gecko/dom/imptests/html/js/builtins/test_Array.DefineOwnProperty.html

25 lines
667 B
HTML

<!doctype html>
<title>Array.[[DefineOwnProperty]]</title>
<link rel=author href=mailto:Ms2ger@gmail.com title=Ms2ger>
<link rel=help href=http://es5.github.com/#x15.4.5.1>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
test(function() {
var arr = new Array;
assert_equals(arr.length, 0);
var called = 0;
Object.defineProperty(arr, 0, { get: function() { ++called; return 7 } });
assert_equals(arr.length, 1);
assert_equals(called, 0);
assert_equals(arr[0], 7);
assert_equals(called, 1);
assert_equals(String(arr), "7");
assert_equals(called, 2);
});
</script>