diff --git a/lib/nodejs/test/include.test.mjs b/lib/nodejs/test/include.test.mjs
new file mode 100644
index 0000000..70c7b24
--- /dev/null
+++ b/lib/nodejs/test/include.test.mjs
@@ -0,0 +1,18 @@
+import test from "tape";
+import { IncludeTest as IncludeTestEs5 } from "./gen-nodejs/Include_types.js";
+import { IncludeTest as IncludeTestEs6 } from "./gen-nodejs-es6/Include_types.js";
+import { IncludeTest as IncludeTestEsm } from "./gen-nodejs-esm/Include_types.mjs";
+
+function constructTest(classVariant) {
+  return function (t) {
+    const obj = new classVariant({ bools: { im_true: true, im_false: false } });
+
+    t.assert(obj.bools.im_true === true);
+    t.assert(obj.bools.im_false === false);
+    t.end();
+  };
+}
+
+test("construct es5", constructTest(IncludeTestEs5));
+test("construct es6", constructTest(IncludeTestEs6));
+test("construct esm", constructTest(IncludeTestEsm));