', name: 'TypeError' });
+
+  // Verify that the default kill signal is SIGTERM.
+  {
+    const child = spawn(undefined);
+
+    assert.strictEqual(child.signal, 'SIGTERM');
+  }
+
+  // Verify that a string signal name is handled properly.
+  {
+    const child = spawn('SIGKILL');
+
+    assert.strictEqual(child.signal, 'SIGKILL');
+  }
+
+  // Verify that a numeric signal is handled properly.
+  {
+    assert.strictEqual(typeof SIGKILL, 'number');
+
+    const child = spawn(SIGKILL);
+
+    assert.strictEqual(child.signal, 'SIGKILL');
+  }
+}