1 files changed, 7 insertions, 0 deletions
diff --git a/test/js/node/module/node-module-module.test.js b/test/js/node/module/node-module-module.test.js
index 1363636ac..26fbb6fab 100644
--- a/test/js/node/module/node-module-module.test.js
+++ b/test/js/node/module/node-module-module.test.js
@@ -87,3 +87,10 @@ test("Module.prototype._compile", () => {
   expect(fn).toBe("/file/path/goes/here.js");
   expect(dn).toBe("/file/path/goes");
 });
+
+test("Module._extensions", () => {
+  expect(".js" in Module._extensions).toBeTrue();
+  expect(".json" in Module._extensions).toBeTrue();
+  expect(".node" in Module._extensions).toBeTrue();
+  expect(require.extensions).toBe(Module._extensions);
+});