2015-06-26 23:02:30 +00:00
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// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// TODO(jmesserly): this is a copy of the language test of the same name,
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// we can remove this copy when we're running against those tests.
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2015-07-28 23:52:23 +00:00
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import "package:expect/expect.dart";
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2015-06-26 23:02:30 +00:00
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Iterable<int> foo1() sync* {
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yield 1;
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}
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Iterable<int> foo2(p) sync* {
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bool t = false;
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yield null;
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while (true) {
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a: for (int i = 0; i < p; i++) {
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if (!t) {
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for (int j = 0; j < 3; j++) {
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yield -1;
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t = true;
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break a;
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}
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}
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yield i;
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}
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}
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}
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// p is copied to all Iterators from the Iterable returned by foo3.
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// Also each iterator will have its own i.
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Iterable<int> foo3(int p) sync* {
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int i = 0;
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i++;
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p++;
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yield p + i;
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}
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main() {
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Expect.listEquals([1], foo1().toList());
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Expect.listEquals([null, -1, 0, 1, 2, 3, 0, 1, 2, 3],
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foo2(4).take(10).toList());
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Iterable t = foo3(0);
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Iterator it1 = t.iterator;
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Iterator it2 = t.iterator; /// copyParameters: ok
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it1.moveNext();
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it2.moveNext(); /// copyParameters: continued
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Expect.equals(2, it1.current);
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// TODO(sigurdm): Check up on the spec here.
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Expect.equals(2, it2.current); /// copyParameters: continued
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Expect.isFalse(it1.moveNext());
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// Test that two `moveNext()` calls are fine.
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Expect.isFalse(it1.moveNext());
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Expect.isFalse(it2.moveNext()); /// copyParameters: continued
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Expect.isFalse(it2.moveNext()); /// copyParameters: continued
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}
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