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27
28/**
29 * @fileoverview Check that flattening deep trees of cons strings does not
30 * cause stack overflows.
31 */
32
33function newdeep(start, depth) {
34  var d = start;
35  for (var i = 0; i < depth; i++) {
36    d = d + "f";
37  }
38  return d;
39}
40
41var default_depth = 110000;
42
43var deep = newdeep("foo", default_depth);
44assertEquals('f', deep[0]);
45
46var cmp1 = newdeep("a", default_depth);
47var cmp2 = newdeep("b", default_depth);
48
49assertEquals(-1, cmp1.localeCompare(cmp2), "ab");
50
51var cmp2empty = newdeep("c", default_depth);
52assertTrue(cmp2empty.localeCompare("") > 0, "c");
53
54var cmp3empty = newdeep("d", default_depth);
55assertTrue("".localeCompare(cmp3empty) < 0), "d";
56
57var slicer_depth = 1100;
58
59var slicer = newdeep("slice", slicer_depth);
60
61for (i = 0; i < slicer_depth + 4; i += 2) {
62  slicer =  slicer.slice(1, -1);
63}
64
65assertEquals("f", slicer[0]);
66assertEquals(1, slicer.length);
67