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// See tests at https://github.com/mathiasbynens/String.prototype.at
'use strict';
module.exports = function (t, a) {
a(t.length, 1, "Length");
a.h1("BMP");
a(t.call('abc\uD834\uDF06def', -Infinity), '', "-Infinity");
a(t.call('abc\uD834\uDF06def', -1), '', "-1");
a(t.call('abc\uD834\uDF06def', -0), 'a', "-0");
a(t.call('abc\uD834\uDF06def', +0), 'a', "+0");
a(t.call('abc\uD834\uDF06def', 1), 'b', "1");
a(t.call('abc\uD834\uDF06def', 3), '\uD834\uDF06', "3");
a(t.call('abc\uD834\uDF06def', 4), '\uDF06', "4");
a(t.call('abc\uD834\uDF06def', 5), 'd', "5");
a(t.call('abc\uD834\uDF06def', 42), '', "42");
a(t.call('abc\uD834\uDF06def', +Infinity), '', "+Infinity");
a(t.call('abc\uD834\uDF06def', null), 'a', "null");
a(t.call('abc\uD834\uDF06def', undefined), 'a', "undefined");
a(t.call('abc\uD834\uDF06def'), 'a', "No argument");
a(t.call('abc\uD834\uDF06def', false), 'a', "false");
a(t.call('abc\uD834\uDF06def', NaN), 'a', "NaN");
a(t.call('abc\uD834\uDF06def', ''), 'a', "Empty string");
a(t.call('abc\uD834\uDF06def', '_'), 'a', "_");
a(t.call('abc\uD834\uDF06def', '1'), 'b', "'1'");
a(t.call('abc\uD834\uDF06def', []), 'a', "[]");
a(t.call('abc\uD834\uDF06def', {}), 'a', "{}");
a(t.call('abc\uD834\uDF06def', -0.9), 'a', "-0.9");
a(t.call('abc\uD834\uDF06def', 1.9), 'b', "1.9");
a(t.call('abc\uD834\uDF06def', 7.9), 'f', "7.9");
a(t.call('abc\uD834\uDF06def', Math.pow(2, 32)), '', "Big number");
a.h1("Astral symbol");
a(t.call('\uD834\uDF06def', -Infinity), '', "-Infinity");
a(t.call('\uD834\uDF06def', -1), '', "-1");
a(t.call('\uD834\uDF06def', -0), '\uD834\uDF06', "-0");
a(t.call('\uD834\uDF06def', +0), '\uD834\uDF06', "+0");
a(t.call('\uD834\uDF06def', 1), '\uDF06', "1");
a(t.call('\uD834\uDF06def', 2), 'd', "2");
a(t.call('\uD834\uDF06def', 3), 'e', "3");
a(t.call('\uD834\uDF06def', 4), 'f', "4");
a(t.call('\uD834\uDF06def', 42), '', "42");
a(t.call('\uD834\uDF06def', +Infinity), '', "+Infinity");
a(t.call('\uD834\uDF06def', null), '\uD834\uDF06', "null");
a(t.call('\uD834\uDF06def', undefined), '\uD834\uDF06', "undefined");
a(t.call('\uD834\uDF06def'), '\uD834\uDF06', "No arguments");
a(t.call('\uD834\uDF06def', false), '\uD834\uDF06', "false");
a(t.call('\uD834\uDF06def', NaN), '\uD834\uDF06', "NaN");
a(t.call('\uD834\uDF06def', ''), '\uD834\uDF06', "Empty string");
a(t.call('\uD834\uDF06def', '_'), '\uD834\uDF06', "_");
a(t.call('\uD834\uDF06def', '1'), '\uDF06', "'1'");
a.h1("Lone high surrogates");
a(t.call('\uD834abc', -Infinity), '', "-Infinity");
a(t.call('\uD834abc', -1), '', "-1");
a(t.call('\uD834abc', -0), '\uD834', "-0");
a(t.call('\uD834abc', +0), '\uD834', "+0");
a(t.call('\uD834abc', 1), 'a', "1");
a(t.call('\uD834abc', 42), '', "42");
a(t.call('\uD834abc', +Infinity), '', "Infinity");
a(t.call('\uD834abc', null), '\uD834', "null");
a(t.call('\uD834abc', undefined), '\uD834', "undefined");
a(t.call('\uD834abc'), '\uD834', "No arguments");
a(t.call('\uD834abc', false), '\uD834', "false");
a(t.call('\uD834abc', NaN), '\uD834', "NaN");
a(t.call('\uD834abc', ''), '\uD834', "Empty string");
a(t.call('\uD834abc', '_'), '\uD834', "_");
a(t.call('\uD834abc', '1'), 'a', "'a'");
a.h1("Lone low surrogates");
a(t.call('\uDF06abc', -Infinity), '', "-Infinity");
a(t.call('\uDF06abc', -1), '', "-1");
a(t.call('\uDF06abc', -0), '\uDF06', "-0");
a(t.call('\uDF06abc', +0), '\uDF06', "+0");
a(t.call('\uDF06abc', 1), 'a', "1");
a(t.call('\uDF06abc', 42), '', "42");
a(t.call('\uDF06abc', +Infinity), '', "+Infinity");
a(t.call('\uDF06abc', null), '\uDF06', "null");
a(t.call('\uDF06abc', undefined), '\uDF06', "undefined");
a(t.call('\uDF06abc'), '\uDF06', "No arguments");
a(t.call('\uDF06abc', false), '\uDF06', "false");
a(t.call('\uDF06abc', NaN), '\uDF06', "NaN");
a(t.call('\uDF06abc', ''), '\uDF06', "Empty string");
a(t.call('\uDF06abc', '_'), '\uDF06', "_");
a(t.call('\uDF06abc', '1'), 'a', "'1'");
a.h1("Context");
a.throws(function () { t.call(undefined); }, TypeError, "Undefined");
a.throws(function () { t.call(undefined, 4); }, TypeError,
"Undefined + argument");
a.throws(function () { t.call(null); }, TypeError, "Null");
a.throws(function () { t.call(null, 4); }, TypeError, "Null + argument");
a(t.call(42, 0), '4', "Number #1");
a(t.call(42, 1), '2', "Number #2");
a(t.call({ toString: function () { return 'abc'; } }, 2), 'c', "Object");
};
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