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const { assign, create } = Object;
QUnit.test('AsyncIterator.from', assert => {
const { from } = AsyncIterator;
assert.isFunction(from);
assert.arity(from, 1);
assert.name(from, 'from');
assert.looksNative(from);
assert.nonEnumerable(AsyncIterator, 'from');
assert.true(AsyncIterator.from([].values()) instanceof AsyncIterator, 'proxy, iterator');
assert.true(AsyncIterator.from([]) instanceof AsyncIterator, 'proxy, iterable');
const asyncIterator = assign(create(AsyncIterator.prototype), {
next: () => { /* empty */ },
});
assert.same(AsyncIterator.from(asyncIterator), asyncIterator, 'does not wrap AsyncIterator instances');
assert.throws(() => from(undefined), TypeError);
assert.throws(() => from(null), TypeError);
return AsyncIterator.from([1, Promise.resolve(2), 3]).toArray().then(result => {
assert.arrayEqual(result, [1, 2, 3], 'unwrap promises');
});
});
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