js/src/jit-test/tests/basic/expression-autopsy.js@6474c204b198
js/src/jit-test/tests/basic/expression-autopsy.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 load(libdir + "asserts.js");
3 function check_one(expected, f, err) {
4 var failed = true;
5 try {
6 f();
7 failed = false;
8 } catch (ex) {
9 var s = ex.toString();
10 assertEq(s.slice(0, 11), "TypeError: ");
11 assertEq(s.slice(-err.length), err, "" + f);
12 assertEq(s.slice(11, -err.length), expected);
13 }
14 if (!failed)
15 throw new Error("didn't fail");
16 }
17 ieval = eval;
18 function check(expr, expected=expr) {
19 var end, err;
20 for ([end, err] of [[".random_prop", " is undefined"], ["()", " is not a function"]]) {
21 var statement = "o = {};" + expr + end, f;
22 var cases = [
23 // Global scope
24 function () {
25 ieval("var o, undef;\n" + statement);
26 },
27 // Function scope
28 Function("o", "undef", statement),
29 // Function scope with variables
30 Function("var o, undef;\n" + statement),
31 // Function scope with some different arugments
32 Function("arg1", "arg2", "var o, undef;\n" + statement),
33 // Deoptimized function scope
34 Function("o", "undef", "with (Object) {}\n" + statement),
35 // Inside with
36 Function("with (Object) { " + statement + " }"),
37 // Closure
38 Function("o", "undef", "function myfunc() { return o + undef; }\n" + statement),
39 // Let definitions in a block
40 Function("{ let o, undef;\n" + statement + "}"),
41 // Let block
42 Function("let (o, undef) { " + statement + " }"),
43 // Let block with some other variables
44 Function("var v1, v2; let (o, undef) { " + statement + " }"),
45 // Shadowed let block
46 Function("o", "undef", "let (o, undef) { " + statement + " }"),
47 // Let in a switch
48 Function("var x = 4; switch (x) { case 4: let o, undef;" + statement + "\ncase 6: break;}"),
49 // The more lets the merrier
50 Function("let (x=4, y=5) { x + y; }\nlet (a, b, c) { a + b - c; }\nlet (o, undef) {" + statement + " }"),
51 // Let destructuring
52 Function("o", "undef", "let ([] = 4) {} let (o, undef) { " + statement + " }"),
53 // Try-catch blocks
54 Function("o", "undef", "try { let q = 4; try { let p = 4; } catch (e) {} } catch (e) {} let (o, undef) { " + statement + " }")
55 ];
57 try {
58 // Let in for-in
59 check_one(expected,
60 Function("var undef, o; for (let z in [1, 2]) { " + statement + " }"),
61 err);
62 } catch (ex) {
63 // Bug 831120. See bug 942804 comment 5.
64 if (expected == 'undef' && err == ' is undefined')
65 check_one(expected + end,
66 Function("var undef, o; for (let z in [1, 2]) { " + statement + " }"),
67 err);
68 else
69 throw ex;
70 }
72 for (var f of cases) {
73 check_one(expected, f, err);
74 }
75 }
76 }
78 check("undef");
79 check("o.b");
80 check("o.length");
81 check("o[true]");
82 check("o[false]");
83 check("o[null]");
84 check("o[0]");
85 check("o[1]");
86 check("o[3]");
87 check("o[256]");
88 check("o[65536]");
89 check("o[268435455]");
90 check("o['1.1']");
91 check("o[4 + 'h']", "o['4h']");
92 check("this.x");
93 check("ieval(undef)", "ieval(...)");
94 check("ieval.call()", "ieval.call(...)");
95 check("ieval(...[])", "ieval(...)");
96 check("ieval(...[undef])", "ieval(...)");
97 check("ieval(...[undef, undef])", "ieval(...)");
99 for (let tok of ["|", "^", "&", "==", "!==", "===", "!==", "<", "<=", ">", ">=",
100 ">>", "<<", ">>>", "+", "-", "*", "/", "%"]) {
101 check("o[(undef " + tok + " 4)]");
102 }
104 check("o[!(o)]");
105 check("o[~(o)]");
106 check("o[+ (o)]");
107 check("o[- (o)]");
109 // A few one off tests
110 check_one("6", (function () { 6() }), " is not a function");
111 check_one("Array.prototype.reverse.call(...)", (function () { Array.prototype.reverse.call('123'); }), " is read-only");
112 check_one("null", function () { var [{ x }] = [null, {}]; }, " has no properties");
113 check_one("x", function () { ieval("let (x) { var [a, b, [c0, c1]] = [x, x, x]; }") }, " is undefined");
115 // Check fallback behavior
116 assertThrowsInstanceOf(function () { for (let x of undefined) {} }, TypeError);
