JSTests/test262/test/built-ins/TypedArray/prototype/indexOf/BigInt/search-found-returns-index.js

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.indexof
description: returns index for the first found element
info: |
  22.2.3.13 %TypedArray%.prototype.indexOf (searchElement [ , fromIndex ] )

  %TypedArray%.prototype.indexOf is a distinct function that implements the same
  algorithm as Array.prototype.indexOf as defined in 22.1.3.12 except that the
  this object's [[ArrayLength]] internal slot is accessed in place of performing
  a [[Get]] of "length".

  22.1.3.12 Array.prototype.indexOf ( searchElement [ , fromIndex ] )

  ...
  6. If n ≥ 0, then
    a. If n is -0, let k be +0; else let k be n.
  7. Else n < 0,
    a. Let k be len + n.
    b. If k < 0, let k be 0.
  8. Repeat, while k < len
    a. Let kPresent be ? HasProperty(O, ! ToString(k)).
    b. If kPresent is true, then
      i. Let elementK be ? Get(O, ! ToString(k)).
      ii. Let same be the result of performing Strict Equality Comparison
      searchElement === elementK.
      iii. If same is true, return k.
  ...
includes: [testBigIntTypedArray.js]
features: [BigInt, TypedArray]
---*/

testWithBigIntTypedArrayConstructors(function(TA) {
  var sample = new TA([42n, 43n, 42n, 41n]);
  assert.sameValue(sample.indexOf(42n), 0, "indexOf(42)");
  assert.sameValue(sample.indexOf(43n), 1, "indexOf(43)");
  assert.sameValue(sample.indexOf(43n, 1), 1, "indexOf(43, 1)");
  assert.sameValue(sample.indexOf(42n, 1), 2, "indexOf(42, 1)");
  assert.sameValue(sample.indexOf(42n, 2), 2, "indexOf(42, 2)");

  assert.sameValue(sample.indexOf(42n, -4), 0, "indexOf(42, -4)");
  assert.sameValue(sample.indexOf(42n, -3), 2, "indexOf(42, -3)");
  assert.sameValue(sample.indexOf(42n, -2), 2, "indexOf(42, -2)");
  assert.sameValue(sample.indexOf(42n, -5), 0, "indexOf(42, -5)");
});