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Add Object.prototype.toString tests for BigInt.

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Reported by André Bargull in
<https://bugzilla.mozilla.org/show_bug.cgi?id=1464758>.
This commit is contained in:
Robin Templeton 2018-05-31 14:57:34 -04:00
parent 92003a3e52
commit 904d90d0d6
2 changed files with 63 additions and 0 deletions
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44
test/built-ins/Object/prototype/toString/symbol-tag-non-str-bigint.js vendored Normal file
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// Copyright (C) 2018 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object.prototype.tostring
description: Non-string values of `@@toStringTag` property are ignored
info: |
14. Else, let builtinTag be "Object".
15. Let tag be ? Get(O, @@toStringTag).
16. If Type(tag) is not String, let tag be builtinTag.
17. Return the string-concatenation of "[object ", tag, and "]".
features: [BigInt, Symbol.toStringTag]
---*/
let custom1 = BigInt(0);
let custom2 = Object(BigInt(0));
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: undefined});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: null});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: Symbol.toStringTag});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: 86});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: new String('test262')});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: {}});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: _ => 'str'});
assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');

19
test/built-ins/Object/prototype/toString/symbol-tag-override-bigint.js vendored Normal file
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// Copyright (C) 2018 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object.prototype.tostring
description: String values of `@@toStringTag` property override built-in tags
info: |
15. Let tag be ? Get(O, @@toStringTag).
16. If Type(tag) is not String, let tag be builtinTag.
17. Return the string-concatenation of "[object ", tag, and "]".
features: [BigInt, Symbol.toStringTag]
---*/
let custom1 = BigInt(0);
let custom2 = Object(BigInt(0));
Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: 'test262'});
assert.sameValue(Object.prototype.toString.call(custom1), '[object test262]');
assert.sameValue(Object.prototype.toString.call(custom2), '[object test262]');