1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1530413
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1530413</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
add_task(() => {
var Cu = SpecialPowers.Cu;
try {
// Test case 1
({} instanceof {});
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "({}) is not a function", "We should get a correct error message when calling instanceof");
}
// Test case 2
try {
({} instanceof document);
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "document is not a function", "We should get a correct error message when calling instanceof");
}
// Test case 3
try {
({} instanceof new Proxy(document, {}));
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "(new Proxy(...)) is not a function", "We should get a correct error message when calling instanceof");
}
// Test case 4 - Verify invoking instanceof on an object from a different compartment yields the same error
var sandbox = SpecialPowers.unwrap(Cu.Sandbox(this, { sameZoneAs: this, freshCompartment: true, wantXrays: false }));
sandbox.window = window;
sandbox.crossCompartmentObject = {}; // object created in the test compartment
try {
Cu.evalInSandbox("({} instanceof window);", sandbox);
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "window is not a function", "We should get a correct error message when calling instanceof");
}
// Test case 5 - Verify we get the same error when the LHS is an object created in a different compartment
try {
Cu.evalInSandbox("(crossCompartmentObject instanceof window);", sandbox);
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "window is not a function", "We should get a correct error message when calling instanceof");
}
// Test case 6 - Test that we are correctly wrapping the window into sandbox's compartment
window[Symbol.hasInstance] = function(instance) {
instance.window = this;
return true;
}
var x = Cu.evalInSandbox("(crossCompartmentObject instanceof window);", sandbox);
ok(x, "Symbol.hasInstance for window should return true");
is(sandbox.crossCompartmentObject.window, window, "We shouldn't leak the window");
delete window[Symbol.hasInstance];
Cu.nukeSandbox(sandbox);
// Test case 7 - Test instanceof with RHS being a same-origin Xray to a Window
sandbox = SpecialPowers.unwrap(Cu.Sandbox(this, { sameZoneAs: this, freshCompartment: true}));
sandbox.window = window;
sandbox.crossCompartmentObject = {};
window[Symbol.hasInstance] = function(instance) {
instance.window = this;
return true;
}
try {
Cu.evalInSandbox("(crossCompartmentObject instanceof window);", sandbox);
ok(false, "Should throw a type error");
} catch (e) {
is(e.message, "window is not a function",
"We should get a correct error thrown when the RHS of instanceof is an Xray to a Window.");
}
delete window[Symbol.hasInstance];
Cu.nukeSandbox(sandbox);
// Test case 8 - Test instanceof with RHS being a same-origin Xray waiver
sandbox = SpecialPowers.unwrap(Cu.Sandbox(this, { sameZoneAs: this, freshCompartment: true}));
sandbox.window = window;
sandbox.crossCompartmentObject = {};
sandbox.waiveXrays = SpecialPowers.wrapFor(Cu.waiveXrays, sandbox);
window[Symbol.hasInstance] = function(instance) {
instance.window = this;
return true;
}
Cu.evalInSandbox("(crossCompartmentObject instanceof waiveXrays(window));", sandbox);
ok(x, "Symbol.hasInstance for window should return true");
is(sandbox.crossCompartmentObject.window, window,
"The window pointed to by the crossCompartmentObject should be the same as the window in our compartment");
delete window[Symbol.hasInstance];
Cu.nukeSandbox(sandbox);
});
</script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1530413">Mozilla Bug 1530413</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>
|
