--- /dev/null
+// Taken from: https://github.com/mathiasbynens/String.prototype.codePointAt
+// /blob/master/tests/tests.js
+
+'use strict';
+
+module.exports = function (t, a) {
+ a(t.length, 1, "Length");
+
+ // String that starts with a BMP symbol
+ a(t.call('abc\uD834\uDF06def', ''), 0x61);
+ a(t.call('abc\uD834\uDF06def', '_'), 0x61);
+ a(t.call('abc\uD834\uDF06def'), 0x61);
+ a(t.call('abc\uD834\uDF06def', -Infinity), undefined);
+ a(t.call('abc\uD834\uDF06def', -1), undefined);
+ a(t.call('abc\uD834\uDF06def', -0), 0x61);
+ a(t.call('abc\uD834\uDF06def', 0), 0x61);
+ a(t.call('abc\uD834\uDF06def', 3), 0x1D306);
+ a(t.call('abc\uD834\uDF06def', 4), 0xDF06);
+ a(t.call('abc\uD834\uDF06def', 5), 0x64);
+ a(t.call('abc\uD834\uDF06def', 42), undefined);
+ a(t.call('abc\uD834\uDF06def', Infinity), undefined);
+ a(t.call('abc\uD834\uDF06def', Infinity), undefined);
+ a(t.call('abc\uD834\uDF06def', NaN), 0x61);
+ a(t.call('abc\uD834\uDF06def', false), 0x61);
+ a(t.call('abc\uD834\uDF06def', null), 0x61);
+ a(t.call('abc\uD834\uDF06def', undefined), 0x61);
+
+ // String that starts with an astral symbol
+ a(t.call('\uD834\uDF06def', ''), 0x1D306);
+ a(t.call('\uD834\uDF06def', '1'), 0xDF06);
+ a(t.call('\uD834\uDF06def', '_'), 0x1D306);
+ a(t.call('\uD834\uDF06def'), 0x1D306);
+ a(t.call('\uD834\uDF06def', -1), undefined);
+ a(t.call('\uD834\uDF06def', -0), 0x1D306);
+ a(t.call('\uD834\uDF06def', 0), 0x1D306);
+ a(t.call('\uD834\uDF06def', 1), 0xDF06);
+ a(t.call('\uD834\uDF06def', 42), undefined);
+ a(t.call('\uD834\uDF06def', false), 0x1D306);
+ a(t.call('\uD834\uDF06def', null), 0x1D306);
+ a(t.call('\uD834\uDF06def', undefined), 0x1D306);
+
+ // Lone high surrogates
+ a(t.call('\uD834abc', ''), 0xD834);
+ a(t.call('\uD834abc', '_'), 0xD834);
+ a(t.call('\uD834abc'), 0xD834);
+ a(t.call('\uD834abc', -1), undefined);
+ a(t.call('\uD834abc', -0), 0xD834);
+ a(t.call('\uD834abc', 0), 0xD834);
+ a(t.call('\uD834abc', false), 0xD834);
+ a(t.call('\uD834abc', NaN), 0xD834);
+ a(t.call('\uD834abc', null), 0xD834);
+ a(t.call('\uD834abc', undefined), 0xD834);
+
+ // Lone low surrogates
+ a(t.call('\uDF06abc', ''), 0xDF06);
+ a(t.call('\uDF06abc', '_'), 0xDF06);
+ a(t.call('\uDF06abc'), 0xDF06);
+ a(t.call('\uDF06abc', -1), undefined);
+ a(t.call('\uDF06abc', -0), 0xDF06);
+ a(t.call('\uDF06abc', 0), 0xDF06);
+ a(t.call('\uDF06abc', false), 0xDF06);
+ a(t.call('\uDF06abc', NaN), 0xDF06);
+ a(t.call('\uDF06abc', null), 0xDF06);
+ a(t.call('\uDF06abc', undefined), 0xDF06);
+
+ a.throws(function () { t.call(undefined); }, TypeError);
+ a.throws(function () { t.call(undefined, 4); }, TypeError);
+ a.throws(function () { t.call(null); }, TypeError);
+ a.throws(function () { t.call(null, 4); }, TypeError);
+ a(t.call(42, 0), 0x34);
+ a(t.call(42, 1), 0x32);
+ a(t.call({ toString: function () { return 'abc'; } }, 2), 0x63);
+
+ a.throws(function () { t.apply(undefined); }, TypeError);
+ a.throws(function () { t.apply(undefined, [4]); }, TypeError);
+ a.throws(function () { t.apply(null); }, TypeError);
+ a.throws(function () { t.apply(null, [4]); }, TypeError);
+ a(t.apply(42, [0]), 0x34);
+ a(t.apply(42, [1]), 0x32);
+ a(t.apply({ toString: function () { return 'abc'; } }, [2]), 0x63);
+};