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esnext.iterator.take.js
23 lines (18 loc) · 1.03 KB
/
esnext.iterator.take.js
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import { createIterator } from '../helpers/helpers';
import Iterator from 'core-js-pure/full/iterator';
QUnit.test('Iterator#take', assert => {
const { take } = Iterator.prototype;
assert.isFunction(take);
assert.arity(take, 1);
assert.nonEnumerable(Iterator.prototype, 'take');
assert.arrayEqual(take.call(createIterator([1, 2, 3]), 2).toArray(), [1, 2], 'basic functionality');
assert.arrayEqual(take.call(createIterator([1, 2, 3]), 1.5).toArray(), [1], 'float');
assert.arrayEqual(take.call(createIterator([1, 2, 3]), 4).toArray(), [1, 2, 3], 'big');
assert.arrayEqual(take.call(createIterator([1, 2, 3]), 0).toArray(), [], 'zero');
assert.throws(() => take.call(undefined, 1), TypeError);
assert.throws(() => take.call(null, 1), TypeError);
assert.throws(() => take.call({}, 1), TypeError);
assert.throws(() => take.call([], 1), TypeError);
assert.throws(() => take.call(createIterator([1, 2, 3]), -1), RangeError, 'negative');
assert.throws(() => take.call(createIterator([1, 2, 3]), NaN), RangeError, 'NaN');
});