third_party/v8/test/mjsunit/indexed-value-properties.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// Test that the Number, String and Boolean prototypes are searched
// for indexed properties on value objects.

function return_one() { return 1; };

function test(value) {
  for (var i = 0; i < 10; i++) {
    assertEquals(0, (value)[0]);
    assertEquals(0, (value)["0"]);
    assertEquals(return_one, (value)[1]);
    assertEquals(return_one, (value)["1"]);
    assertEquals(1, (value)[1]());
    assertEquals(1, (value)["1"]());
  }
}

Number.prototype[0] = 0;
Number.prototype[1] = return_one;
test(0);
test(0.1);

String.prototype[0] = 0;
String.prototype[1] = return_one;
test("");

Boolean.prototype[0] = 0;
Boolean.prototype[1] = return_one;
test(true);
test(false);