1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Flags: --expose-debug-as debug
6 // Test the mirror object for collection iterators.
8 function testIteratorMirror(iter, offset, expected) {
9 while (offset-- > 0) iter.next();
11 var mirror = debug.MakeMirror(iter);
12 assertTrue(mirror.isIterator());
14 var preview = mirror.preview();
15 assertArrayEquals(expected, preview);
17 // Check that iterator has not changed after taking preview.
19 for (var i of iter) values.push(i);
20 assertArrayEquals(expected, values);
30 testIteratorMirror(map.keys(), 0, [41, o1]);
31 testIteratorMirror(map.values(), 0, [42, o2]);
32 testIteratorMirror(map.entries(), 0, [[41, 42], [o1, o2]]);
34 testIteratorMirror(map.keys(), 1, [o1]);
35 testIteratorMirror(map.values(), 1, [o2]);
36 testIteratorMirror(map.entries(), 1, [[o1, o2]]);
38 testIteratorMirror(map.keys(), 2, []);
39 testIteratorMirror(map.values(), 2, []);
40 testIteratorMirror(map.entries(), 2, []);
48 testIteratorMirror(set.keys(), 0, [41, 42, o1, o2]);
49 testIteratorMirror(set.values(), 0, [41, 42, o1, o2]);
50 testIteratorMirror(set.entries(), 0, [[41, 41], [42, 42], [o1, o1], [o2, o2]]);
52 testIteratorMirror(set.keys(), 1, [42, o1, o2]);
53 testIteratorMirror(set.values(), 1, [42, o1, o2]);
54 testIteratorMirror(set.entries(), 1, [[42, 42], [o1, o1], [o2, o2]]);
56 testIteratorMirror(set.keys(), 3, [o2]);
57 testIteratorMirror(set.values(), 3, [o2]);
58 testIteratorMirror(set.entries(), 3, [[o2, o2]]);
60 testIteratorMirror(set.keys(), 5, []);
61 testIteratorMirror(set.values(), 5, []);
62 testIteratorMirror(set.entries(), 5, []);