1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/cleanup-prevented-with-reference.js b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/cleanup-prevented-with-reference.js
new file mode 100644
index 0000000000..d8c23a7d1e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/cleanup-prevented-with-reference.js
@@ -0,0 +1,48 @@
+// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) async -- FinalizationRegistry is not enabled unconditionally
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-finalization-registry.prototype.cleanupSome
+description: Cleanup might be prevented with a reference usage;
+info: |
+  FinalizationRegistry.prototype.cleanupSome ( [ callback ] )
+
+  1. Let finalizationRegistry be the this value.
+  2. If Type(finalizationRegistry) is not Object, throw a TypeError exception.
+  3. If finalizationRegistry does not have a [[Cells]] internal slot, throw a TypeError exception.
+  4. If callback is not undefined and IsCallable(callback) is false, throw a TypeError exception.
+  5. Perform ? CleanupFinalizationRegistry(finalizationRegistry, callback).
+  6. Return undefined.
+features: [FinalizationRegistry.prototype.cleanupSome, FinalizationRegistry, host-gc-required]
+includes: [async-gc.js]
+flags: [async, non-deterministic]
+---*/
+
+var holdingsList = [];
+function cb(holding) {
+  holdingsList.push(holding);
+};
+var finalizationRegistry = new FinalizationRegistry(function() {});
+
+var referenced = {};
+
+function emptyCells() {
+  var target = {};
+  finalizationRegistry.register(target, 'target!');
+  finalizationRegistry.register(referenced, 'referenced');
+
+  var prom = asyncGC(target);
+  target = null;
+
+  return prom;
+}
+
+emptyCells().then(function() {
+  finalizationRegistry.cleanupSome(cb);
+
+  assert.sameValue(holdingsList.length, 1);
+  assert.sameValue(holdingsList[0], 'target!');
+
+  assert.sameValue(typeof referenced, 'object', 'referenced preserved');
+}).then($DONE, resolveAsyncGC);