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comparison: js/src/jit-test/tests/debug/Object-apply-02.js
js/src/jit-test/tests/debug/Object-apply-02.js
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- 6474c204b198
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| -1:000000000000 | 0:b13f3acd6ff4 |
|---|---|
| 1 // tests calling native functions via Debugger.Object.prototype.apply/call | |
| 2 | |
| 3 load(libdir + "asserts.js"); | |
| 4 | |
| 5 var g = newGlobal(); | |
| 6 g.eval("function f() { debugger; }"); | |
| 7 var dbg = new Debugger(g); | |
| 8 | |
| 9 function test(usingApply) { | |
| 10 dbg.onDebuggerStatement = function (frame) { | |
| 11 var max = frame.arguments[0]; | |
| 12 var cv = usingApply ? max.apply(null, [9, 16]) : max.call(null, 9, 16); | |
| 13 assertEq(cv.return, 16); | |
| 14 | |
| 15 cv = usingApply ? max.apply() : max.call(); | |
| 16 assertEq(cv.return, -1/0); | |
| 17 | |
| 18 cv = usingApply ? max.apply(null, [2, 5, 3, 8, 1, 9, 4, 6, 7]) | |
| 19 : max.call(null, 2, 5, 3, 8, 1, 9, 4, 6, 7); | |
| 20 assertEq(cv.return, 9); | |
| 21 | |
| 22 // second argument to apply must be an array | |
| 23 assertThrowsInstanceOf(function () { max.apply(null, 12); }, TypeError); | |
| 24 }; | |
| 25 g.eval("f(Math.max);"); | |
| 26 | |
| 27 dbg.onDebuggerStatement = function (frame) { | |
| 28 var push = frame.arguments[0]; | |
| 29 var arr = frame.arguments[1]; | |
| 30 var cv; | |
| 31 | |
| 32 cv = usingApply ? push.apply(arr, [0, 1, 2]) : push.call(arr, 0, 1, 2); | |
| 33 assertEq(cv.return, 3); | |
| 34 | |
| 35 cv = usingApply ? push.apply(arr, [arr]) : push.call(arr, arr); | |
| 36 assertEq(cv.return, 4); | |
| 37 | |
| 38 cv = usingApply ? push.apply(arr) : push.call(arr); | |
| 39 assertEq(cv.return, 4); | |
| 40 | |
| 41 // You can apply Array.prototype.push to a string; it does ToObject on | |
| 42 // it. But as the length property on String objects is non-writable, | |
| 43 // attempting to increase the length will throw a TypeError. | |
| 44 cv = usingApply | |
| 45 ? push.apply("hello", ["world"]) | |
| 46 : push.call("hello", "world"); | |
| 47 assertEq("throw" in cv, true); | |
| 48 var ex = cv.throw; | |
| 49 assertEq(frame.evalWithBindings("ex instanceof TypeError", { ex: ex }).return, true); | |
| 50 }; | |
| 51 g.eval("var a = []; f(Array.prototype.push, a);"); | |
| 52 assertEq(g.a.length, 4); | |
| 53 assertEq(g.a.slice(0, 3).join(","), "0,1,2"); | |
| 54 assertEq(g.a[3], g.a); | |
| 55 } | |
| 56 | |
| 57 test(true); | |
| 58 test(false); |
