| // Copyright (C) 2017 Josh Wolfe. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| description: String.prototype.indexOf type coercion for position parameter |
| esid: sec-string.prototype.indexof |
| info: | |
| String.prototype.indexOf ( searchString [ , position ] ) |
| |
| 4. Let pos be ? ToInteger(position). |
| features: [BigInt, Symbol.toPrimitive, computed-property-names] |
| ---*/ |
| |
| assert.throws(TypeError, function() { |
| "".indexOf("", 0n); |
| }, "ToInteger: BigInt => TypeError"); |
| assert.throws(TypeError, function() { |
| "".indexOf("", Object(0n)); |
| }, "ToInteger: unbox object with internal slot => BigInt => TypeError"); |
| assert.throws(TypeError, function() { |
| "".indexOf("", { |
| [Symbol.toPrimitive]: function() { |
| return 0n; |
| } |
| }); |
| }, "ToInteger: @@toPrimitive => BigInt => TypeError"); |
| assert.throws(TypeError, function() { |
| "".indexOf("", { |
| valueOf: function() { |
| return 0n; |
| } |
| }); |
| }, "ToInteger: valueOf => BigInt => TypeError"); |
| assert.throws(TypeError, function() { |
| "".indexOf("", { |
| toString: function() { |
| return 0n; |
| } |
| }); |
| }, "ToInteger: toString => BigInt => TypeError"); |