1 files changed, 117 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-util-inherits.js b/tests/node_compat/test/parallel/test-util-inherits.js
new file mode 100644
index 000000000..ac1ab596b
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-util-inherits.js
@@ -0,0 +1,117 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const { inherits } = require('util');
+
+// Super constructor
+function A() {
+  this._a = 'a';
+}
+A.prototype.a = function() { return this._a; };
+
+// One level of inheritance
+function B(value) {
+  A.call(this);
+  this._b = value;
+}
+inherits(B, A);
+B.prototype.b = function() { return this._b; };
+
+assert.deepStrictEqual(
+  Object.getOwnPropertyDescriptor(B, 'super_'),
+  {
+    value: A,
+    enumerable: false,
+    configurable: true,
+    writable: true
+  }
+);
+
+const b = new B('b');
+assert.strictEqual(b.a(), 'a');
+assert.strictEqual(b.b(), 'b');
+assert.strictEqual(b.constructor, B);
+
+// Two levels of inheritance
+function C() {
+  B.call(this, 'b');
+  this._c = 'c';
+}
+inherits(C, B);
+C.prototype.c = function() { return this._c; };
+C.prototype.getValue = function() { return this.a() + this.b() + this.c(); };
+
+assert.strictEqual(C.super_, B);
+
+const c = new C();
+assert.strictEqual(c.getValue(), 'abc');
+assert.strictEqual(c.constructor, C);
+
+// Inherits can be called after setting prototype properties
+function D() {
+  C.call(this);
+  this._d = 'd';
+}
+
+D.prototype.d = function() { return this._d; };
+inherits(D, C);
+
+assert.strictEqual(D.super_, C);
+
+const d = new D();
+assert.strictEqual(d.c(), 'c');
+assert.strictEqual(d.d(), 'd');
+assert.strictEqual(d.constructor, D);
+
+// ES6 classes can inherit from a constructor function
+class E {
+  constructor() {
+    D.call(this);
+    this._e = 'e';
+  }
+  e() { return this._e; }
+}
+inherits(E, D);
+
+assert.strictEqual(E.super_, D);
+
+const e = new E();
+assert.strictEqual(e.getValue(), 'abc');
+assert.strictEqual(e.d(), 'd');
+assert.strictEqual(e.e(), 'e');
+assert.strictEqual(e.constructor, E);
+
+// Should throw with invalid arguments
+assert.throws(() => {
+  inherits(A, {});
+}, {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError',
+  message: 'The "superCtor.prototype" property must be of type object. ' +
+           'Received undefined'
+});
+
+assert.throws(() => {
+  inherits(A, null);
+}, {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError',
+  message: 'The "superCtor" argument must be of type function. ' +
+           'Received null'
+});
+
+assert.throws(() => {
+  inherits(null, A);
+}, {
+  code: 'ERR_INVALID_ARG_TYPE',
+  name: 'TypeError',
+  message: 'The "ctor" argument must be of type function. Received null'
+});