JSTests/test262/test/language/expressions/equals/bigint-and-object.js

// Copyright (C) 2017 Josh Wolfe. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Non-strict equality comparison of BigInt values and non-primitive objects
esid: sec-abstract-equality-comparison
info: |
  10. If Type(x) is either String, Number, BigInt, or Symbol and Type(y) is Object, return the result of the comparison x == ? ToPrimitive(y).
  11. If Type(x) is Object and Type(y) is either String, Number, BigInt, or Symbol, return the result of the comparison ? ToPrimitive(x) == y.

  then after the recursion:

  1. If Type(x) is the same as Type(y), then
    a. Return the result of performing Strict Equality Comparison x === y.
  ...
  6. If Type(x) is BigInt and Type(y) is String,
    a. Let n be StringToBigInt(y).
    b. If n is NaN, return false.
    c. Return the result of x == n.
  7. If Type(x) is String and Type(y) is BigInt, return the result of y == x.

features: [BigInt]
---*/
assert.sameValue(0n == Object(0n), true, 'The result of (0n == Object(0n)) is true');
assert.sameValue(Object(0n) == 0n, true, 'The result of (Object(0n) == 0n) is true');
assert.sameValue(0n == Object(1n), false, 'The result of (0n == Object(1n)) is false');
assert.sameValue(Object(1n) == 0n, false, 'The result of (Object(1n) == 0n) is false');
assert.sameValue(1n == Object(0n), false, 'The result of (1n == Object(0n)) is false');
assert.sameValue(Object(0n) == 1n, false, 'The result of (Object(0n) == 1n) is false');
assert.sameValue(1n == Object(1n), true, 'The result of (1n == Object(1n)) is true');
assert.sameValue(Object(1n) == 1n, true, 'The result of (Object(1n) == 1n) is true');
assert.sameValue(2n == Object(0n), false, 'The result of (2n == Object(0n)) is false');
assert.sameValue(Object(0n) == 2n, false, 'The result of (Object(0n) == 2n) is false');
assert.sameValue(2n == Object(1n), false, 'The result of (2n == Object(1n)) is false');
assert.sameValue(Object(1n) == 2n, false, 'The result of (Object(1n) == 2n) is false');
assert.sameValue(2n == Object(2n), true, 'The result of (2n == Object(2n)) is true');
assert.sameValue(Object(2n) == 2n, true, 'The result of (Object(2n) == 2n) is true');
assert.sameValue(0n == {}, false, 'The result of (0n == {}) is false');
assert.sameValue({} == 0n, false, 'The result of (({}) == 0n) is false');

assert.sameValue(0n == {
  valueOf: function() {
    return 0n;
  }
}, true, 'The result of (0n == {valueOf: function() {return 0n;}}) is true');

assert.sameValue({
  valueOf: function() {
    return 0n;
  }
} == 0n, true, 'The result of (({valueOf: function() {return 0n;}}) == 0n) is true');

assert.sameValue(0n == {
  valueOf: function() {
    return 1n;
  }
}, false, 'The result of (0n == {valueOf: function() {return 1n;}}) is false');

assert.sameValue({
  valueOf: function() {
    return 1n;
  }
} == 0n, false, 'The result of (({valueOf: function() {return 1n;}}) == 0n) is false');

assert.sameValue(0n == {
  toString: function() {
    return '0';
  }
}, true, 'The result of (0n == {toString: function() {return "0";}}) is true');

assert.sameValue({
  toString: function() {
    return '0';
  }
} == 0n, true, 'The result of (({toString: function() {return "0";}}) == 0n) is true');

assert.sameValue(0n == {
  toString: function() {
    return '1';
  }
}, false, 'The result of (0n == {toString: function() {return "1";}}) is false');

assert.sameValue({
  toString: function() {
    return '1';
  }
} == 0n, false, 'The result of (({toString: function() {return "1";}}) == 0n) is false');

assert.sameValue(900719925474099101n == {
  valueOf: function() {
    return 900719925474099101n;
  }
}, true, 'The result of (900719925474099101n == {valueOf: function() {return 900719925474099101n;}}) is true');

assert.sameValue({
  valueOf: function() {
    return 900719925474099101n;
  }
} == 900719925474099101n, true, 'The result of (({valueOf: function() {return 900719925474099101n;}}) == 900719925474099101n) is true');

assert.sameValue(900719925474099101n == {
  valueOf: function() {
    return 900719925474099102n;
  }
}, false, 'The result of (900719925474099101n == {valueOf: function() {return 900719925474099102n;}}) is false');

assert.sameValue({
  valueOf: function() {
    return 900719925474099102n;
  }
} == 900719925474099101n, false, 'The result of (({valueOf: function() {return 900719925474099102n;}}) == 900719925474099101n) is false');

assert.sameValue(900719925474099101n == {
  toString: function() {
    return '900719925474099101';
  }
}, true, 'The result of (900719925474099101n == {toString: function() {return "900719925474099101";}}) is true');

assert.sameValue({
  toString: function() {
    return '900719925474099101';
  }
} == 900719925474099101n, true, 'The result of (({toString: function() {return "900719925474099101";}}) == 900719925474099101n) is true');

assert.sameValue(900719925474099101n == {
  toString: function() {
    return '900719925474099102';
  }
}, false, 'The result of (900719925474099101n == {toString: function() {return "900719925474099102";}}) is false');

assert.sameValue({
  toString: function() {
    return '900719925474099102';
  }
} == 900719925474099101n, false, 'The result of (({toString: function() {return "900719925474099102";}}) == 900719925474099101n) is false');