js/src/jit-test/tests/debug/Environment-variables.js@6474c204b198
js/src/jit-test/tests/debug/Environment-variables.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 // Comprehensive test of get/setVariable on many kinds of environments and
2 // bindings.
4 load(libdir + "asserts.js");
6 var cases = [
7 // global bindings and bindings on the global prototype chain
8 "x = VAL; @@",
9 "var x = VAL; @@",
10 "Object.prototype.x = VAL; @@",
12 // let, catch, and comprehension bindings
13 "let x = VAL; @@",
14 "{ let x = VAL; @@ }",
15 "let (x = VAL) { @@ }",
16 "try { throw VAL; } catch (x) { @@ }",
17 "try { throw VAL; } catch (x) { @@ }",
18 "for (let x of [VAL]) { @@ }",
19 "for each (let x in [VAL]) { @@ }",
20 "switch (0) { default: let x = VAL; @@ }",
21 "[function () { @@ }() for (x of [VAL])];",
22 // "((function () { @@ })() for (x of [VAL])).next();", // bug 709367
24 // arguments
25 "function f(x) { @@ } f(VAL);",
26 "function f([w, x]) { @@ } f([0, VAL]);",
27 "function f({v: x}) { @@ } f({v: VAL});",
28 "function f([w, {v: x}]) { @@ } f([0, {v: VAL}]);",
30 // bindings in functions
31 "function f() { var x = VAL; @@ } f();",
32 "function f() { let x = VAL; @@ } f();",
33 "function f([x]) { let x = VAL; @@ } f(['fail']);",
34 "function f(x) { { let x = VAL; @@ } } f('fail');",
35 "function f() { function x() {} x = VAL; @@ } f();",
37 // dynamic bindings
38 "function f(s) { eval(s); @@ } f('var x = VAL');",
39 "function f(s) { let (x = 'fail') { eval(s); } x = VAL; @@ } f('var x;');",
40 "var x = VAL; function f(s) { eval('var x = 0;'); eval(s); @@ } f('delete x;');",
41 "function f(obj) { with (obj) { @@ } } f({x: VAL});",
42 "function f(obj) { with (obj) { @@ } } f(Object.create({x: VAL}));",
43 "function f(b) { if (b) { function x(){} } x = VAL; @@ } f(1);",
44 ];
46 var nextval = 1000;
48 function test(code, debugStmts, followupStmts) {
49 var val = nextval++;
50 var hits = 0;
52 var g = newGlobal();
53 g.eval("function debugMe() { var x = 'wrong-x'; debugger; }");
54 g.capture = null;
56 var dbg = Debugger(g);
57 dbg.onDebuggerStatement = function (frame) {
58 if (frame.callee !== null && frame.callee.name == 'debugMe')
59 frame = frame.older;
60 var env = frame.environment.find("x");
61 assertEq(env.getVariable("x"), val)
62 assertEq(env.setVariable("x", 'ok'), undefined);
63 assertEq(env.getVariable("x"), 'ok');
65 // setVariable cannot create new variables.
66 assertThrowsInstanceOf(function () { env.setVariable("newVar", 0); }, TypeError);
67 hits++;
68 };
70 code = code.replace("@@", debugStmts);
71 if (followupStmts !== undefined)
72 code += " " + followupStmts;
73 code = code.replace(/VAL/g, uneval(val));
74 g.eval(code);
75 assertEq(hits, 1);
76 }
78 for (var s of cases) {
79 // Test triggering the debugger right in the scope in which x is bound.
80 test(s, "debugger; assertEq(x, 'ok');");
82 // Test calling a function that triggers the debugger.
83 test(s, "debugMe(); assertEq(x, 'ok');");
85 // Test triggering the debugger from a scope nested in x's scope.
86 test(s, "let (y = 'irrelevant') { (function (z) { let (zz = y) { debugger; }})(); } assertEq(x, 'ok');"),
88 // Test closing over the variable and triggering the debugger later, after
89 // leaving the variable's scope.
90 test(s, "capture = {dbg: function () { debugger; }, get x() { return x; }};",
91 "assertEq(capture.x, VAL); capture.dbg(); assertEq(capture.x, 'ok');");
92 }
