1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/debug/Environment-variables.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +// Comprehensive test of get/setVariable on many kinds of environments and
1.5 +// bindings.
1.6 +
1.7 +load(libdir + "asserts.js");
1.8 +
1.9 +var cases = [
1.10 + // global bindings and bindings on the global prototype chain
1.11 + "x = VAL; @@",
1.12 + "var x = VAL; @@",
1.13 + "Object.prototype.x = VAL; @@",
1.14 +
1.15 + // let, catch, and comprehension bindings
1.16 + "let x = VAL; @@",
1.17 + "{ let x = VAL; @@ }",
1.18 + "let (x = VAL) { @@ }",
1.19 + "try { throw VAL; } catch (x) { @@ }",
1.20 + "try { throw VAL; } catch (x) { @@ }",
1.21 + "for (let x of [VAL]) { @@ }",
1.22 + "for each (let x in [VAL]) { @@ }",
1.23 + "switch (0) { default: let x = VAL; @@ }",
1.24 + "[function () { @@ }() for (x of [VAL])];",
1.25 + // "((function () { @@ })() for (x of [VAL])).next();", // bug 709367
1.26 +
1.27 + // arguments
1.28 + "function f(x) { @@ } f(VAL);",
1.29 + "function f([w, x]) { @@ } f([0, VAL]);",
1.30 + "function f({v: x}) { @@ } f({v: VAL});",
1.31 + "function f([w, {v: x}]) { @@ } f([0, {v: VAL}]);",
1.32 +
1.33 + // bindings in functions
1.34 + "function f() { var x = VAL; @@ } f();",
1.35 + "function f() { let x = VAL; @@ } f();",
1.36 + "function f([x]) { let x = VAL; @@ } f(['fail']);",
1.37 + "function f(x) { { let x = VAL; @@ } } f('fail');",
1.38 + "function f() { function x() {} x = VAL; @@ } f();",
1.39 +
1.40 + // dynamic bindings
1.41 + "function f(s) { eval(s); @@ } f('var x = VAL');",
1.42 + "function f(s) { let (x = 'fail') { eval(s); } x = VAL; @@ } f('var x;');",
1.43 + "var x = VAL; function f(s) { eval('var x = 0;'); eval(s); @@ } f('delete x;');",
1.44 + "function f(obj) { with (obj) { @@ } } f({x: VAL});",
1.45 + "function f(obj) { with (obj) { @@ } } f(Object.create({x: VAL}));",
1.46 + "function f(b) { if (b) { function x(){} } x = VAL; @@ } f(1);",
1.47 +];
1.48 +
1.49 +var nextval = 1000;
1.50 +
1.51 +function test(code, debugStmts, followupStmts) {
1.52 + var val = nextval++;
1.53 + var hits = 0;
1.54 +
1.55 + var g = newGlobal();
1.56 + g.eval("function debugMe() { var x = 'wrong-x'; debugger; }");
1.57 + g.capture = null;
1.58 +
1.59 + var dbg = Debugger(g);
1.60 + dbg.onDebuggerStatement = function (frame) {
1.61 + if (frame.callee !== null && frame.callee.name == 'debugMe')
1.62 + frame = frame.older;
1.63 + var env = frame.environment.find("x");
1.64 + assertEq(env.getVariable("x"), val)
1.65 + assertEq(env.setVariable("x", 'ok'), undefined);
1.66 + assertEq(env.getVariable("x"), 'ok');
1.67 +
1.68 + // setVariable cannot create new variables.
1.69 + assertThrowsInstanceOf(function () { env.setVariable("newVar", 0); }, TypeError);
1.70 + hits++;
1.71 + };
1.72 +
1.73 + code = code.replace("@@", debugStmts);
1.74 + if (followupStmts !== undefined)
1.75 + code += " " + followupStmts;
1.76 + code = code.replace(/VAL/g, uneval(val));
1.77 + g.eval(code);
1.78 + assertEq(hits, 1);
1.79 +}
1.80 +
1.81 +for (var s of cases) {
1.82 + // Test triggering the debugger right in the scope in which x is bound.
1.83 + test(s, "debugger; assertEq(x, 'ok');");
1.84 +
1.85 + // Test calling a function that triggers the debugger.
1.86 + test(s, "debugMe(); assertEq(x, 'ok');");
1.87 +
1.88 + // Test triggering the debugger from a scope nested in x's scope.
1.89 + test(s, "let (y = 'irrelevant') { (function (z) { let (zz = y) { debugger; }})(); } assertEq(x, 'ok');"),
1.90 +
1.91 + // Test closing over the variable and triggering the debugger later, after
1.92 + // leaving the variable's scope.
1.93 + test(s, "capture = {dbg: function () { debugger; }, get x() { return x; }};",
1.94 + "assertEq(capture.x, VAL); capture.dbg(); assertEq(capture.x, 'ok');");
1.95 +}
