mirror of https://github.com/tc39/test262.git
34 lines
1.5 KiB
JavaScript
34 lines
1.5 KiB
JavaScript
// Copyright (C) 2017 Josh Wolfe. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: Unary minus for BigInt object wrappers
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esid: sec-unary-minus-operator-runtime-semantics-evaluation
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info: |
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Runtime Semantics: Evaluation
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UnaryExpression : - UnaryExpression
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1. Let expr be the result of evaluating UnaryExpression.
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2. Let oldValue be ? ToNumeric(? GetValue(expr)).
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3. Let T be Type(oldValue).
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4. Return ? T::unaryMinus(oldValue).
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features: [BigInt, Symbol.toPrimitive]
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---*/
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assert.sameValue(-Object(1n), -1n, "-Object(1n) === -1n");
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assert.notSameValue(-Object(1n), 1n, "-Object(1n) !== 1n");
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assert.notSameValue(-Object(1n), Object(-1n), "-Object(1n) !== Object(-1n)");
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assert.sameValue(-Object(-1n), 1n, "-Object(-1n) === 1n");
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assert.notSameValue(-Object(-1n), -1n, "-Object(-1n) !== -1n");
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assert.notSameValue(-Object(-1n), Object(1n), "-Object(-1n) !== Object(1n)");
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assert.sameValue(
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-{[Symbol.toPrimitive]: function() { return 1n; }, valueOf: function() { $ERROR(); }, toString: function() { $ERROR(); }}, -1n,
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"-{[Symbol.toPrimitive]: function() { return 1n; }, valueOf: function() { $ERROR(); }, toString: function() { $ERROR(); }} === -1n");
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assert.sameValue(
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-{valueOf: function() { return 1n; }, toString: function() { $ERROR(); }}, -1n,
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"-{valueOf: function() { return 1n; }, toString: function() { $ERROR(); }} === -1n");
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assert.sameValue(
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-{toString: function() { return 1n; }}, -1n,
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"-{toString: function() { return 1n; }} === -1n");
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