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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 library jsArrayTest; | |
6 | |
7 import 'dart:html'; | |
8 import 'dart:js'; | |
9 | |
10 import 'package:unittest/unittest.dart'; | |
11 import 'package:unittest/html_config.dart'; | |
12 | |
13 _injectJs() { | |
14 document.body.append(new ScriptElement() | |
15 ..type = 'text/javascript' | |
16 ..innerHtml = r""" | |
17 function callJsMethod(jsObj, jsMethodName, args) { | |
18 return jsObj[jsMethodName].apply(jsObj, args); | |
19 } | |
20 | |
21 function jsEnumerateIndices(obj) { | |
22 var ret = []; | |
23 for(var i in obj) { | |
24 ret.push(i); | |
25 } | |
26 return ret; | |
27 } | |
28 | |
29 function setValue(obj, index, value) { | |
30 return obj[index] = value; | |
31 } | |
32 | |
33 function getValue(obj, index) { | |
34 return obj[index]; | |
35 } | |
36 | |
37 function checkIsArray(obj) { | |
38 return Array.isArray(obj); | |
39 } | |
40 | |
41 function concatValues(obj) { | |
42 return obj.concat("a", "b", ["c", "d"], 42, {foo: 10}); | |
43 } | |
44 | |
45 function concatOntoArray(obj) { | |
46 return [1,2,3].concat(obj, "foo"); | |
47 } | |
48 | |
49 function repeatedConcatOntoArray(obj) { | |
50 return [1,2,3].concat(obj, obj); | |
51 } | |
52 | |
53 function everyGreaterThanZero(obj) { | |
54 return obj.every(function(currentValue, index, array) { | |
55 return currentValue > 0; | |
56 }); | |
57 } | |
58 | |
59 function everyGreaterThanZeroCheckThisArg(obj) { | |
60 var j = 0; | |
61 return obj.every(function(currentValue, index, array) { | |
62 if (j != index) { | |
63 throw "Unxpected index"; | |
64 } | |
65 j++; | |
66 if (array !== obj) { | |
67 throw "Array argument doesn't match obj"; | |
68 } | |
69 return currentValue > 0; | |
70 }); | |
71 } | |
72 | |
73 function filterGreater42(obj) { | |
74 return obj.filter(function(currentValue, index, array) { | |
75 return currentValue > 42; | |
76 }); | |
77 } | |
78 | |
79 function forEachCollectResult(array, callback) { | |
80 var result = []; | |
81 array.forEach(function(currentValue) { | |
82 result.push(currentValue * 2); | |
83 }); | |
84 return result; | |
85 } | |
86 | |
87 function someEqual42(array, callback) { | |
88 return array.some(function(currentValue) { | |
89 return currentValue == 42; | |
90 }); | |
91 } | |
92 | |
93 function sortNumbersBackwards(array) { | |
94 return array.sort(function(a, b) { | |
95 return b - a; | |
96 }); | |
97 } | |
98 | |
99 function spliceDummyItems(array) { | |
100 return array.splice(1, 2, "quick" ,"brown", "fox"); | |
101 } | |
102 | |
103 function spliceTestStringArgs(array) { | |
104 return array.splice("1.2", "2.01", "quick" ,"brown", "fox"); | |
105 } | |
106 | |
107 function splicePastEnd(array) { | |
108 return array.splice(1, 5332, "quick" ,"brown", "fox"); | |
109 } | |
110 | |
111 function callJsToString(array) { | |
112 return array.toString(); | |
113 } | |
114 | |
115 function mapAddIndexToEachElement(array) { | |
116 return array.map(function(currentValue, index) { | |
117 return currentValue + index; | |
118 }); | |
119 } | |
120 | |
121 function reduceSumDoubledElements(array) { | |
122 return array.reduce(function(previousValue, currentValue) { | |
123 return previousValue + currentValue*2; | |
124 }, | |
125 0); | |
126 } | |
127 | |
128 // TODO(jacobr): add a test that distinguishes reduce from reduceRight. | |
129 function reduceRightSumDoubledElements(array) { | |
130 return array.reduceRight( | |
131 function(previousValue, currentValue) { | |
132 return previousValue + currentValue*2; | |
133 }, | |
134 0); | |
135 } | |
136 | |
137 function identical(o1, o2) { | |
138 return o1 === o2; | |
139 } | |
140 | |
141 function getOwnPropertyDescriptorJson(array, property) { | |
142 return JSON.stringify(Object.getOwnPropertyDescriptor(array, property)); | |
143 } | |
144 | |
145 function setLength(array, len) { | |
146 return array.length = len; | |
147 } | |
148 | |
149 """); | |
150 } | |
151 | |
152 class Foo {} | |
153 | |
154 callJsMethod(List array, String methodName, List args) => | |
155 context.callMethod("callJsMethod", [array, methodName, args]); | |
156 | |
157 callIndexOf(List array, value) => callJsMethod(array, "indexOf", [value]); | |
158 callLastIndexOf(List array, value) => | |
159 callJsMethod(array, "lastIndexOf", [value]); | |
160 | |
161 callPop(List array) => callJsMethod(array, "pop", []); | |
162 callPush(List array, element) => callJsMethod(array, "push", [element]); | |
163 callShift(List array) => callJsMethod(array, "shift", []); | |
164 callReverse(List array) => callJsMethod(array, "reverse", []); | |
165 callSetLength(List array, length) => | |
166 context.callMethod("setLength", [array, length]); | |
167 | |
168 main() { | |
169 _injectJs(); | |
170 useHtmlConfiguration(); | |
171 | |
172 group('indexOf', () { | |
173 var div = new DivElement(); | |
174 var list = [3, 42, "foo", 42, div]; | |
175 test('found', () { | |
176 expect(callIndexOf(list, 3), equals(0)); | |
177 expect(callIndexOf(list, 42), equals(1)); | |
178 expect(callIndexOf(list, "foo"), equals(2)); | |
179 expect(callIndexOf(list, div), equals(4)); | |
180 }); | |
181 | |
182 test('missing', () { | |
183 expect(callIndexOf(list, 31), equals(-1)); | |
184 expect(callIndexOf(list, "42"), equals(-1)); | |
185 expect(callIndexOf(list, null), equals(-1)); | |
186 }); | |
187 }); | |
188 | |
189 group('set length', () { | |
190 test('larger', () { | |
191 var list = ["a", "b", "c", "d"]; | |
192 expect(callSetLength(list, 10), equals(10)); | |
193 expect(list.length, equals(10)); | |
194 expect(list.last, equals(null)); | |
195 expect(list[3], equals("d")); | |
196 }); | |
197 | |
198 test('smaller', () { | |
199 var list = ["a", "b", "c", "d"]; | |
200 expect(callSetLength(list, 2), equals(2)); | |
201 expect(list.first, equals("a")); | |
202 expect(list.last, equals("b")); | |
203 expect(list.length, equals(2)); | |
204 expect(callSetLength(list, 0), equals(0)); | |
205 expect(list.length, equals(0)); | |
206 expect(callSetLength(list, 2), equals(2)); | |
207 expect(list.first, equals(null)); | |
208 }); | |
209 | |
210 test('invalid', () { | |
211 var list = ["a", "b", "c", "d"]; | |
212 expect(() => callSetLength(list, 2.3), throws); | |
213 expect(list.length, equals(4)); | |
214 expect(() => callSetLength(list, -1), throws); | |
215 expect(list.length, equals(4)); | |
216 // Make sure we are coercing to a JS number. | |
217 expect(callSetLength(list, "2"), equals("2")); | |
218 expect(list.length, equals(2)); | |
219 }); | |
220 }); | |
221 | |
222 group('join', () { | |
223 var list = [3, 42, "foo"]; | |
224 var listWithDartClasses = [3, new Foo(), 42, "foo", new Object()]; | |
225 test('default', () { | |
226 expect(callJsMethod(list, "join", []), equals("3,42,foo")); | |
227 expect(callJsMethod(listWithDartClasses, "join", []), | |
228 equals("3,Instance of 'Foo',42,foo,Instance of 'Object'")); | |
229 }); | |
230 | |
231 test('custom separator', () { | |
232 expect(callJsMethod(list, "join", ["##"]), equals("3##42##foo")); | |
233 }); | |
234 }); | |
235 | |
236 group('lastIndexOf', () { | |
237 var list = [3, 42, "foo", 42]; | |
238 test('found', () { | |
239 expect(callLastIndexOf(list, 3), equals(0)); | |
240 expect(callLastIndexOf(list, 42), equals(3)); | |
241 expect(callLastIndexOf(list, "foo"), equals(2)); | |
242 }); | |
243 | |
244 test('missing', () { | |
245 expect(callLastIndexOf(list, 31), equals(-1)); | |
246 expect(callLastIndexOf(list, "42"), equals(-1)); | |
247 expect(callLastIndexOf(list, null), equals(-1)); | |
248 }); | |
249 }); | |
250 | |
251 group('pop', () { | |
252 test('all', () { | |
253 var foo = new Foo(); | |
254 var div = new DivElement(); | |
255 var list = [3, 42, "foo", foo, div]; | |
256 expect(callPop(list), equals(div)); | |
257 expect(list.length, equals(4)); | |
258 expect(callPop(list), equals(foo)); | |
259 expect(list.length, equals(3)); | |
260 expect(callPop(list), equals("foo")); | |
261 expect(list.length, equals(2)); | |
262 expect(callPop(list), equals(42)); | |
263 expect(list.length, equals(1)); | |
264 expect(callPop(list), equals(3)); | |
265 expect(list.length, equals(0)); | |
266 expect(callPop(list), equals(null)); | |
267 expect(list.length, equals(0)); | |
268 }); | |
269 }); | |
270 | |
271 group('push', () { | |
272 test('strings', () { | |
273 var list = []; | |
274 var div = new DivElement(); | |
275 expect(callPush(list, "foo"), equals(1)); | |
276 expect(callPush(list, "bar"), equals(2)); | |
277 expect(callPush(list, "baz"), equals(3)); | |
278 expect(callPush(list, div), equals(4)); | |
279 expect(list, equals(["foo", "bar", "baz", div])); | |
280 }); | |
281 }); | |
282 | |
283 group('shift', () { | |
284 test('all', () { | |
285 var foo = new Foo(); | |
286 var div = new DivElement(); | |
287 var list = [3, 42, "foo", foo, div]; | |
288 expect(callShift(list), equals(3)); | |
289 expect(list.length, equals(4)); | |
290 expect(callShift(list), equals(42)); | |
291 expect(list.length, equals(3)); | |
292 expect(callShift(list), equals("foo")); | |
293 expect(list.length, equals(2)); | |
294 expect(callShift(list), equals(foo)); | |
295 expect(list.length, equals(1)); | |
296 expect(callShift(list), equals(div)); | |
297 expect(list.length, equals(0)); | |
298 expect(callShift(list), equals(null)); | |
299 expect(list.length, equals(0)); | |
300 }); | |
301 }); | |
302 | |
303 group('reverse', () { | |
304 test('simple', () { | |
305 var foo = new Foo(); | |
306 var div = new DivElement(); | |
307 var list = [div, 42, foo]; | |
308 callReverse(list); | |
309 expect(list, equals([foo, 42, div])); | |
310 list = [3, 42]; | |
311 callReverse(list); | |
312 expect(list, equals([42, 3])); | |
313 }); | |
314 }); | |
315 | |
316 group('slice', () { | |
317 test('copy', () { | |
318 var foo = new Foo(); | |
319 var div = new DivElement(); | |
320 var list = [3, 42, "foo", foo, div]; | |
321 var copy = callJsMethod(list, "slice", []); | |
322 expect(identical(list, copy), isFalse); | |
323 expect(copy.length, equals(list.length)); | |
324 for (var i = 0; i < list.length; i++) { | |
325 expect(list[i], equals(copy[i])); | |
326 } | |
327 expect(identical(list[3], copy[3]), isTrue); | |
328 expect(identical(list[4], copy[4]), isTrue); | |
329 | |
330 copy.add("dummy"); | |
331 expect(list.length + 1, equals(copy.length)); | |
332 }); | |
333 | |
334 test('specify start', () { | |
335 var list = [3, 42, "foo"]; | |
336 var copy = callJsMethod(list, "slice", [1]); | |
337 expect(copy.first, equals(42)); | |
338 }); | |
339 | |
340 test('specify start and end', () { | |
341 var list = [3, 42, 92, "foo"]; | |
342 var copy = callJsMethod(list, "slice", [1, 3]); | |
343 expect(copy.first, equals(42)); | |
344 expect(copy.last, equals(92)); | |
345 }); | |
346 | |
347 test('from end', () { | |
348 var list = [3, 42, 92, "foo"]; | |
349 expect(callJsMethod(list, "slice", [-2]), equals([92, "foo"])); | |
350 | |
351 // Past the end of the front of the array. | |
352 expect(callJsMethod(list, "slice", [-2, 3]), equals([92])); | |
353 | |
354 // Past the end of the front of the array. | |
355 expect(callJsMethod(list, "slice", [-10, 2]), equals([3, 42])); | |
356 }); | |
357 }); | |
358 | |
359 group("js snippet tests", () { | |
360 test("enumerate indices", () { | |
361 var list = ["a", "b", "c", "d"]; | |
362 var indices = context.callMethod('jsEnumerateIndices', [list]); | |
363 expect(indices.length, equals(4)); | |
364 for (int i = 0; i < 4; i++) { | |
365 expect(indices[i], equals('$i')); | |
366 } | |
367 }); | |
368 | |
369 test("set element", () { | |
370 var list = ["a", "b", "c", "d"]; | |
371 context.callMethod('setValue', [list, 0, 42]); | |
372 expect(list[0], equals(42)); | |
373 context.callMethod('setValue', [list, 1, 84]); | |
374 expect(list[1], equals(84)); | |
375 context.callMethod( | |
376 'setValue', [list, 6, 100]); // Off the end of the list. | |
377 expect(list.length, equals(7)); | |
378 expect(list[4], equals(null)); | |
379 expect(list[6], equals(100)); | |
380 | |
381 // These tests have to be commented out because we don't persist | |
382 // JS proxies for Dart objects like we could/should. | |
383 // context.callMethod('setValue', [list, -1, "foo"]); // Not a valid index | |
384 // expect(context.callMethod('getValue', [list, -1]), equals("foo")); | |
385 // expect(context.callMethod('getValue', [list, "-1"]), equals("foo")); | |
386 }); | |
387 | |
388 test("get element", () { | |
389 var list = ["a", "b", "c", "d"]; | |
390 expect(context.callMethod('getValue', [list, 0]), equals("a")); | |
391 expect(context.callMethod('getValue', [list, 1]), equals("b")); | |
392 expect(context.callMethod('getValue', [list, 6]), equals(null)); | |
393 expect(context.callMethod('getValue', [list, -1]), equals(null)); | |
394 | |
395 expect(context.callMethod('getValue', [list, "0"]), equals("a")); | |
396 expect(context.callMethod('getValue', [list, "1"]), equals("b")); | |
397 }); | |
398 | |
399 test("is array", () { | |
400 var list = ["a", "b"]; | |
401 expect(context.callMethod("checkIsArray", [list]), isTrue); | |
402 }); | |
403 | |
404 test("property descriptors", () { | |
405 // This test matters to make behavior consistent with JS native arrays | |
406 // and to make devtools integration work well. | |
407 var list = ["a", "b"]; | |
408 expect(context.callMethod("getOwnPropertyDescriptorJson", [list, 0]), | |
409 equals('{"value":"a",' | |
410 '"writable":true,' | |
411 '"enumerable":true,' | |
412 '"configurable":true}')); | |
413 | |
414 expect( | |
415 context.callMethod("getOwnPropertyDescriptorJson", [list, "length"]), | |
416 equals('{"value":2,' | |
417 '"writable":true,' | |
418 '"enumerable":false,' | |
419 '"configurable":false}')); | |
420 }); | |
421 | |
422 test("concat js arrays", () { | |
423 var list = ["1", "2"]; | |
424 // Tests that calling the concat method from JS will flatten out JS arrays | |
425 // We concat the array with "a", "b", ["c", "d"], 42, {foo: 10} | |
426 // which should generate ["1", "2", "a", "b", ["c", "d"], 42, {foo: 10}] | |
427 var ret = context.callMethod("concatValues", [list]); | |
428 expect(list.length, equals(2)); | |
429 expect(ret.length, equals(8)); | |
430 expect(ret[0], equals("1")); | |
431 expect(ret[3], equals("b")); | |
432 expect(ret[5], equals("d")); | |
433 expect(ret[6], equals(42)); | |
434 expect(ret[7]['foo'], equals(10)); | |
435 }); | |
436 | |
437 test("concat onto arrays", () { | |
438 // This test only passes if we have monkey patched the core Array object | |
439 // prototype to handle Dart Lists. | |
440 var list = ["a", "b"]; | |
441 var ret = context.callMethod("concatOntoArray", [list]); | |
442 expect(list.length, equals(2)); | |
443 expect(ret, equals([1, 2, 3, "a", "b", "foo"])); | |
444 }); | |
445 | |
446 test("dart arrays on dart arrays", () { | |
447 // This test only passes if we have monkey patched the core Array object | |
448 // prototype to handle Dart Lists. | |
449 var list = ["a", "b"]; | |
450 var ret = callJsMethod(list, "concat", [["c", "d"], "e", ["f", "g"]]); | |
451 expect(list.length, equals(2)); | |
452 expect(ret, equals(["a", "b", "c", "d", "e", "f", "g"])); | |
453 }); | |
454 | |
455 test("every greater than zero", () { | |
456 expect(context.callMethod("everyGreaterThanZero", [[1, 5]]), isTrue); | |
457 expect(context.callMethod("everyGreaterThanZeroCheckThisArg", [[1, 5]]), | |
458 isTrue); | |
459 expect(context.callMethod("everyGreaterThanZero", [[1, 0]]), isFalse); | |
460 expect(context.callMethod("everyGreaterThanZero", [[]]), isTrue); | |
461 }); | |
462 | |
463 test("filter greater than 42", () { | |
464 expect(context.callMethod("filterGreater42", [[1, 5]]), equals([])); | |
465 expect(context.callMethod("filterGreater42", [[43, 5, 49]]), | |
466 equals([43, 49])); | |
467 expect(context.callMethod("filterGreater42", [["43", "5", "49"]]), | |
468 equals(["43", "49"])); | |
469 }); | |
470 | |
471 test("for each collect result", () { | |
472 expect(context.callMethod("forEachCollectResult", [[1, 5, 7]]), | |
473 equals([2, 10, 14])); | |
474 }); | |
475 | |
476 test("some", () { | |
477 expect(context.callMethod("someEqual42", [[1, 5, 9]]), isFalse); | |
478 expect(context.callMethod("someEqual42", [[1, 42, 9]]), isTrue); | |
479 }); | |
480 | |
481 test("sort backwards", () { | |
482 var arr = [1, 5, 9]; | |
483 var ret = context.callMethod("sortNumbersBackwards", [arr]); | |
484 expect(identical(arr, ret), isTrue); | |
485 expect(ret, equals([9, 5, 1])); | |
486 }); | |
487 | |
488 test("splice dummy items", () { | |
489 var list = [1, 2, 3, 4]; | |
490 var removed = context.callMethod("spliceDummyItems", [list]); | |
491 expect(removed.length, equals(2)); | |
492 expect(removed[0], equals(2)); | |
493 expect(removed[1], equals(3)); | |
494 expect(list.first, equals(1)); | |
495 expect(list[1], equals("quick")); | |
496 expect(list[2], equals("brown")); | |
497 expect(list[3], equals("fox")); | |
498 expect(list.last, equals(4)); | |
499 }); | |
500 | |
501 test("splice string args", () { | |
502 var list = [1, 2, 3, 4]; | |
503 var removed = context.callMethod("spliceTestStringArgs", [list]); | |
504 expect(removed.length, equals(2)); | |
505 expect(removed[0], equals(2)); | |
506 expect(removed[1], equals(3)); | |
507 expect(list.first, equals(1)); | |
508 expect(list[1], equals("quick")); | |
509 expect(list[2], equals("brown")); | |
510 expect(list[3], equals("fox")); | |
511 expect(list.last, equals(4)); | |
512 }); | |
513 | |
514 test("splice pastEndOfArray", () { | |
515 var list = [1, 2, 3, 4]; | |
516 var removed = context.callMethod("splicePastEnd", [list]); | |
517 expect(removed.length, equals(3)); | |
518 expect(list.first, equals(1)); | |
519 expect(list.length, equals(4)); | |
520 expect(list[1], equals("quick")); | |
521 expect(list[2], equals("brown")); | |
522 expect(list[3], equals("fox")); | |
523 }); | |
524 | |
525 test("splice both bounds past end of array", () { | |
526 var list = [1]; | |
527 var removed = context.callMethod("splicePastEnd", [list]); | |
528 expect(removed.length, equals(0)); | |
529 expect(list.first, equals(1)); | |
530 expect(list.length, equals(4)); | |
531 expect(list[1], equals("quick")); | |
532 expect(list[2], equals("brown")); | |
533 expect(list[3], equals("fox")); | |
534 }); | |
535 }); | |
536 | |
537 // This test group is disabled until we figure out an efficient way to | |
538 // distinguish between "array" Dart List types and non-array Dart list types. | |
539 /* | |
540 group('Non-array Lists', () { | |
541 test('opaque proxy', () { | |
542 // Dartium could easily support making LinkedList and all other classes | |
543 // implementing List behave like a JavaScript array but that would | |
544 // be challenging to implement in dart2js until browsers support ES6. | |
545 var list = ["a", "b", "c", "d"]; | |
546 var listView = new UnmodifiableListView(list.getRange(1,3)); | |
547 expect(listView is List, isTrue); | |
548 expect(listView.length, equals(2)); | |
549 expect(context.callMethod("checkIsArray", [listView]), isFalse); | |
550 expect(context.callMethod("checkIsArray", [listView.toList()]), isTrue); | |
551 expect(context.callMethod("getOwnPropertyDescriptorJson", | |
552 [listView, "length"]), equals("null")); | |
553 }); | |
554 }); | |
555 */ | |
556 } | |
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