| // tests calling script functions via Debugger.Object.prototype.apply/call |
| |
| load(libdir + "asserts.js"); |
| |
| var g = newGlobal(); |
| g.eval("function f() { debugger; }"); |
| var dbg = new Debugger(g); |
| |
| var hits = 0; |
| function test(usingApply) { |
| dbg.onDebuggerStatement = function (frame) { |
| var fn = frame.arguments[0]; |
| var cv = usingApply ? fn.apply(null, [9, 16]) : fn.call(null, 9, 16); |
| assertEq(Object.keys(cv).join(","), "return"); |
| assertEq(Object.getPrototypeOf(cv), Object.prototype); |
| assertEq(cv.return, 25); |
| |
| cv = usingApply ? fn.apply(null, ["hello ", "world"]) : fn.call(null, "hello ", "world"); |
| assertEq(Object.keys(cv).join(","), "return"); |
| assertEq(cv.return, "hello world"); |
| |
| // Handle more or less arguments. |
| assertEq((usingApply ? fn.apply(null, [1, 5, 100]) : fn.call(null, 1, 5, 100)).return, 6); |
| assertEq((usingApply ? fn.apply(null, []) : fn.call(null)).return, NaN); |
| assertEq((usingApply ? fn.apply() : fn.call()).return, NaN); |
| |
| // Throw if a this-value or argument is an object but not a Debugger.Object. |
| assertThrowsInstanceOf(function () { usingApply ? fn.apply({}, []) : fn.call({}); }, |
| TypeError); |
| assertThrowsInstanceOf(function () { usingApply ? fn.apply(null, [{}]) : fn.call(null, {}); }, |
| TypeError); |
| hits++; |
| }; |
| g.eval("f(function (a, b) { return a + b; });"); |
| |
| // The callee receives the right arguments even if more arguments are provided |
| // than the callee's .length. |
| dbg.onDebuggerStatement = function (frame) { |
| assertEq((usingApply ? frame.arguments[0].apply(null, ['one', 'two']) |
| : frame.arguments[0].call(null, 'one', 'two')).return, |
| 2); |
| hits++; |
| }; |
| g.eval("f(function () { return arguments.length; });"); |
| |
| // Exceptions are reported as {throw:} completion values. |
| dbg.onDebuggerStatement = function (frame) { |
| var lose = frame.arguments[0]; |
| var cv = usingApply ? lose.apply(null, []) : lose.call(null); |
| assertEq(Object.keys(cv).join(","), "throw"); |
| assertEq(cv.throw, frame.callee); |
| hits++; |
| }; |
| g.eval("f(function lose() { throw f; });"); |
| } |
| |
| test(true); |
| test(false); |
| assertEq(hits, 6); |