1 files changed, 5 insertions, 0 deletions
diff --git a/test/fixtures/snapshot/v8-startup-snapshot-api.js b/test/fixtures/snapshot/v8-startup-snapshot-api.js
index f41f519755..9eccc65599 100644
--- a/test/fixtures/snapshot/v8-startup-snapshot-api.js
+++ b/test/fixtures/snapshot/v8-startup-snapshot-api.js
@@ -30,3 +30,8 @@ addDeserializeCallback(({ filePath }) => {
 setDeserializeMainFunction(({ filePath }) => {
   console.log(storage[filePath].toString());
 }, { filePath });
+assert.throws(() => setDeserializeMainFunction(() => {
+  assert.fail('unreachable duplicated main function');
+}), {
+  code: 'ERR_DUPLICATE_STARTUP_SNAPSHOT_MAIN_FUNCTION',
+});