blob: 3b1faa465679dcf0bf9856ed8f1f7f872ff0472a [file] [log] [blame]
 // TODO(multitest): This was automatically migrated from a multitest and may // contain strange or dead code. // @dart = 2.9 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. // Simple test program for sync* generator functions. // VMOptions=--optimization_counter_threshold=10 import "package:expect/expect.dart"; sum10() sync* { var s = 0; for (var k = 1; k <= 10; k++) { s += k; yield s; } } class Range { int start, end; Range(this.start, this.end); elements() sync* { var e = start; while (e <= end) yield e++; } get yield sync* { // yield is a legal member name here. var e = start; while (e <= end) yield e++; } } get sync sync* { // sync is a legal identifier. yield "sync"; } einsZwei() sync* { yield 1; yield* [2, 3]; yield* []; yield 5; yield [6]; } dreiVier() sync* { // Throws type error: yielded object is not an iterable. } main() { for (int i = 0; i < 10; i++) { var sums = sum10(); print(sums); Expect.isTrue(sums is Iterable); Expect.equals(10, sums.length); Expect.equals(1, sums.first); Expect.equals(55, sums.last); var q = ""; for (var n in sums.take(3)) { q += "\$n "; } Expect.equals("1 3 6 ", q); var r = new Range(10, 12); var elems1 = r.elements(); print(elems1); var elems2 = r.yield; print(elems2); // Walk the elements of each iterable and compare them. var i = elems1.iterator; Expect.isTrue(i is Iterator); elems2.forEach((e) { Expect.isTrue(i.moveNext()); Expect.equals(e, i.current); }); print(sync); Expect.equals("sync", sync.single); print(einsZwei()); Expect.equals("(1, 2, 3, 5, [6])", einsZwei().toString()); } }