зеркало из https://github.com/mozilla/gecko-dev.git
73 строки
2.4 KiB
HTML
73 строки
2.4 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>IndexedDB: BigInt keys and values</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support.js"></script>
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<script>
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// BigInt and BigInt objects are supported in serialization, per
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// https://github.com/whatwg/html/pull/3480
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// This support allows them to be used as IndexedDB values.
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function value_test(value, predicate, name) {
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async_test(t => {
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t.step(function() {
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assert_true(predicate(value),
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"Predicate should return true for the initial value.");
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});
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createdb(t).onupgradeneeded = t.step_func(e => {
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e.target.result
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.createObjectStore("store")
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.add(value, 1);
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e.target.onsuccess = t.step_func(e => {
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e.target.result
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.transaction("store")
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.objectStore("store")
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.get(1)
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.onsuccess = t.step_func(e =>
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{
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assert_true(predicate(e.target.result),
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"Predicate should return true for the deserialized result.");
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t.done();
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});
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});
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});
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}, "BigInts as values in IndexedDB - " + name);
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}
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value_test(1n,
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x => x === 1n,
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"primitive BigInt");
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value_test(Object(1n),
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x => typeof x === 'object' &&
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x instanceof BigInt &&
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x.valueOf() === 1n,
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"BigInt object");
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value_test({val: 1n},
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x => x.val === 1n,
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"primitive BigInt inside object");
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value_test({val: Object(1n)},
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x => x.val.valueOf() === 1n &&
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x.val instanceof BigInt &&
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x.val.valueOf() === 1n,
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"BigInt object inside object");
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// However, BigInt is not supported as an IndexedDB key; support
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// has been proposed in the following PR, but that change has not
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// landed at the time this patch was written
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// https://github.com/w3c/IndexedDB/pull/231
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function invalidKey(key, name) {
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test(t => {
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assert_throws("DataError", () => indexedDB.cmp(0, key));
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}, "BigInts as keys in IndexedDB - " + name);
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}
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invalidKey(1n, "primitive BigInt");
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// Still an error even if the IndexedDB patch lands
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invalidKey(Object(1n), "BigInt object");
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</script>
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