bindings-inject-values-bypass-chain.html

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- /IndexedDB/bindings-inject-values-bypass-chain.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>IndexedDB: ES bindings - Inject a key into a value - Values bypass chain</title>

<meta name="help"

href="https://w3c.github.io/IndexedDB/#inject-key-into-value-values-bypass-chain">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="resources/support-promises.js"></script>

<script>

promise_test(async t => {

  const db = await createDatabase(t, db => {

    db.createObjectStore('store', {autoIncrement: true, keyPath: 'a.b.c'});

});

  Object.prototype.a = {b: {c: 'on proto'}};

  t.add_cleanup(() => { delete Object.prototype.a; });

  const tx = db.transaction('store', 'readwrite', {durability: "relaxed"});

  tx.objectStore('store').put({});

  const result = await promiseForRequest(t, tx.objectStore('store').get(1));

  assert_true(result.hasOwnProperty('a'),

              'Result should have own-properties overriding prototype.');

  assert_true(result.a.hasOwnProperty('b'),

              'Result should have own-properties overriding prototype.');

  assert_true(result.a.b.hasOwnProperty('c'),

              'Result should have own-properties overriding prototype.');

  assert_equals(result.a.b.c, 1,

                'Own property should match primary key generator value');

  assert_equals(Object.prototype.a.b.c, 'on proto',

                'Prototype should not be modified');

}, 'Returning values to script should bypass prototype chain');

</script>