How to use toAsync method in Playwright Internal

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iterable-async.test.js

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...120 }, 0, arr)[1];121 });122 123 it('should yield accumulated items', async () => {124 await expect(toArray(accumulate(toAsync(pred), iterator)))125 .to.eventually.eql(expected);126 });127 128 it('should work with arrays', async () => {129 await expect(toArray(accumulate(toAsync(pred))(arr)))130 .to.eventually.eql(expected);131 });132 133 it('should be curried', async () => {134 await expect(toArray(accumulate(toAsync(pred))(iterator)))135 .to.eventually.eql(expected);136 });137 138 });139 140 describe('append', () => {141 142 it('should append an element', async () => {143 await expect(toArray(append('test', iterator)))144 .to.eventually.eql(R.append('test', arr));145 });146 147 it('should be curried', async () => {148 await expect(toArray(append('test')(iterator)))149 .to.eventually.eql(R.append('test', arr));150 });151 152 });153 154 describe('concat', () => {155 156 let iterators;157 beforeEach(() => {158 iterators = [159 range(0, 10),160 range(10, 20),161 ];162 expected = R.range(0, 20);163 });164 165 it('should concat iterators', async () => {166 await expect(toArray(concat(...iterators)))167 .to.eventually.eql(expected);168 });169 170 it('should work with arrays', async () => {171 const arrays = await mapP(toArray, iterators);172 await expect(toArray(concat(...arrays)))173 .to.eventually.eql(expected);174 });175 176 it('should be curried', async () => {177 await expect(toArray(concat(iterators[0])(iterators[1])))178 .to.eventually.eql(expected);179 });180 181 });182 183 describe('correspondWith', () => {184 185 let arr1, arr2;186 let iter1, iter2;187 beforeEach(() => {188 arr1 = [189 { id: 123, saved: true },190 { id: 456, saved: false },191 { id: 789, saved: true },192 ];193 arr2 = [194 { id: 123, saved: false },195 { id: 456, saved: true },196 { id: 789, saved: false },197 ];198 iter1 = from(arr1);199 iter2 = from(arr2);200 pred = on(is, R.prop('id'));201 });202 203 it('should return true if elements in same index pass pred', async () => {204 await expect(correspondsWith(toAsync(pred), iter1, iter2))205 .to.eventually.eql(true);206 });207 208 it('should work with arrays', async () => {209 await expect(correspondsWith(toAsync(pred), arr1, arr2))210 .to.eventually.eql(true);211 });212 213 it('should return false if elements in same index do not pass pred', async () => {214 arr1[0].id = 999;215 await expect(correspondsWith(toAsync(pred), iter1, iter2))216 .to.eventually.eql(false);217 });218 219 it('should return false if iterables are different lengths', async () => {220 arr1.pop();221 await expect(correspondsWith(toAsync(pred), iter1, iter2))222 .to.eventually.eql(false);223 });224 225 it('should be curried', async () => {226 await expect(correspondsWith(toAsync(pred))(iter1)(iter2))227 .to.eventually.eql(true);228 });229 230 });231 232 describe('count', () => {233 234 beforeEach(() => {235 pred = n => !!(n % 3);236 });237 238 it('should count number of items for which pred returns true', async () => {239 await expect(count(toAsync(pred), iterator))240 .to.eventually.eql(R.filter(pred, arr).length);241 });242 243 it('should be curried', async () => {244 await expect(count(toAsync(pred))(iterator))245 .to.eventually.eql(R.filter(pred, arr).length);246 });247 248 });249 250 describe('cycle', () => {251 252 let n;253 beforeEach(() => {254 n = random(10, 200);255 expected = R.pipe(256 n => Math.ceil(n /​ arr.length),257 R.times(() => arr),258 R.flatten,259 R.take(n),260 )(n);261 });262 263 it('should infinitely cycle through the iterator', async () => {264 iterator = R.pipe(cycle, take(n))(iterator);265 await expect(toArray(iterator)).to.eventually.eql(expected);266 });267 268 it('should work with arrays', async () => {269 iterator = R.pipe(cycle, take(n))(arr);270 await expect(toArray(iterator)).to.eventually.eql(expected);271 });272 273 });274 275 describe('cycleN', () => {276 277 let n;278 beforeEach(() => {279 n = 3;280 expected = R.chain(() => arr, [...Array(n)]);281 });282 283 it('should cycle through the iterator n times', async () => {284 iterator = cycleN(n, iterator);285 await expect(toArray(iterator))286 .to.eventually.eql(expected);287 });288 289 it('should yield original items if n = 1', async () => {290 iterator = cycleN(1, iterator);291 await expect(toArray(iterator))292 .to.eventually.eql(arr);293 });294 295 it('should return an empty iterator if n = 0', async () => {296 iterator = cycleN(0, iterator);297 await expect(toArray(iterator))298 .to.eventually.eql([]);299 });300 301 it('should work with arrays', async () => {302 iterator = cycleN(n, arr);303 await expect(toArray(iterator))304 .to.eventually.eql(expected);305 });306 307 it('should be curried', async () => {308 iterator = cycleN(n)(iterator);309 await expect(toArray(iterator))310 .to.eventually.eql(expected);311 });312 313 });314 315 describe('drop', () => {316 317 let n;318 beforeEach(() => {319 n = random(0, 70);320 expected = R.drop(n, arr);321 });322 323 it('should drop n items', async () => {324 await expect(toArray(drop(n, iterator)))325 .to.eventually.eql(expected);326 });327 328 it('should yield all items if n <= 0', async () => {329 await expect(toArray(drop(-1, iterator)))330 .to.eventually.eql(arr);331 });332 333 it('should work with arrays', async () => {334 await expect(toArray(drop(n, arr)))335 .to.eventually.eql(expected);336 });337 338 it('should be curried', async () => {339 await expect(toArray(drop(n)(iterator)))340 .to.eventually.eql(expected);341 });342 343 });344 345 describe('dropLast', () => {346 347 it('should drop the last n items', async () => {348 const n = random(0, arr.length);349 await expect(toArray(dropLast(n, iterator))).to.eventually.eql(350 R.dropLast(n, arr),351 );352 });353 354 it('should be curried', async () => {355 const n = random(0, arr.length);356 await expect(toArray(dropLast(n)(iterator))).to.eventually.eql(357 R.dropLast(n, arr),358 );359 });360 361 });362 363 describe('dropWhile', () => {364 365 beforeEach(() => {366 pred = n => (n < 70 || n > 90);367 expected = R.dropWhile(pred, arr);368 });369 370 it('should drop items while the predicate is satisfied', async () => {371 await expect(toArray(dropWhile(toAsync(pred), iterator)))372 .to.eventually.eql(expected);373 });374 375 it('work with arrays', async () => {376 await expect(toArray(dropWhile(toAsync(pred), arr)))377 .to.eventually.eql(expected);378 });379 380 it('should be curried', async () => {381 await expect(toArray(dropWhile(toAsync(pred))(iterator)))382 .to.eventually.eql(expected);383 });384 385 });386 387 describe('enumerate', () => {388 389 beforeEach(async () => {390 expected = await toArray(zip(391 range(0, arr.length),392 from(arr),393 ));394 });395 396 it('should yield [item, index] tuples', async () => {397 await expect(toArray(enumerate(iterator)))398 .to.eventually.eql(expected);399 });400 401 it('should work with arrays', async () => {402 await expect(toArray(enumerate(arr)))403 .to.eventually.eql(expected);404 });405 406 });407 408 describe('every', () => {409 410 beforeEach(() => {411 pred = (num) => num < 20;412 expected = R.all(pred, arr);413 });414 415 it('should return true if all items pass the predicate', async () => {416 await expect(every(toAsync(pred), iterator))417 .eventually.to.eql(expected);418 });419 420 it('should return false if any item does not pass the predicate', async () => {421 await expect(every(toAsync(R.F), iterator))422 .eventually.to.eql(R.all(R.F, arr));423 });424 425 it('should return true for empty iterators', async () => {426 await expect(every(toAsync(pred), of()))427 .eventually.to.eql(true);428 });429 430 it('should be curried', async () => {431 await expect(every(toAsync(pred))(iterator))432 .eventually.to.eql(expected);433 });434 435 });436 437 describe('exhaust', () => {438 439 it('should return undefined', async () => {440 await expect(exhaust(iterator))441 .to.eventually.eql(undefined);442 });443 444 it('should not exhaust arrays', async () => {445 const items = [...arr];446 await exhaust(arr);447 expect(arr).to.eql(items);448 });449 450 it('should exhaust the iterator', async () => {451 await exhaust(iterator);452 await expect(toArray(iterator))453 .to.eventually.eql([]);454 });455 456 });457 458 describe('filter', () => {459 460 beforeEach(() => {461 pred = num => num % 2;462 expected = R.filter(pred, arr);463 });464 465 it('should yield items that pass the predicate', async () => {466 await expect(toArray(filter(toAsync(pred), iterator)))467 .to.eventually.eql(expected);468 });469 470 it('should work with arrays', async () => {471 await expect(toArray(filter(toAsync(pred), arr)))472 .to.eventually.eql(expected);473 });474 475 it('should be curried', async () => {476 await expect(toArray(filter(toAsync(pred))(iterator)))477 .to.eventually.eql(expected);478 });479 480 });481 482 describe('find', () => {483 484 let toFind;485 beforeEach(() => {486 toFind = sample(arr);487 pred = n => (n === toFind);488 expected = R.find(pred, arr);489 });490 491 it('should return the first item matching predicate', async () => {492 await expect(find(toAsync(pred), iterator))493 .to.eventually.eql(expected);494 });495 496 it('should stop iteration at the first predicate match', async () => {497 const spy = sinon.spy(toAsync(pred));498 await find(spy, iterator);499 expect(spy.callCount)500 .to.eql(R.indexOf(toFind, arr) + 1);501 });502 503 it('should be curried', async () => {504 await expect(find(toAsync(pred))(iterator))505 .to.eventually.eql(expected);506 });507 508 });509 510 describe('flatten', () => {511 512 it('should flatten recursively', async () => {513 arr = [1, [2, 3, [4, 5, 6], [7, 8, 9, [12, 13, 14]]], [9, 10, 11]];514 iterator = from(arr);515 await expect(toArray(flatten(iterator)))516 .to.eventually.eql([1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 9, 10, 11]);517 });518 519 });520 521 describe('flattenN', () => {522 523 const input = [1, [2, 3, [4, 5, 6], [7, 8, 9, [12, 13, 14]]], [9, 10, 11]];524 const outputs = {525 0: [1, [2, 3, [4, 5, 6], [7, 8, 9, [12, 13, 14]]], [9, 10, 11]],526 1: [1, 2, 3, [4, 5, 6], [7, 8, 9, [12, 13, 14]], 9, 10, 11],527 2: [1, 2, 3, 4, 5, 6, 7, 8, 9, [12, 13, 14], 9, 10, 11],528 3: [1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 9, 10, 11],529 4: [1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 9, 10, 11],530 };531 532 it('should flatten n levels of depth', async () => {533 for (const [n, output] of Object.entries(outputs)) {534 iterator = from(input);535 await expect(toArray(flattenN(+n, iterator)))536 .to.eventually.eql(output);537 }538 });539 540 });541 542 describe('flatIterate', () => {543 544 let num;545 beforeEach(() => {546 num = 10;547 });548 549 it('should yield infinitely', async () => {550 551 iterator = R.applyTo(0, R.pipe(552 flatIterate(function* it(n) {553 yield n - 1;554 yield n;555 yield n + 1;556 557 return n + 1;558 }),559 take(num),560 ));561 562 const expected = R.applyTo(num, R.pipe(563 R.range(0),564 R.chain(n => [n - 1, n, n + 1]),565 R.take(num),566 ));567 568 return expect(toArray(iterator))569 .to.eventually.eql(expected);570 });571 572 });573 574 describe('flatMap', () => {575 576 beforeEach(() => {577 pred = async function* pred(num) {578 while (num--) yield await num;579 };580 arr = R.range(0, 5);581 iterator = from(arr);582 expected = [0, 1, 0, 2, 1, 0, 3, 2, 1, 0];583 });584 585 it('should yield all yielded items from predicate', async () => {586 expect(await toArray(flatMap(pred, iterator)))587 .to.eql(expected);588 });589 590 it('should work with arrays', async () => {591 pred = async (num) => [num, num + 1];592 expect(await toArray(flatMap(pred, arr)))593 .to.eql([0, 1, 1, 2, 2, 3, 3, 4, 4, 5]);594 });595 596 it('should be curried', async () => {597 expect(await toArray(flatMap(pred)(iterator)))598 .to.eql(expected);599 });600 601 });602 603 describe('flatUnfold', () => {604 605 it('should flatten yielded items', async () => {606 iterator = flatUnfold(n => {607 if (n >= 5) return null;608 return [from([n, n * 2]), (n + 1)];609 }, 0);610 await expect(toArray(iterator)).to.eventually.eql([611 0, 0, 1, 2, 2, 4, 3, 6, 4, 8,612 ]);613 });614 615 });616 617 describe('forEach', () => {618 619 it('should call predicate for each yielded item', async () => {620 pred = sinon.stub().resolves();621 await toArray(forEach(pred, iterator));622 const args = pred.args.map(R.head);623 expect(args).to.eql(arr);624 });625 626 it('should yield items from the input iterator', async () => {627 await expect(toArray(forEach(noop, iterator)))628 .to.eventually.eql(arr);629 });630 631 it('should be curried', async () => {632 pred = sinon.stub().resolves();633 await toArray(forEach(pred)(iterator));634 const args = pred.args.map(R.head);635 expect(args).to.eql(arr);636 });637 638 });639 640 describe('frame', () => {641 642 let num;643 beforeEach(() => {644 num = random(1, arr.length - 1);645 expected = R.aperture(num, arr);646 });647 648 it('should yield sliding frames of size n', async () => {649 await expect(toArray(frame(num)(iterator)))650 .to.eventually.eql(expected);651 });652 653 it('should work with arrays', async () => {654 await expect(toArray(frame(num)(arr)))655 .to.eventually.eql(expected);656 });657 658 it('should be curried', async () => {659 await expect(toArray(frame(num)(iterator)))660 .to.eventually.eql(expected);661 });662 663 });664 665 describe('from', () => {666 667 it('should return an async iterator for an iterable', async () => {668 expect(isAsyncIterable(from(arr))).to.eql(true);669 expect(isIterator(from(arr))).to.eql(true);670 expect(await toArray(from(arr))).to.eql(arr);671 });672 673 });674 675 describe('groupWith', () => {676 677 it('should', async () => {678 const preds = [679 (left, right) => (left === right),680 (left, right) => (left !== right),681 (left, right) => (left >= right),682 (left, right) => (left <= right),683 (left, right) => (left + 1 === right),684 (left, right) => (left % 2 === right % 2),685 ];686 687 for (const arr of [688 [0, 1, 1, 2, 2, 3, 4, 5, 5],689 [],690 [0, 0, 0, 0],691 [9, 8, 7, 6, 5, 4, 3, 2, 1],692 [2, 2, 1, 2, 3, 4, 4, 6, 8, 7, 1, 2, 9, 9],693 ]) {694 for (const pred of preds) {695 await expect(toArray(groupWith(toAsync(pred), from(arr))))696 .to.eventually.eql(R.groupWith(pred, arr));697 }698 }699 700 });701 702 });703 704 describe('includes', () => {705 706 let item;707 beforeEach(() => {708 item = sample(arr);709 });710 711 it('should return true if a value in the iterable strictly equals', async () => {712 await expect(includes(item, iterator)).to.eventually.eql(true);713 });714 715 it('should return false if no value in the iterable strictly equals', async () => {716 await expect(includes({ test: true }, iterator)).to.eventually.eql(false);717 });718 719 });720 721 describe('indexOf', () => {722 723 let item;724 beforeEach(() => {725 item = sample(arr);726 });727 728 it('should return the index of the first strictly equal match', async () => {729 await expect(indexOf(item, iterator))730 .to.eventually.eql(R.indexOf(item, arr));731 });732 733 it('should return -1 if no value in the iterable strictly equals', async () => {734 await expect(indexOf({ test: true }, iterator)).to.eventually.eql(-1);735 });736 737 });738 739 describe('indices', () => {740 741 it('should return iterator of indices', async () => {742 await expect(toArray(indices(iterator)))743 .to.eventually.eql(R.keys(arr).map(n => +n));744 });745 746 });747 748 describe('init', () => {749 750 it('should yield every item, but the last', async () => {751 await expect(toArray(init(iterator))).to.eventually.eql(752 R.init(arr)753 );754 });755 756 });757 758 describe('intersperse', () => {759 760 let sep;761 beforeEach(() => {762 sep = '|';763 });764 765 it('should yield seperator between items', async () => {766 await expect(toArray(intersperse(sep, iterator)))767 .to.eventually.eql(R.intersperse(sep, arr));768 });769 770 it('should be curried', async () => {771 await expect(toArray(intersperse(sep)(iterator)))772 .to.eventually.eql(R.intersperse(sep, arr));773 });774 775 });776 777 describe('isEmpty', () => {778 779 it('should return true for empty iterator', async () => {780 await expect(isEmpty(of())).to.eventually.eql(true);781 });782 783 it('should return false for iterators with > 0 items', async () => {784 await expect(isEmpty(of(1))).to.eventually.eql(false);785 });786 787 });788 789 describe('iterate', () => {790 791 let init;792 beforeEach(() => {793 init = 15;794 pred = R.add(10);795 expected = [15, 25, 35, 45, 55];796 });797 798 it('should yield initial item and predicate returns', async () => {799 iterator = take(5, iterate(toAsync(pred), init));800 await expect(toArray(iterator)).to.eventually.eql(expected);801 });802 803 it('should be curried', async () => {804 iterator = take(5, iterate(toAsync(pred))(init));805 await expect(toArray(iterator)).to.eventually.eql(expected);806 });807 808 });809 810 describe('join', () => {811 812 it('should join iterator into string', async () => {813 await expect(join(iterator))814 .to.eventually.eql(R.join('', arr));815 });816 817 });818 819 describe('joinWith', () => {820 821 let sep;822 beforeEach(() => {823 sep = '|';824 });825 826 it('should join iterator into string with interspersed separator', async () => {827 await expect(joinWith(sep, iterator))828 .to.eventually.eql(R.join(sep, arr));829 });830 831 it('should be curried', async () => {832 await expect(joinWith(sep)(iterator))833 .to.eventually.eql(R.join(sep, arr));834 });835 836 });837 838 describe('length', () => {839 840 it('should return the iterator length', async () => {841 await expect(length(iterator)).to.eventually.eql(arr.length);842 });843 844 it('should work with arrays', async () => {845 await expect(length(arr)).to.eventually.eql(arr.length);846 });847 848 it('should exhaust the iterator', async () => {849 await length(iterator);850 await expect(toArray(iterator)).to.eventually.eql([]);851 });852 853 });854 855 describe('map', () => {856 857 beforeEach(async () => {858 pred = R.add(random(10, 20));859 expected = R.map(pred, arr);860 });861 862 it('should transform yielded items with predicate', async () => {863 expect(await toArray(map(toAsync(pred), iterator))).to.eql(expected);864 });865 866 it('should be curried', async () => {867 expect(await toArray(map(toAsync(pred))(iterator))).to.eql(expected);868 });869 870 });871 872 describe('maxBy', () => {873 874 let objs;875 beforeEach(() => {876 objs = arr.map(id => ({ id }));877 iterator = from(objs);878 pred = R.prop('id');879 expected = R.reduce(Math.max, -Infinity, arr);880 });881 882 it('should return max item after pred', async () => {883 await expect(maxBy(toAsync(pred), iterator)).to.eventually.eql(expected);884 });885 886 it('should work on arrays', async () => {887 await expect(maxBy(toAsync(pred), objs)).to.eventually.eql(expected);888 });889 890 it('should be curried', async () => {891 await expect(maxBy(toAsync(pred))(iterator)).to.eventually.eql(expected);892 });893 894 });895 896 describe('minBy', () => {897 898 let objs;899 beforeEach(() => {900 objs = arr.map(id => ({ id }));901 iterator = from(objs);902 pred = R.prop('id');903 expected = R.reduce(Math.min, Infinity, arr);904 });905 906 it('should return max item after pred', async () => {907 await expect(minBy(toAsync(pred), iterator))908 .to.eventually.eql(expected);909 });910 911 it('should work on arrays', async () => {912 await expect(minBy(toAsync(pred), objs))913 .to.eventually.eql(expected);914 });915 916 it('should be curried', async () => {917 await expect(minBy(toAsync(pred))(iterator))918 .to.eventually.eql(expected);919 });920 921 });922 923 describe('next', () => {924 925 it('should return the next value in the iterator', async () => {926 const yields = [927 await next(iterator),928 await next(iterator),929 await next(iterator),930 await next(iterator),931 ];932 expect(yields).to.eql([933 arr[0],934 arr[1],935 arr[2],936 arr[3],937 ]);938 });939 940 it('should return the next value in the iterator', async () => {941 await expect(next(iterator)).to.eventually.eql(R.head(arr));942 });943 944 it('should advance the iterator', async () => {945 await next(iterator);946 await expect(toArray(iterator)).to.eventually.eql(arr.slice(1));947 });948 949 xit('should return ? for arrays', async () => {950 await expect(next(arr)).to.eventually.eql();951 });952 953 it('should throw StopIteration if the iterator is exhausted', async () => {954 await exhaust(iterator);955 await expect(next(iterator))956 .to.eventually.be.rejectedWith(StopIteration);957 });958 959 });960 961 describe('none', () => {962 963 beforeEach(() => {964 pred = n => n < Infinity;965 });966 967 it('should return false if any item passes the predicate', async () => {968 await expect(none(toAsync(pred), iterator)).to.eventually.eql(false);969 });970 971 it('should return true if no items pass the predicate', async () => {972 pred = n => n > Infinity;973 await expect(none(toAsync(pred), iterator)).to.eventually.eql(true);974 });975 976 it('should return true for empty iterators', async () => {977 await expect(none(toAsync(pred), of())).to.eventually.eql(true);978 });979 980 it('should be curried', async () => {981 await expect(none(toAsync(pred))(iterator)).to.eventually.eql(false);982 });983 984 });985 986 describe('nth', () => {987 988 let index;989 beforeEach(() => {990 index = random(0, arr.length - 1);991 expected = R.nth(index, arr);992 });993 994 it('should return the nth item', async () => {995 await expect(nth(index, iterator))996 .to.eventually.eql(expected);997 });998 999 it('should work with arrays', async () => {1000 await expect(nth(index, arr))1001 .to.eventually.eql(expected);1002 });1003 1004 xit('should work with negative indices', async () => {1005 await expect(nth(-index, iterator))1006 .to.eventually.eql(R.nth(-index, arr));1007 });1008 1009 it('should be curried', async () => {1010 await expect(nth(index)(iterator))1011 .to.eventually.eql(expected);1012 });1013 1014 });1015 1016 describe('of', () => {1017 1018 it('should yield arguments', async () => {1019 expect(isAsyncIterable(of(...arr))).to.eql(true);1020 expect(isIterator(of(...arr))).to.eql(true);1021 expect(await toArray(of(...arr))).to.eql(arr);1022 });1023 1024 });1025 1026 describe('pad', () => {1027 1028 let padItem, n;1029 beforeEach(() => {1030 padItem = 'world';1031 n = 100;1032 arr = ['hello', 'this', 'is', 'my'];1033 iterator = pad(padItem, from(arr));1034 expected = [1035 ...arr,1036 ...R.times(R.always(padItem), n - arr.length),1037 ];1038 });1039 1040 it('should pad to infinity', async () => {1041 await expect(toArray(take(n, iterator))).to.eventually.eql(expected);1042 });1043 1044 it('should be curried', async () => {1045 await expect(toArray(take(n)(iterator))).to.eventually.eql(expected);1046 });1047 1048 });1049 1050 describe('padTo', () => {1051 1052 let padItem, n;1053 beforeEach(() => {1054 padItem = 'world';1055 n = random(10, 500);1056 arr = ['hello', 'this', 'is', 'my'];1057 iterator = padTo(n, padItem, from(arr));1058 expected = [1059 ...arr,1060 ...R.times(R.always(padItem), n - arr.length),1061 ];1062 });1063 1064 it('should return iterator of length n', async () => {1065 await expect(length(iterator))1066 .to.eventually.eql(n);1067 });1068 1069 it('should pad to length of n', async () => {1070 await expect(toArray(iterator))1071 .to.eventually.eql(expected);1072 });1073 1074 it('should not truncate when n < iterable length', async () => {1075 iterator = padTo(2, padItem, from(arr));1076 await expect(toArray(iterator))1077 .to.eventually.eql(arr);1078 });1079 1080 it('should be curried', async () => {1081 await expect(toArray(padTo(n)(padItem)(from(arr))))1082 .to.eventually.eql(expected);1083 });1084 1085 });1086 1087 describe('partition', () => {1088 1089 beforeEach(() => {1090 pred = n => n % 2;1091 });1092 1093 it('should bifurcate by pred', async () => {1094 await expect(mapP(toArray, partition(toAsync(pred), iterator)))1095 .to.eventually.eql(R.partition(pred, arr));1096 });1097 1098 it('should be curried', async () => {1099 await expect(mapP(toArray, partition(toAsync(pred))(iterator)))1100 .to.eventually.eql(R.partition(pred, arr));1101 });1102 1103 });1104 1105 describe('prepend', () => {1106 1107 let item;1108 beforeEach(() => {1109 item = 'test';1110 expected = R.prepend(item, arr);1111 });1112 1113 it('should prepend an element', async () => {1114 await expect(toArray(prepend(item, iterator)))1115 .to.eventually.eql(expected);1116 });1117 1118 it('should work with arrays', async () => {1119 await expect(toArray(prepend(item, arr)))1120 .to.eventually.eql(expected);1121 });1122 1123 it('should be curried', async () => {1124 await expect(toArray(prepend(item)(iterator)))1125 .to.eventually.eql(expected);1126 });1127 1128 });1129 1130 describe('range', () => {1131 1132 let iterator;1133 beforeEach(() => {1134 arr = R.range(0, 10);1135 iterator = from(arr);1136 expected = arr;1137 });1138 1139 it('should create an iterator of numbers with inclusive start and exclusive end', async () => {1140 await expect(toArray(iterator))1141 .to.eventually.eql(expected);1142 });1143 1144 it('should work with infinite sequences', async () => {1145 const len = 100;1146 const infinite = range(0, Infinity);1147 const first = take(len, infinite);1148 await expect(toArray(first))1149 .to.eventually.eql(R.range(0, len));1150 });1151 1152 it('should be curried', async () => {1153 await expect(toArray(range(0)(10)))1154 .to.eventually.eql(expected);1155 });1156 1157 });1158 1159 describe('rangeStep', () => {1160 1161 describe('positive step', () => {1162 1163 it('should have an inclusive start and exlusive end', async () => {1164 await expect(toArray(rangeStep(1.25, 15, 30)))1165 .to.eventually.eql([15, 16.25, 17.5, 18.75, 20, 21.25, 22.5, 23.75, 25, 26.25, 27.5, 28.75]);1166 });1167 1168 it('should yield no elements if start > end', async () => {1169 await expect(toArray(rangeStep(1.25, 30, 15)))1170 .to.eventually.eql([]);1171 });1172 1173 });1174 1175 describe('negative step', () => {1176 1177 it('should have an inclusive start and exlusive end', async () => {1178 await expect(toArray(rangeStep(-1.75, 40, 20)))1179 .to.eventually.eql([40, 38.25, 36.5, 34.75, 33, 31.25, 29.5, 27.75, 26, 24.25, 22.5, 20.75]);1180 });1181 1182 it('should yield no elements if start < end', async () => {1183 await expect(toArray(rangeStep(-1.75, 20, 40)))1184 .to.eventually.eql([]);1185 });1186 1187 });1188 1189 it('should return an empty iterable when step = 0', async () => {1190 /​/​ asc1191 await expect(toArray(rangeStep(0, 20, 40))).to.eventually.eql([]);1192 /​/​ desc1193 await expect(toArray(rangeStep(0, 80, 40))).to.eventually.eql([]);1194 });1195 1196 it('should be curried', async () => {1197 await expect(toArray(rangeStep(5)(15)(30)))1198 .to.eventually.eql([15, 20, 25]);1199 });1200 1201 });1202 1203 describe('reduce', () => {1204 1205 beforeEach(async () => {1206 pred = R.add;1207 expected = await reduceP(pred, 0, arr);1208 });1209 1210 it('should reduce iterator into accumulator', async () => {1211 await expect(reduce(toAsync(pred), 0, iterator))1212 .to.eventually.eql(expected);1213 });1214 1215 it('should work with arrays', async () => {1216 await expect(reduce(toAsync(pred), 0, arr))1217 .to.eventually.eql(expected);1218 });1219 1220 it('should be curried', () => {1221 expect(reduce(toAsync(pred))(0)(iterator))1222 .to.eventually.eql(expected);1223 });1224 1225 });1226 1227 describe('reject', () => {1228 1229 beforeEach(() => {1230 pred = num => num % 2;1231 expected = R.reject(pred, arr);1232 });1233 1234 it('should yield items that do not pass the predicate', async () => {1235 await expect(toArray(reject(toAsync(pred), iterator)))1236 .to.eventually.eql(expected);1237 });1238 1239 });1240 1241 describe('repeat', () => {1242 1243 let n;1244 beforeEach(() => {1245 n = random(1, 20);1246 });1247 1248 it('should repeat the input infinitely', async () => {1249 const thing = { test: true };1250 const taken = toArray(take(n, repeat(thing)));1251 await expect(taken).to.eventually.eql(R.times(() => thing, n));1252 });1253 1254 });1255 1256 describe('reverse', () => {1257 1258 it('should reverse the iterator', async () => {1259 await expect(toArray(reverse(iterator)))1260 .to.eventually.eql(R.reverse(arr));1261 });1262 1263 });1264 1265 describe('scan', () => {1266 1267 beforeEach(() => {1268 pred = R.add;1269 });1270 1271 it('should yield intermediate reductions', async () => {1272 await expect(toArray(scan(toAsync(pred), 1, iterator)))1273 .to.eventually.eql(R.scan(pred, 1, arr));1274 });1275 1276 it('should be curried', async () => {1277 await expect(toArray(scan(toAsync(pred))(1)(iterator)))1278 .to.eventually.eql(R.scan(pred, 1, arr));1279 });1280 1281 });1282 1283 describe('slice', () => {1284 1285 let start, end;1286 beforeEach(() => {1287 const mid = Math.ceil(arr.length /​ 2);1288 start = random(0, mid);1289 end = random(mid, arr.length);1290 expected = R.slice(start, end, arr);1291 });1292 1293 it('should slice between indexes', async () => {1294 const sliced = slice(start, end, iterator);1295 await expect(toArray(sliced)).to.eventually.eql(expected);1296 });1297 1298 it('should work with arrays', async () => {1299 const sliced = slice(start, end, arr);1300 await expect(toArray(sliced)).to.eventually.eql(expected);1301 });1302 1303 it('should be curried', async () => {1304 const sliced = slice(start)(end)(iterator);1305 await expect(toArray(sliced)).to.eventually.eql(expected);1306 });1307 1308 });1309 1310 describe('some', () => {1311 1312 beforeEach(() => {1313 pred = n => n > 5;1314 expected = R.any(pred, arr);1315 });1316 1317 it('should return true if any item passes the predicate', async () => {1318 await expect(some(toAsync(pred), iterator))1319 .to.eventually.eql(expected);1320 });1321 1322 it('should return false if any item does not pass the predicate', async () => {1323 pred = n => n > Infinity;1324 await expect(some(toAsync(pred), iterator))1325 .to.eventually.eql(R.any(pred, arr));1326 });1327 1328 it('should return false for empty iterators', async () => {1329 await expect(some(toAsync(pred), of()))1330 .to.eventually.eql(false);1331 });1332 1333 it('should be curried', async () => {1334 await expect(some(toAsync(pred))(iterator))1335 .to.eventually.eql(expected);1336 });1337 1338 });1339 1340 describe('splitAt', () => {1341 1342 let n;1343 beforeEach(() => {1344 n = random(0, arr.length - 1);1345 });1346 1347 it('should split iterator at the nth element', async () => {1348 const [left, right] = splitAt(n, iterator);1349 const [leftArr, rightArr] = R.splitAt(n, arr);1350 1351 await expect(toArray(left))1352 .to.eventually.eql(leftArr);1353 1354 await expect(toArray(right))1355 .to.eventually.eql(rightArr);1356 });1357 1358 });1359 1360 describe('splitEvery', () => {1361 1362 let n;1363 beforeEach(() => {1364 n = random(1, 10);1365 });1366 1367 it('should split iterator every n yields', async () => {1368 await expect(toArray(splitEvery(n, iterator)))1369 .to.eventually.eql(R.splitEvery(n, arr));1370 });1371 1372 it('should be curried', async () => {1373 await expect(toArray(splitEvery(n)(iterator)))1374 .to.eventually.eql(R.splitEvery(n, arr));1375 });1376 1377 });1378 1379 describe('sum', () => {1380 1381 beforeEach(() => {1382 expected = R.reduce(R.add, 0, arr);1383 });1384 1385 it('should sum the iterator', async () => {1386 await expect(sum(iterator)).to.eventually.eql(expected);1387 });1388 1389 it('should with with arrays', async () => {1390 await expect(sum(arr)).to.eventually.eql(expected);1391 });1392 1393 });1394 1395 describe('take', () => {1396 1397 let n;1398 beforeEach(() => {1399 n = random(0, arr.length - 1);1400 expected = R.take(n, arr);1401 });1402 1403 it('should yield the first n items', async () => {1404 await expect(toArray(take(n, iterator)))1405 .to.eventually.eql(expected);1406 });1407 1408 it('should yield nothing if n <= 0 ', async () => {1409 await expect(toArray(take(-1, iterator)))1410 .to.eventually.eql([]);1411 });1412 1413 it('should work with arrays', async () => {1414 await expect(toArray(take(n, arr)))1415 .to.eventually.eql(expected);1416 });1417 1418 it('should be curried', async () => {1419 await expect(toArray(take(n)(iterator)))1420 .to.eventually.eql(expected);1421 });1422 1423 });1424 1425 describe('takeWhile', () => {1426 1427 beforeEach(() => {1428 arr = R.range(50, 500);1429 iterator = from(arr);1430 pred = n => (n < 175 || n > 200);1431 expected = R.takeWhile(pred, arr);1432 });1433 1434 it('should take items while pred is true', async () => {1435 await expect(toArray(takeWhile(toAsync(pred), iterator)))1436 .to.eventually.eql(expected);1437 });1438 1439 it('should work with arrays', async () => {1440 await expect(toArray(takeWhile(toAsync(pred), arr)))1441 .to.eventually.eql(expected);1442 });1443 1444 it('should be curried', async () => {1445 await expect(toArray(takeWhile(toAsync(pred))(iterator)))1446 .to.eventually.eql(expected);1447 });1448 1449 });1450 1451 describe('tee', () => {1452 1453 let n, copies;1454 beforeEach(() => {1455 arr = R.range(0, 2);1456 iterator = from(arr);1457 n = 10;1458 copies = tee(n, iterator);1459 expected = [...Array(n)].map(() => arr);1460 });1461 1462 it('should return n copies', async () => {1463 expect(copies.length).to.eql(n);1464 for (const copy of copies) {1465 expect(isAsyncIterable(copy)).to.eql(true);1466 expect(isIterator(copy)).to.eql(true);1467 await expect(toArray(copy))1468 .to.eventually.eql(arr);1469 }1470 });1471 1472 it('should exhaust the input iterator when one copy is exhausted', async () => {1473 tee(n, iterator);1474 await expect(toArray(iterator)).to.eventually.eql(arr);1475 1476 iterator = from(arr);1477 const [copy] = tee(n, iterator);1478 await exhaust(copy);1479 await expect(toArray(iterator)).to.eventually.eql([]);1480 });1481 1482 it('should be curried', async () => {1483 await expect(mapP(toArray, tee(n)(iterator)))1484 .to.eventually.eql(expected);1485 });1486 1487 });1488 1489 describe('times', () => {1490 1491 beforeEach(() => {1492 expected = R.times(R.always('test'), 10);1493 });1494 1495 it('should yield the item n times', async () => {1496 await expect(toArray(times(10, 'test')))1497 .to.eventually.eql(expected);1498 });1499 1500 it('should be curried', async () => {1501 await expect(toArray(times(10)('test')))1502 .to.eventually.eql(expected);1503 });1504 1505 });1506 1507 describe('unique', () => {1508 1509 beforeEach(() => {1510 arr = [1, 2, 3, 3, 3, 2, 1];1511 iterator = from(arr);1512 expected = [1, 2, 3];1513 });1514 1515 it('should yield unique items', async () => {1516 await expect(toArray(unique(iterator)))1517 .to.eventually.eql(expected);1518 });1519 1520 it('should work with arrays', async () => {1521 await expect(toArray(unique(arr)))1522 .to.eventually.eql(expected);1523 });1524 1525 });1526 1527 describe('uniqueWith', () => {1528 1529 beforeEach(() => {1530 arr = [1, 2, 3, 3, 3, 2, 1].map((id) => ({ id }));1531 pred = on(is, R.prop('id'));1532 iterator = from(arr);1533 });1534 1535 it('should yield unique items', async () => {1536 await expect(toArray(uniqueWith(toAsync(pred), iterator)))1537 .to.eventually.eql(R.uniqWith(pred, arr));1538 });1539 1540 it('should work with arrays', async () => {1541 await expect(toArray(uniqueWith(toAsync(pred), arr)))1542 .to.eventually.eql(R.uniqWith(pred, arr));1543 });1544 1545 it('should be curried', async () => {1546 await expect(toArray(uniqueWith(toAsync(pred))(iterator)))1547 .to.eventually.eql(R.uniqWith(pred, arr));1548 });1549 1550 });1551 1552 describe('unfold', () => {1553 1554 beforeEach(() => {1555 pred = n => (n > 50 ? false : [-n, n + 10]);1556 });1557 1558 it('should yield until a falsey value is returned', async () => {1559 await expect(toArray(unfold(toAsync(pred), 10)))1560 .to.eventually.eql(R.unfold(pred, 10));1561 });1562 1563 it('should be curried', async () => {1564 await expect(toArray(unfold(toAsync(pred))(10)))1565 .to.eventually.eql(R.unfold(pred, 10));1566 });1567 1568 });1569 1570 describe('unnest', () => {1571 1572 it('should flatten one level', async () => {1573 arr = [1, [2, 3, [4, 5, 6], [7, 8, 9, [12, 13, 14]]], [9, 10, 11]];1574 iterator = from(arr);1575 await expect(toArray(unnest(iterator)))1576 .to.eventually.eql(R.unnest(arr));1577 });1578 1579 it('should flatten iterators', async () => {1580 arr = [1, from([2, 3, 4, 5])];1581 1582 iterator = from(arr);1583 await expect(toArray(unnest(iterator)))1584 .to.eventually.eql([1, 2, 3, 4, 5]);1585 });1586 1587 });1588 1589 describe('unzip', () => {1590 1591 let arr1, arr2;1592 let range1, range2;1593 beforeEach(() => {1594 arr1 = R.range(0, 10);1595 arr2 = R.range(10, 20);1596 range1 = from(arr1);1597 range2 = from(arr2);1598 });1599 1600 it('should unzip tuples', async () => {1601 const zipped = zip(range1, range2);1602 const [left, right] = unzip(zipped);1603 await expect(toArray(left)).to.eventually.eql(arr1);1604 await expect(toArray(right)).to.eventually.eql(arr2);1605 });1606 1607 });1608 1609 describe('unzipN', () => {1610 1611 let n;1612 beforeEach(() => {1613 n = random(1, 10);1614 arr = [...Array(random(1, 10))]1615 .map(() => [...Array(n)]1616 .map(() => random(1617 random(0, 10),1618 random(10, 50),1619 )));1620 iterator = from(arr);1621 expected = [...Array(n)]1622 .map((_, i) => arr.map(R.nth(i)));1623 });1624 1625 it('should unzip n-pls', async () => {1626 const iterators = unzipN(n, iterator);1627 iterators.forEach((it) => {1628 expect(isAsyncIterable(it)).to.eql(true);1629 expect(isIterator(it)).to.eql(true);1630 });1631 await expect(mapP(toArray, iterators))1632 .to.eventually.eql(expected);1633 });1634 1635 it('should be curried', async () => {1636 await expect(mapP(toArray, unzipN(n)(iterator)))1637 .to.eventually.eql(expected);1638 });1639 1640 });1641 1642 describe('zip', () => {1643 1644 let range1, range2;1645 let iter1, iter2;1646 beforeEach('stub', () => {1647 range1 = R.range(0, 10);1648 range2 = R.range(0, 7).reverse();1649 iter1 = from(range1);1650 iter2 = from(range2);1651 expected = R.zip(range1, range2);1652 });1653 1654 it('should yield pairs until the shortest iterator is exhausted', async () => {1655 await expect(toArray(zip(iter1, iter2)))1656 .to.eventually.eql(expected);1657 });1658 1659 it('should work with arrays', async () => {1660 await expect(toArray(zip(range1, range2)))1661 .to.eventually.eql(expected);1662 });1663 1664 it('should be curried', async () => {1665 await expect(toArray(zip(iter1)(iter2)))1666 .to.eventually.eql(expected);1667 });1668 1669 });1670 1671 describe('zipAllWith', () => {1672 1673 let arrays, iterables, len, n;1674 beforeEach(() => {1675 n = random(1, 10);1676 len = random(1, 10);1677 pred = R.unapply(R.sum);1678 arrays = [...Array(n)].map(() => {1679 const num = random(0, 100);1680 return R.range(num, num + len);1681 });1682 iterables = arrays.map(from);1683 expected = [...Array(len)]1684 .map((_, i) => pred(...arrays.map(R.nth(i))));1685 });1686 1687 it('should zip iterables', async () => {1688 await expect(toArray(zipAllWith(toAsync(pred), iterables)))1689 .to.eventually.eql(expected);1690 });1691 1692 it('should work with arrays', async () => {1693 await expect(toArray(zipAllWith(toAsync(pred), arrays)))1694 .to.eventually.eql(expected);1695 });1696 1697 it('should be curried', async () => {1698 await expect(toArray(zipAllWith(toAsync(pred))(iterables)))1699 .to.eventually.eql(expected);1700 });1701 1702 });1703 1704 describe('zipWith', () => {1705 1706 let range1, range2;1707 let iter1, iter2;1708 beforeEach('stub', () => {1709 pred = R.add;1710 range1 = R.range(0, 10);1711 range2 = R.range(10, 20);1712 iter1 = from(range1);1713 iter2 = from(range2);1714 expected = R.zip(range1, range2);1715 });1716 1717 it('should yield items returned from predicate', async () => {1718 await expect(toArray(zipWith(toAsync(pred), iter1, iter2)))1719 .to.eventually.eql(R.zipWith(pred, range1, range2));1720 });1721 1722 });1723 ...

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rx-lite-async.js

Source:rx-lite-async.js Github

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1declare interface Rx$ObservableStatic {2 /​**3 * Invokes the asynchronous function, surfacing the result through an observable sequence.4 * @param functionAsync Asynchronous function which returns a Promise to run.5 * @returns An observable sequence exposing the function's result value, or an exception.6 */​7 startAsync<T>(functionAsync: () => IPromise<T>): Observable<T>;8 start<T>(func: () => T, context?: any, scheduler?: IScheduler): Observable<T>;9 toAsync<TResult>(10 func: () => TResult,11 context?: any,12 scheduler?: IScheduler13 ): () => Observable<TResult>;14 toAsync<T1, TResult>(15 func: (arg1: T1) => TResult,16 context?: any,17 scheduler?: IScheduler18 ): (arg1: T1) => Observable<TResult>;19 toAsync<T1, TResult>(20 func: (arg1?: T1) => TResult,21 context?: any,22 scheduler?: IScheduler23 ): (arg1?: T1) => Observable<TResult>;24 toAsync<T1, TResult>(25 func: (...args: T1[]) => TResult,26 context?: any,27 scheduler?: IScheduler28 ): (...args: T1[]) => Observable<TResult>;29 toAsync<T1, T2, TResult>(30 func: (arg1: T1, arg2: T2) => TResult,31 context?: any,32 scheduler?: IScheduler33 ): (arg1: T1, arg2: T2) => Observable<TResult>;34 toAsync<T1, T2, TResult>(35 func: (arg1: T1, arg2?: T2) => TResult,36 context?: any,37 scheduler?: IScheduler38 ): (arg1: T1, arg2?: T2) => Observable<TResult>;39 toAsync<T1, T2, TResult>(40 func: (arg1?: T1, arg2?: T2) => TResult,41 context?: any,42 scheduler?: IScheduler43 ): (arg1?: T1, arg2?: T2) => Observable<TResult>;44 toAsync<T1, T2, TResult>(45 func: (arg1: T1, ...args: T2[]) => TResult,46 context?: any,47 scheduler?: IScheduler48 ): (arg1: T1, ...args: T2[]) => Observable<TResult>;49 toAsync<T1, T2, TResult>(50 func: (arg1?: T1, ...args: T2[]) => TResult,51 context?: any,52 scheduler?: IScheduler53 ): (arg1?: T1, ...args: T2[]) => Observable<TResult>;54 toAsync<T1, T2, T3, TResult>(55 func: (arg1: T1, arg2: T2, arg3: T3) => TResult,56 context?: any,57 scheduler?: IScheduler58 ): (arg1: T1, arg2: T2, arg3: T3) => Observable<TResult>;59 toAsync<T1, T2, T3, TResult>(60 func: (arg1: T1, arg2: T2, arg3?: T3) => TResult,61 context?: any,62 scheduler?: IScheduler63 ): (arg1: T1, arg2: T2, arg3?: T3) => Observable<TResult>;64 toAsync<T1, T2, T3, TResult>(65 func: (arg1: T1, arg2?: T2, arg3?: T3) => TResult,66 context?: any,67 scheduler?: IScheduler68 ): (arg1: T1, arg2?: T2, arg3?: T3) => Observable<TResult>;69 toAsync<T1, T2, T3, TResult>(70 func: (arg1?: T1, arg2?: T2, arg3?: T3) => TResult,71 context?: any,72 scheduler?: IScheduler73 ): (arg1?: T1, arg2?: T2, arg3?: T3) => Observable<TResult>;74 toAsync<T1, T2, T3, TResult>(75 func: (arg1: T1, arg2: T2, ...args: T3[]) => TResult,76 context?: any,77 scheduler?: IScheduler78 ): (arg1: T1, arg2: T2, ...args: T3[]) => Observable<TResult>;79 toAsync<T1, T2, T3, TResult>(80 func: (arg1: T1, arg2?: T2, ...args: T3[]) => TResult,81 context?: any,82 scheduler?: IScheduler83 ): (arg1: T1, arg2?: T2, ...args: T3[]) => Observable<TResult>;84 toAsync<T1, T2, T3, TResult>(85 func: (arg1?: T1, arg2?: T2, ...args: T3[]) => TResult,86 context?: any,87 scheduler?: IScheduler88 ): (arg1?: T1, arg2?: T2, ...args: T3[]) => Observable<TResult>;89 toAsync<T1, T2, T3, T4, TResult>(90 func: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => TResult,91 context?: any,92 scheduler?: IScheduler93 ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Observable<TResult>;94 toAsync<T1, T2, T3, T4, TResult>(95 func: (arg1: T1, arg2: T2, arg3: T3, arg4?: T4) => TResult,96 context?: any,97 scheduler?: IScheduler98 ): (arg1: T1, arg2: T2, arg3: T3, arg4?: T4) => Observable<TResult>;99 toAsync<T1, T2, T3, T4, TResult>(100 func: (arg1: T1, arg2: T2, arg3?: T3, arg4?: T4) => TResult,101 context?: any,102 scheduler?: IScheduler103 ): (arg1: T1, arg2: T2, arg3?: T3, arg4?: T4) => Observable<TResult>;104 toAsync<T1, T2, T3, T4, TResult>(105 func: (arg1: T1, arg2?: T2, arg3?: T3, arg4?: T4) => TResult,106 context?: any,107 scheduler?: IScheduler108 ): (arg1: T1, arg2?: T2, arg3?: T3, arg4?: T4) => Observable<TResult>;109 toAsync<T1, T2, T3, T4, TResult>(110 func: (arg1?: T1, arg2?: T2, arg3?: T3, arg4?: T4) => TResult,111 context?: any,112 scheduler?: IScheduler113 ): (arg1?: T1, arg2?: T2, arg3?: T3, arg4?: T4) => Observable<TResult>;114 toAsync<T1, T2, T3, T4, TResult>(115 func: (arg1: T1, arg2: T2, arg3: T3, ...args: T4[]) => TResult,116 context?: any,117 scheduler?: IScheduler118 ): (arg1: T1, arg2: T2, arg3: T3, ...args: T4[]) => Observable<TResult>;119 toAsync<T1, T2, T3, T4, TResult>(120 func: (arg1: T1, arg2: T2, arg3?: T3, ...args: T4[]) => TResult,121 context?: any,122 scheduler?: IScheduler123 ): (arg1: T1, arg2: T2, arg3?: T3, ...args: T4[]) => Observable<TResult>;124 toAsync<T1, T2, T3, T4, TResult>(125 func: (arg1: T1, arg2?: T2, arg3?: T3, ...args: T4[]) => TResult,126 context?: any,127 scheduler?: IScheduler128 ): (arg1: T1, arg2?: T2, arg3?: T3, ...args: T4[]) => Observable<TResult>;129 toAsync<T1, T2, T3, T4, TResult>(130 func: (arg1?: T1, arg2?: T2, arg3?: T3, ...args: T4[]) => TResult,131 context?: any,132 scheduler?: IScheduler133 ): (arg1?: T1, arg2?: T2, arg3?: T3, ...args: T4[]) => Observable<TResult>;134}135declare module "rx-lite-async" {136 declare module.exports: typeof Rx;...

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61toasync.js

Source:61toasync.js Github

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...13test('Observable.toAsync context', function (t) {14 var context = { value: 42 };15 var scheduler = new TestScheduler();16 var results = scheduler.startScheduler(function () {17 return Observable.toAsync(function (x) {18 return this.value + x;19 }, context, scheduler)(42);20 });21 reactiveAssert(t, results.messages, [22 onNext(200, 84),23 onCompleted(200)24 ]);25 t.end();26});27test('Observable.toAsync 0', function (t) {28 var scheduler = new TestScheduler();29 var results = scheduler.startScheduler(function () {30 return Observable.toAsync(function () {31 return 0;32 }, null, scheduler)();33 });34 reactiveAssert(t, results.messages, [35 onNext(200, 0),36 onCompleted(200)37 ]);38 t.end();39});40test('Observable.toAsync 1', function (t) {41 var scheduler = new TestScheduler();42 var results = scheduler.startScheduler(function () {43 return Observable.toAsync(function (x) {44 return x;45 }, null, scheduler)(1);46 });47 reactiveAssert(t, results.messages, [48 onNext(200, 1),49 onCompleted(200)50 ]);51 t.end();52});53test('Observable.toAsync 2', function (t) {54 var scheduler = new TestScheduler();55 var results = scheduler.startScheduler(function () {56 return Observable.toAsync(function (x, y) {57 return x + y;58 }, null, scheduler)(1, 2);59 });60 reactiveAssert(t, results.messages, [61 onNext(200, 3),62 onCompleted(200)63 ]);64 t.end();65});66test('Observable.toAsync 3', function (t) {67 var scheduler = new TestScheduler();68 var results = scheduler.startScheduler(function () {69 return Observable.toAsync(function (x, y, z) {70 return x + y + z;71 }, null, scheduler)(1, 2, 3);72 });73 reactiveAssert(t, results.messages, [74 onNext(200, 6),75 onCompleted(200)76 ]);77 t.end();78});79test('Observable.toAsync 4', function (t) {80 var scheduler = new TestScheduler();81 var results = scheduler.startScheduler(function () {82 return Observable.toAsync(function (a, b, c, d) {83 return a + b + c + d;84 }, null, scheduler)(1, 2, 3, 4);85 });86 reactiveAssert(t, results.messages, [87 onNext(200, 10),88 onCompleted(200)89 ]);90 t.end();91});92test('Observable.toAsync error', function (t) {93 var error = new Error();94 var scheduler = new TestScheduler();95 var results = scheduler.startScheduler(function () {96 return Observable.toAsync(function () {97 throw error;98 }, null, scheduler)();99 });100 reactiveAssert(t, results.messages, [101 onError(200, error)102 ]);103 t.end();...

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toasync.js

Source:toasync.js Github

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...13test('Observable.toAsync context', function (t) {14 var context = { value: 42 };15 var scheduler = new TestScheduler();16 var results = scheduler.startScheduler(function () {17 return Observable.toAsync(function (x) {18 return this.value + x;19 }, context, scheduler)(42);20 });21 reactiveAssert(t, results.messages, [22 onNext(200, 84),23 onCompleted(200)24 ]);25 t.end();26});27test('Observable.toAsync 0', function (t) {28 var scheduler = new TestScheduler();29 var results = scheduler.startScheduler(function () {30 return Observable.toAsync(function () {31 return 0;32 }, null, scheduler)();33 });34 reactiveAssert(t, results.messages, [35 onNext(200, 0),36 onCompleted(200)37 ]);38 t.end();39});40test('Observable.toAsync 1', function (t) {41 var scheduler = new TestScheduler();42 var results = scheduler.startScheduler(function () {43 return Observable.toAsync(function (x) {44 return x;45 }, null, scheduler)(1);46 });47 reactiveAssert(t, results.messages, [48 onNext(200, 1),49 onCompleted(200)50 ]);51 t.end();52});53test('Observable.toAsync 2', function (t) {54 var scheduler = new TestScheduler();55 var results = scheduler.startScheduler(function () {56 return Observable.toAsync(function (x, y) {57 return x + y;58 }, null, scheduler)(1, 2);59 });60 reactiveAssert(t, results.messages, [61 onNext(200, 3),62 onCompleted(200)63 ]);64 t.end();65});66test('Observable.toAsync 3', function (t) {67 var scheduler = new TestScheduler();68 var results = scheduler.startScheduler(function () {69 return Observable.toAsync(function (x, y, z) {70 return x + y + z;71 }, null, scheduler)(1, 2, 3);72 });73 reactiveAssert(t, results.messages, [74 onNext(200, 6),75 onCompleted(200)76 ]);77 t.end();78});79test('Observable.toAsync 4', function (t) {80 var scheduler = new TestScheduler();81 var results = scheduler.startScheduler(function () {82 return Observable.toAsync(function (a, b, c, d) {83 return a + b + c + d;84 }, null, scheduler)(1, 2, 3, 4);85 });86 reactiveAssert(t, results.messages, [87 onNext(200, 10),88 onCompleted(200)89 ]);90 t.end();91});92test('Observable.toAsync error', function (t) {93 var error = new Error();94 var scheduler = new TestScheduler();95 var results = scheduler.startScheduler(function () {96 return Observable.toAsync(function () {97 throw error;98 }, null, scheduler)();99 });100 reactiveAssert(t, results.messages, [101 onError(200, error)102 ]);103 t.end();...

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60toasync.js

Source:60toasync.js Github

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...11 test('toAsync context', function () {12 var context = { value: 42 };13 var scheduler = new TestScheduler();14 var results = scheduler.startScheduler(function () {15 return Observable.toAsync(function (x) {16 return this.value + x;17 }, context, scheduler)(42);18 });19 results.messages.assertEqual(20 onNext(200, 84),21 onCompleted(200)22 );23 });24 test('toAsync 0', function () {25 var scheduler = new TestScheduler();26 var results = scheduler.startScheduler(function () {27 return Observable.toAsync(function () {28 return 0;29 }, null, scheduler)();30 });31 results.messages.assertEqual(32 onNext(200, 0),33 onCompleted(200)34 );35 });36 test('toAsync 1', function () {37 var scheduler = new TestScheduler();38 var results = scheduler.startScheduler(function () {39 return Observable.toAsync(function (x) {40 return x;41 }, null, scheduler)(1);42 });43 results.messages.assertEqual(44 onNext(200, 1),45 onCompleted(200)46 );47 });48 test('toAsync 2', function () {49 var scheduler = new TestScheduler();50 var results = scheduler.startScheduler(function () {51 return Observable.toAsync(function (x, y) {52 return x + y;53 }, null, scheduler)(1, 2);54 });55 results.messages.assertEqual(56 onNext(200, 3),57 onCompleted(200)58 );59 });60 test('toAsync 3', function () {61 var scheduler = new TestScheduler();62 var results = scheduler.startScheduler(function () {63 return Observable.toAsync(function (x, y, z) {64 return x + y + z;65 }, null, scheduler)(1, 2, 3);66 });67 results.messages.assertEqual(68 onNext(200, 6),69 onCompleted(200)70 );71 });72 test('toAsync 4', function () {73 var scheduler = new TestScheduler();74 var results = scheduler.startScheduler(function () {75 return Observable.toAsync(function (a, b, c, d) {76 return a + b + c + d;77 }, null, scheduler)(1, 2, 3, 4);78 });79 results.messages.assertEqual(80 onNext(200, 10),81 onCompleted(200)82 );83 });84 test('toAsync error', function () {85 var error = new Error();86 var scheduler = new TestScheduler();87 var results = scheduler.startScheduler(function () {88 return Observable.toAsync(function () {89 throw error;90 }, null, scheduler)();91 });92 results.messages.assertEqual(93 onError(200, error)94 );95 });...

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_index.js

Source:_index.js Github

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...52 if (typeof options == "function") {53 fn = options54 options = {}55 }56 var toAsync = function toAsync() {57 var self = this58 setImmediate(function later() {59 var val = fn()60 if (val === undefined) {61 val = null62 }63 self.push(val)64 })65 }66 return make(options, toAsync)...

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sample5.js

Source:sample5.js Github

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...16(() => {17 const st = process.hrtime();18 console.log(`start: ${process.hrtime(st)}`);19 const p = Promise.resolve(1)20 .then(pu.toAsync(inc,10))21 .then(pu.toAsync(inc,10))22 .then(pu.toAsync(inc,10))23 .then(pu.toAsync(inc,10))24 ;25 pu.displayPromise(p.then((v) => {26 console.log(`end: ${process.hrtime(st)}`);27 return v;28 }));29})();30(() => {31 const st = process.hrtime();32 console.log(`start: ${process.hrtime(st)}`);33 const p = Promise.resolve(1)34 .then(pu.toAsync(inc,10))35 .then(pu.toAsync(inc,10))36 .then(pu.toAsync(inc,10))37 .then(pu.toAsync(inc,10))38 ;39 const q = Promise.all([p, p]).then(pu.toAsync(toMulti(add), 100));40 pu.displayPromise(q.then((v) => {41 console.log(`end: ${process.hrtime(st)}`);42 return v;43 }));...

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test_rx-lite-async.js

Source:test_rx-lite-async.js Github

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...7 obsNum = Rx.Observable.start(() => 10, obsStr, sch);8 obsNum = Rx.Observable.start(() => 10, obsStr);9 obsNum = Rx.Observable.start(() => 10);10}11function toAsync() {12 obsNum = Rx.Observable.toAsync(() => 1, sch)();13 obsNum = Rx.Observable.toAsync((a1: number) => a1)(1);14 obsStr = <any> Rx.Observable.toAsync((a1: string, a2: number) => a1 + a2.toFixed(0))("", 1);15 obsStr = <any> Rx.Observable.toAsync((a1: string, a2: number, a3: Date) => a1 + a2.toFixed(0) + a3.toDateString())("", 1, new Date());16 obsStr = <any> Rx.Observable.toAsync((a1: string, a2: number, a3: Date, a4: boolean) => a1 + a2.toFixed(0) + a3.toDateString() + (a4 ? 1 : 0))("", 1, new Date(), false);17}18function startAsync() {19 const o: Rx.Observable<string> = Rx.Observable.startAsync(() => <Rx.IPromise<string>> {});...

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Using AI Code Generation

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1const { toAsync } = require('@playwright/​test/​lib/​utils/​async');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const title = await page.title();8 console.log(title);9 await browser.close();10})();11const { toAsync } = require('@playwright/​test/​lib/​utils/​async');12const { chromium } = require('playwright');13(async () => {14 const browser = await toAsync(chromium.launch)();15 const context = await toAsync(browser.newContext)();16 const page = await toAsync(context.newPage)();17 const title = await toAsync(page.title)();18 console.log(title);19 await toAsync(browser.close)();20})();21[Apache 2.0](LICENSE)

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Using AI Code Generation

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1const { toAsync } = require('@playwright/​test/​lib/​utils/​async');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 const title = await page.title();7 console.log(title);8 const text = await page.textContent('text=Get started');9 console.log(text);10 const href = await page.getAttribute('css=nav a:nth-of-type(2)', 'href');11 console.log(href);12 await browser.close();13})();14const { toAsync } = require('@playwright/​test/​lib/​utils/​async');15const { chromium } = require('playwright');16(async () => {17 const browser = await chromium.launch();18 const page = await browser.newPage();19 const title = await page.title();20 console.log(title);21 const text = await page.textContent('text=Get started');22 console.log(text);23 const href = await page.getAttribute('css=nav a:nth-of-type(2)', 'href');24 console.log(href);25 await browser.close();26})();27const { toAsync } = require('@playwright/​test/​lib/​utils/​async');28const { chromium } = require('playwright');29(async () => {30 const browser = await chromium.launch();31 const page = await browser.newPage();32 const title = await page.title();33 console.log(title);34 const text = await page.textContent('text=Get started');35 console.log(text);36 const href = await page.getAttribute('css=nav a

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Using AI Code Generation

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1const { toAsync } = require('playwright/​lib/​utils/​utils');2const { chromium } = require('playwright');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 await toAsync(page.waitForSelector)('text=Get started');7 await browser.close();8})();9import { toAsync } from 'playwright/​lib/​utils/​utils';10import { chromium } from 'playwright';11(async () => {12 const browser = await chromium.launch();13 const page = await browser.newPage();14 await toAsync(page.waitForSelector)('text=Get started');15 await browser.close();16})();

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Using AI Code Generation

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1const { toAsync } = require('playwright-core/​lib/​utils/​async');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const page = await browser.newPage();6 const asyncPage = toAsync(page);7 console.log(await asyncPage.title());8 await browser.close();9})();

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Using AI Code Generation

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1const { toAsync } = require('playwright/​lib/​utils/​async');2const { chromium } = require('playwright');3const { toMatchImageSnapshot } = require('jest-image-snapshot');4expect.extend({ toMatchImageSnapshot });5(async () => {6 const browser = await chromium.launch();7 const page = await browser.newPage();8 await page.setViewportSize({ width: 1280, height: 800 });9 await page.screenshot({ path: 'example.png' });10 expect(await page.screenshot()).toMatchImageSnapshot();11 await browser.close();12})();13module.exports = {14};15{16 "scripts": {17 },18 "devDependencies": {19 }20}21 expect(received).toMatchImageSnapshot(snapshotIdentifier)

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Using AI Code Generation

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1const { toAsync } = require('playwright/​lib/​utils/​async');2const fs = require('fs');3const path = require('path');4const { chromium } = require('playwright');5const { expect } = require('@playwright/​test');6const { test, expect } = require('@playwright/​test');7const { describe, it } = require('@playwright/​test');8const { beforeAll, afterAll } = require('@playwright/​test');9const { beforeEach, afterEach } = require('@playwright/​test');10const { test, expect } = require('@playwright/​test');11const { describe, it } = require('@playwright/​test');12const { beforeAll, afterAll } = require('@playwright/​test');13const { beforeEach, afterEach } = require('@playwright/​test');14const { chromium } = require('playwright');15const fs = require('fs');16const path = require('path');17const { toAsync } = require('playwright/​lib/​utils/​async');18const { test, expect } = require('@playwright/​test');19const { describe, it } = require('@playwright/​test');20const { beforeAll, afterAll } = require('@playwright/​test');21const { beforeEach, afterEach } = require('@playwright/​test');22const { chromium } = require('playwright');23const fs = require('fs');24const path = require('path');25const { toAsync } = require('playwright/​lib/​utils/​async');26const { test, expect } = require('@playwright/​test');27const { describe, it } = require('@playwright/​test');28const { beforeAll, afterAll } = require('@playwright/​test');29const { beforeEach, afterEach } = require('@playwright/​test');30const { chromium } = require('playwright');31const fs = require('fs');32const path = require('path');33const { toAsync } = require('playwright/​lib/​utils/​async');34const { toAsync } = require('playwright/​lib/​utils/​async');35const fs = require('fs');36const path = require('path');37const { toAsync } = require('playwright/​lib/​utils/​async');38const fs = require('fs');39const path = require('path');40const { toAsync } = require('playwright/​lib

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Using AI Code Generation

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1const { toAsync } = require("playwright-core/​lib/​utils/​utils");2const { chromium } = require("playwright-core");3const browser = await chromium.launch();4const page = await browser.newPage();5const myFunc = toAsync(async (a, b, c) => {6 return a + b + c;7});8const result = await myFunc(1, 2, 3);9console.log(result);10await browser.close();

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Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

  1. What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
  2. How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
  3. Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
  4. What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
  7. Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
  8. Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
  9. Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
  10. Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
  11. Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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