1 files changed, 83 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/FinalizationRegistry/shell.js b/js/src/tests/test262/built-ins/FinalizationRegistry/shell.js
new file mode 100644
index 0000000000..b4d29ea4e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/FinalizationRegistry/shell.js
@@ -0,0 +1,83 @@
+// GENERATED, DO NOT EDIT
+// file: async-gc.js
+// Copyright (C) 2019  Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Collection of functions used to capture references cleanup from garbage collectors
+features: [FinalizationRegistry.prototype.cleanupSome, FinalizationRegistry, Symbol, async-functions]
+flags: [non-deterministic]
+defines: [asyncGC, asyncGCDeref, resolveAsyncGC]
+---*/
+
+function asyncGC(...targets) {
+  var finalizationRegistry = new FinalizationRegistry(() => {});
+  var length = targets.length;
+
+  for (let target of targets) {
+    finalizationRegistry.register(target, 'target');
+    target = null;
+  }
+
+  targets = null;
+
+  return Promise.resolve('tick').then(() => asyncGCDeref()).then(() => {
+    var names = [];
+
+    // consume iterator to capture names
+    finalizationRegistry.cleanupSome(name => { names.push(name); });
+
+    if (!names || names.length != length) {
+      throw asyncGC.notCollected;
+    }
+  });
+}
+
+asyncGC.notCollected = Symbol('Object was not collected');
+
+async function asyncGCDeref() {
+  var trigger;
+
+  // TODO: Remove this when $262.clearKeptObject becomes documented and required
+  if ($262.clearKeptObjects) {
+    trigger = $262.clearKeptObjects();
+  }
+
+  await $262.gc();
+
+  return Promise.resolve(trigger);
+}
+
+function resolveAsyncGC(err) {
+  if (err === asyncGC.notCollected) {
+    // Do not fail as GC can't provide necessary resources.
+    $DONE();
+    return;
+  }
+
+  $DONE(err);
+}
+
+// file: isConstructor.js
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: |
+    Test if a given function is a constructor function.
+defines: [isConstructor]
+features: [Reflect.construct]
+---*/
+
+function isConstructor(f) {
+    if (typeof f !== "function") {
+      throw new Test262Error("isConstructor invoked with a non-function value");
+    }
+
+    try {
+        Reflect.construct(function(){}, [], f);
+    } catch (e) {
+        return false;
+    }
+    return true;
+}