82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
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// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --harmony-bigint --no-opt
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'use strict'
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// Without .toJSON method.
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assertEquals(undefined, BigInt.prototype.toJSON);
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assertThrows(() => JSON.stringify(42n), TypeError);
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assertThrows(() => JSON.stringify(Object(42n)), TypeError);
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// With .toJSON method that returns a string.
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BigInt.prototype.toJSON = function() {
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assertEquals("bigint", typeof this);
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return String(this);
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}
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assertEquals("\"42\"", JSON.stringify(42n));
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BigInt.prototype.toJSON = function() {
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assertEquals("object", typeof this);
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return String(this);
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}
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assertEquals("\"42\"", JSON.stringify(Object(42n)));
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// With .toJSON method that returns a BigInt primitive.
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BigInt.prototype.toJSON = function() {return this};
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assertThrows(() => JSON.stringify(42n), TypeError);
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assertThrows(() => JSON.stringify(Object(42n)), TypeError);
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// With .toJSON method that returns a BigInt object.
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BigInt.prototype.toJSON = function() {return Object(this)};
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assertThrows(() => JSON.stringify(42n), TypeError);
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assertThrows(() => JSON.stringify(Object(42n)), TypeError);
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// Without .toJSON method but with a replacer returning a string.
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delete BigInt.prototype.toJSON;
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let replacer;
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replacer = function(k, v) {
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assertEquals("bigint", typeof v);
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assertTrue(42n == v);
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return "43";
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}
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assertEquals("\"43\"", JSON.stringify(42n, replacer));
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replacer = function(k, v) {
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assertEquals("object", typeof v);
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assertTrue(42n == v);
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return "43";
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}
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assertEquals("\"43\"", JSON.stringify(Object(42n), replacer));
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// Without .toJSON method but with a replacer returning a BigInt primitive.
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assertEquals(undefined, BigInt.prototype.toJSON);
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replacer = () => 43n;
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assertThrows(() => JSON.stringify(42n, replacer), TypeError);
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assertThrows(() => JSON.stringify(Object(42n), replacer), TypeError);
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// Without .toJSON method but with a replacer returning a BigInt object.
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assertEquals(undefined, BigInt.prototype.toJSON);
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replacer = () => Object(43n);
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assertThrows(() => JSON.stringify(42n, replacer), TypeError);
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assertThrows(() => JSON.stringify(Object(42n), replacer), TypeError);
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