| assert = { |
| sameValue: function (input, expected, message) { |
| if (input !== expected) |
| throw new Error(message); |
| } |
| }; |
| |
| function testEquals(x, y, z, message) { |
| assert.sameValue(x == y, z, message); |
| assert.sameValue(y == x, z, message); |
| } |
| |
| testEquals(Object(2n), 1n, false, "ToPrimitive: unbox object with internal slot"); |
| |
| let o = { |
| [Symbol.toPrimitive]: function() { |
| return 1n; |
| } |
| }; |
| testEquals(o, 1n, true, "ToPrimitive: @@toPrimitive"); |
| |
| o = { |
| valueOf: function() { |
| return 2n; |
| } |
| }; |
| testEquals(o, 2n, true, "ToPrimitive: valueOf"); |
| |
| o = { |
| toString: function() { |
| return 2n; |
| } |
| } |
| testEquals(o, 1n, false, "ToPrimitive: toString"); |
| |