molstar
Version:
A comprehensive macromolecular library.
28 lines • 1.01 kB
JavaScript
/**
* Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
import { Iterator } from '../iterator';
function iteratorToArray(it) {
var ret = [];
while (it.hasNext) {
var v = it.move();
ret[ret.length] = v;
}
return ret;
}
describe('basic iterators', function () {
function check(name, iter, expected) {
it(name, function () {
expect(iteratorToArray(iter)).toEqual(expected);
});
}
check('empty', Iterator.Empty, []);
check('singleton', Iterator.Value(10), [10]);
check('array', Iterator.Array([1, 2, 3]), [1, 2, 3]);
check('range', Iterator.Range(0, 3), [0, 1, 2, 3]);
check('map', Iterator.map(Iterator.Range(0, 1), function (x) { return x + 1; }), [1, 2]);
check('filter', Iterator.filter(Iterator.Range(0, 3), function (x) { return x >= 2; }), [2, 3]);
});
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