regress-70066.js revision 1e0659c275bb392c045087af4f6b0d7565cb3d77 
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27
28// Regression test for Chromium issue 70066.  Delete should work properly
29// from inside 'with' scopes.
30// http://code.google.com/p/chromium/issues/detail?id=70066
31
32x = 0;
33
34// Delete on a slot from a function's own context.
35function test1() {
36  var value = 1;
37  var status;
38  with ({}) { status = delete value; }
39  return value + ":" + status;
40}
41
42assertEquals("1:false", test1(), "test1");
43assertEquals(0, x, "test1");  // Global x is undisturbed.
44
45
46// Delete on a slot from an outer context.
47function test2() {
48  function f() {
49    with ({}) { return delete value; }
50  }
51  var value = 2;
52  var status = f();
53  return value + ":" + status;
54}
55
56assertEquals("2:false", test2(), "test2");
57assertEquals(0, x, "test2");  // Global x is undisturbed.
58
59
60// Delete on an argument.  This hits the same code paths as test5 because
61// 'with' forces all parameters to be indirected through the arguments
62// object.
63function test3(value) {
64  var status;
65  with ({}) { status = delete value; }
66  return value + ":" + status;
67}
68
69assertEquals("undefined:true", test3(3), "test3");
70assertEquals(0, x, "test3");  // Global x is undisturbed.
71
72
73// Delete on an argument from an outer context.  This hits the same code
74// path as test2.
75function test4(value) {
76  function f() {
77    with ({}) { return delete value; }
78  }
79  var status = f();
80  return value + ":" + status;
81}
82
83assertEquals("4:false", test4(4), "test4");
84assertEquals(0, x, "test4");  // Global x is undisturbed.
85
86
87// Delete on an argument found in the arguments object.  Such properties are
88// normally DONT_DELETE in JavaScript but deletion is allowed by V8.
89function test5(value) {
90  var status;
91  with ({}) { status = delete value; }
92  return arguments[0] + ":" + status;
93}
94
95assertEquals("undefined:true", test5(5), "test5");
96assertEquals(0, x, "test5");  // Global x is undisturbed.
97
98function test6(value) {
99  function f() {
100    with ({}) { return delete value; }
101  }
102  var status = f();
103  return arguments[0] + ":" + status;
104}
105
106assertEquals("undefined:true", test6(6), "test6");
107assertEquals(0, x, "test6");  // Global x is undisturbed.
108
109
110// Delete on a property found on 'with' object.
111function test7(object) {
112  with (object) { return delete value; }
113}
114
115var o = {value: 7};
116assertEquals(true, test7(o), "test7");
117assertEquals(void 0, o.value, "test7");
118assertEquals(0, x, "test7");  // Global x is undisturbed.
119
120
121// Delete on a global property.
122function test8() {
123  with ({}) { return delete x; }
124}
125
126assertEquals(true, test8(), "test8");
127assertThrows("x", "test8");  // Global x should be deleted.
128
129
130// Delete on a property that is not found anywhere.
131function test9() {
132  with ({}) { return delete x; }
133}
134
135assertThrows("x", "test9");  // Make sure it's not there.
136assertEquals(true, test9(), "test9");
137
138
139// Delete on a DONT_DELETE property of the global object.
140var y = 10;
141function test10() {
142  with ({}) { return delete y; }
143}
144
145assertEquals(false, test10(), "test10");
146assertEquals(10, y, "test10");
147