1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/return-undefined.js b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/return-undefined.js
new file mode 100644
index 0000000000..6a5ff5a6e5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/FinalizationRegistry/prototype/cleanupSome/return-undefined.js
@@ -0,0 +1,44 @@
+// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) -- 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: Return undefined regardless the result of CleanupFinalizationRegistry
+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, arrow-function, async-functions, async-iteration, class]
+---*/
+
+var fn = function() {};
+var cb = function() {};
+var poisoned = function() { throw new Test262Error(); };
+var finalizationRegistry = new FinalizationRegistry(fn);
+
+assert.sameValue(finalizationRegistry.cleanupSome(cb), undefined, 'regular callback');
+assert.sameValue(finalizationRegistry.cleanupSome(fn), undefined, 'regular callback, same FG cleanup function');
+
+assert.sameValue(finalizationRegistry.cleanupSome(() => {}), undefined, 'arrow function');
+assert.sameValue(finalizationRegistry.cleanupSome(finalizationRegistry.cleanupSome), undefined, 'cleanupSome itself');
+assert.sameValue(finalizationRegistry.cleanupSome(poisoned), undefined, 'poisoned');
+assert.sameValue(finalizationRegistry.cleanupSome(class {}), undefined, 'class expression');
+assert.sameValue(finalizationRegistry.cleanupSome(async function() {}), undefined, 'async function');
+assert.sameValue(finalizationRegistry.cleanupSome(function *() {}), undefined, 'generator');
+assert.sameValue(finalizationRegistry.cleanupSome(async function *() {}), undefined, 'async generator');
+
+assert.sameValue(finalizationRegistry.cleanupSome(), undefined, 'undefined, implicit');
+assert.sameValue(finalizationRegistry.cleanupSome(undefined), undefined, 'undefined, explicit');
+
+var poisonedFg = new FinalizationRegistry(poisoned);
+
+assert.sameValue(poisonedFg.cleanupSome(cb), undefined, 'regular callback on poisoned FG cleanup callback');
+assert.sameValue(poisonedFg.cleanupSome(poisoned), undefined, 'poisoned callback on poisoned FG cleanup callback');
+
+reportCompare(0, 0);