michael@0: // tests calling native functions via Debugger.Object.prototype.apply/call
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: 
michael@0: var g = newGlobal();
michael@0: g.eval("function f() { debugger; }");
michael@0: var dbg = new Debugger(g);
michael@0: 
michael@0: function test(usingApply) {
michael@0:     dbg.onDebuggerStatement = function (frame) {
michael@0:         var max = frame.arguments[0];
michael@0:         var cv = usingApply ? max.apply(null, [9, 16]) : max.call(null, 9, 16);
michael@0:         assertEq(cv.return, 16);
michael@0: 
michael@0:         cv = usingApply ? max.apply() : max.call();
michael@0:         assertEq(cv.return, -1/0);
michael@0: 
michael@0:         cv = usingApply ? max.apply(null, [2, 5, 3, 8, 1, 9, 4, 6, 7])
michael@0:                         : max.call(null, 2, 5, 3, 8, 1, 9, 4, 6, 7);
michael@0:         assertEq(cv.return, 9);
michael@0: 
michael@0:         // second argument to apply must be an array
michael@0:         assertThrowsInstanceOf(function () { max.apply(null, 12); }, TypeError);
michael@0:     };
michael@0:     g.eval("f(Math.max);");
michael@0: 
michael@0:     dbg.onDebuggerStatement = function (frame) {
michael@0:         var push = frame.arguments[0];
michael@0:         var arr = frame.arguments[1];
michael@0:         var cv;
michael@0: 
michael@0:         cv = usingApply ? push.apply(arr, [0, 1, 2]) : push.call(arr, 0, 1, 2);
michael@0:         assertEq(cv.return, 3);
michael@0: 
michael@0:         cv = usingApply ? push.apply(arr, [arr]) : push.call(arr, arr);
michael@0:         assertEq(cv.return, 4);
michael@0: 
michael@0:         cv = usingApply ? push.apply(arr) : push.call(arr);
michael@0:         assertEq(cv.return, 4);
michael@0: 
michael@0:         // You can apply Array.prototype.push to a string; it does ToObject on
michael@0:         // it.  But as the length property on String objects is non-writable,
michael@0:         // attempting to increase the length will throw a TypeError.
michael@0:         cv = usingApply
michael@0:              ? push.apply("hello", ["world"])
michael@0:              : push.call("hello", "world");
michael@0:         assertEq("throw" in cv, true);
michael@0:         var ex = cv.throw;
michael@0:         assertEq(frame.evalWithBindings("ex instanceof TypeError", { ex: ex }).return, true);
michael@0:     };
michael@0:     g.eval("var a = []; f(Array.prototype.push, a);");
michael@0:     assertEq(g.a.length, 4);
michael@0:     assertEq(g.a.slice(0, 3).join(","), "0,1,2");
michael@0:     assertEq(g.a[3], g.a);
michael@0: }
michael@0: 
michael@0: test(true);
michael@0: test(false);