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/* eslint-disable prefer-spread -- required for testing */
QUnit.test('String.fromCodePoint', assert => {
const { fromCodePoint } = String;
assert.isFunction(fromCodePoint);
assert.arity(fromCodePoint, 1);
assert.name(fromCodePoint, 'fromCodePoint');
assert.looksNative(fromCodePoint);
assert.nonEnumerable(String, 'fromCodePoint');
assert.same(fromCodePoint(''), '\0');
assert.same(fromCodePoint(), '');
assert.same(fromCodePoint(-0), '\0');
assert.same(fromCodePoint(0), '\0');
assert.same(fromCodePoint(0x1D306), '\uD834\uDF06');
assert.same(fromCodePoint(0x1D306, 0x61, 0x1D307), '\uD834\uDF06a\uD834\uDF07');
assert.same(fromCodePoint(0x61, 0x62, 0x1D307), 'ab\uD834\uDF07');
assert.same(fromCodePoint(false), '\0');
assert.same(fromCodePoint(null), '\0');
assert.throws(() => fromCodePoint('_'), RangeError);
assert.throws(() => fromCodePoint('+Infinity'), RangeError);
assert.throws(() => fromCodePoint('-Infinity'), RangeError);
assert.throws(() => fromCodePoint(-1), RangeError);
assert.throws(() => fromCodePoint(0x10FFFF + 1), RangeError);
assert.throws(() => fromCodePoint(3.14), RangeError);
assert.throws(() => fromCodePoint(3e-2), RangeError);
assert.throws(() => fromCodePoint(-Infinity), RangeError);
assert.throws(() => fromCodePoint(Infinity), RangeError);
assert.throws(() => fromCodePoint(NaN), RangeError);
assert.throws(() => fromCodePoint(undefined), RangeError);
assert.throws(() => fromCodePoint({}), RangeError);
assert.throws(() => fromCodePoint(/./), RangeError);
let number = 0x60;
assert.same(fromCodePoint({
valueOf() {
return ++number;
},
}), 'a');
assert.same(number, 0x61);
// one code unit per symbol
let counter = 2 ** 15 * 3 / 2;
let result = [];
while (--counter >= 0) result.push(0);
// should not throw
fromCodePoint.apply(null, result);
counter = 2 ** 15 * 3 / 2;
result = [];
while (--counter >= 0) result.push(0xFFFF + 1);
// should not throw
fromCodePoint.apply(null, result);
});
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