1 files changed, 218 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-util-promisify.js b/tests/node_compat/test/parallel/test-util-promisify.js
new file mode 100644
index 000000000..8046f6fb8
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-util-promisify.js
@@ -0,0 +1,218 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 16.13.0
+// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
+
+'use strict';
+// Flags: --expose-internals
+const common = require('../common');
+const assert = require('assert');
+const fs = require('fs');
+const vm = require('vm');
+const { promisify } = require('util');
+const { customPromisifyArgs } = require('internal/util');
+
+const stat = promisify(fs.stat);
+
+// TODO(wafuwafu13): Fix
+// {
+//   const promise = stat(__filename);
+//   assert(promise instanceof Promise);
+//   promise.then(common.mustCall((value) => {
+//     assert.deepStrictEqual(value, fs.statSync(__filename));
+//   }));
+// }
+
+{
+  const promise = stat('/dontexist');
+  promise.catch(common.mustCall((error) => {
+    assert(error.message.includes('ENOENT: no such file or directory, stat'));
+  }));
+}
+
+{
+  function fn() {}
+
+  function promisifedFn() {}
+  fn[promisify.custom] = promisifedFn;
+  assert.strictEqual(promisify(fn), promisifedFn);
+  assert.strictEqual(promisify(promisify(fn)), promisifedFn);
+}
+
+{
+  function fn() {}
+
+  function promisifiedFn() {}
+
+  // util.promisify.custom is a shared symbol which can be accessed
+  // as `Symbol.for("nodejs.util.promisify.custom")`.
+  const kCustomPromisifiedSymbol = Symbol.for('nodejs.util.promisify.custom');
+  fn[kCustomPromisifiedSymbol] = promisifiedFn;
+
+  assert.strictEqual(kCustomPromisifiedSymbol, promisify.custom);
+  assert.strictEqual(promisify(fn), promisifiedFn);
+  assert.strictEqual(promisify(promisify(fn)), promisifiedFn);
+}
+
+{
+  function fn() {}
+  fn[promisify.custom] = 42;
+  assert.throws(
+    () => promisify(fn),
+    { code: 'ERR_INVALID_ARG_TYPE', name: 'TypeError' }
+  );
+}
+
+// TODO(wafuwafu13): Fix
+// {
+//   const firstValue = 5;
+//   const secondValue = 17;
+
+//   function fn(callback) {
+//     callback(null, firstValue, secondValue);
+//   }
+
+//   fn[customPromisifyArgs] = ['first', 'second'];
+
+//   promisify(fn)().then(common.mustCall((obj) => {
+//     assert.deepStrictEqual(obj, { first: firstValue, second: secondValue });
+//   }));
+// }
+
+{
+  const fn = vm.runInNewContext('(function() {})');
+  assert.notStrictEqual(Object.getPrototypeOf(promisify(fn)),
+                        Function.prototype);
+}
+
+{
+  function fn(callback) {
+    callback(null, 'foo', 'bar');
+  }
+  promisify(fn)().then(common.mustCall((value) => {
+    assert.deepStrictEqual(value, 'foo');
+  }));
+}
+
+{
+  function fn(callback) {
+    callback(null);
+  }
+  promisify(fn)().then(common.mustCall((value) => {
+    assert.strictEqual(value, undefined);
+  }));
+}
+
+{
+  function fn(callback) {
+    callback();
+  }
+  promisify(fn)().then(common.mustCall((value) => {
+    assert.strictEqual(value, undefined);
+  }));
+}
+
+{
+  function fn(err, val, callback) {
+    callback(err, val);
+  }
+  promisify(fn)(null, 42).then(common.mustCall((value) => {
+    assert.strictEqual(value, 42);
+  }));
+}
+
+{
+  function fn(err, val, callback) {
+    callback(err, val);
+  }
+  promisify(fn)(new Error('oops'), null).catch(common.mustCall((err) => {
+    assert.strictEqual(err.message, 'oops');
+  }));
+}
+
+{
+  function fn(err, val, callback) {
+    callback(err, val);
+  }
+
+  (async () => {
+    const value = await promisify(fn)(null, 42);
+    assert.strictEqual(value, 42);
+  })().then(common.mustCall());
+}
+
+{
+  const o = {};
+  const fn = promisify(function(cb) {
+
+    cb(null, this === o);
+  });
+
+  o.fn = fn;
+
+  o.fn().then(common.mustCall((val) => assert(val)));
+}
+
+{
+  const err = new Error('Should not have called the callback with the error.');
+  const stack = err.stack;
+
+  const fn = promisify(function(cb) {
+    cb(null);
+    cb(err);
+  });
+
+  (async () => {
+    await fn();
+    await Promise.resolve();
+    return assert.strictEqual(stack, err.stack);
+  })().then(common.mustCall());
+}
+
+{
+  function c() { }
+  const a = promisify(function() { });
+  const b = promisify(a);
+  assert.notStrictEqual(c, a);
+  assert.strictEqual(a, b);
+}
+
+{
+  let errToThrow;
+  const thrower = promisify(function(a, b, c, cb) {
+    errToThrow = new Error();
+    throw errToThrow;
+  });
+  thrower(1, 2, 3)
+    .then(assert.fail)
+    .then(assert.fail, (e) => assert.strictEqual(e, errToThrow));
+}
+
+{
+  const err = new Error();
+
+  const a = promisify((cb) => cb(err))();
+  const b = promisify(() => { throw err; })();
+
+  Promise.all([
+    a.then(assert.fail, function(e) {
+      assert.strictEqual(err, e);
+    }),
+    b.then(assert.fail, function(e) {
+      assert.strictEqual(err, e);
+    }),
+  ]);
+}
+
+[undefined, null, true, 0, 'str', {}, [], Symbol()].forEach((input) => {
+  assert.throws(
+    () => promisify(input),
+    {
+      code: 'ERR_INVALID_ARG_TYPE',
+      name: 'TypeError',
+      message: 'The "original" argument must be of type function.' +
+               common.invalidArgTypeHelper(input)
+    });
+});