// Copyright (C) 2017 Josh Wolfe. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: Unary minus for BigInt object wrappers
esid: sec-unary-minus-operator-runtime-semantics-evaluation
info: |
  Runtime Semantics: Evaluation
  UnaryExpression : - UnaryExpression

  1. Let expr be the result of evaluating UnaryExpression.
  2. Let oldValue be ? ToNumeric(? GetValue(expr)).
  3. Let T be Type(oldValue).
  4. Return ? T::unaryMinus(oldValue).

features: [BigInt, Symbol.toPrimitive]
---*/

assert.sameValue(-Object(1n), -1n, "-Object(1n) === -1n");
assert.notSameValue(-Object(1n), 1n, "-Object(1n) !== 1n");
assert.notSameValue(-Object(1n), Object(-1n), "-Object(1n) !== Object(-1n)");
assert.sameValue(-Object(-1n), 1n, "-Object(-1n) === 1n");
assert.notSameValue(-Object(-1n), -1n, "-Object(-1n) !== -1n");
assert.notSameValue(-Object(-1n), Object(1n), "-Object(-1n) !== Object(1n)");
assert.sameValue(
  -{[Symbol.toPrimitive]: function() { return 1n; }, valueOf: function() { $ERROR(); }, toString: function() { $ERROR(); }}, -1n,
  "-{[Symbol.toPrimitive]: function() { return 1n; }, valueOf: function() { $ERROR(); }, toString: function() { $ERROR(); }} === -1n");
assert.sameValue(
  -{valueOf: function() { return 1n; }, toString: function() { $ERROR(); }}, -1n,
  "-{valueOf: function() { return 1n; }, toString: function() { $ERROR(); }} === -1n");
assert.sameValue(
  -{toString: function() { return 1n; }}, -1n,
  "-{toString: function() { return 1n; }} === -1n");