michael@0: // Setting onStep does not affect later calls to the same function.
michael@0: // (onStep is per-frame, not per-function.)
michael@0: 
michael@0: var g = newGlobal();
michael@0: g.a = 1;
michael@0: g.eval("function f(a) {\n" +
michael@0:        "    var x = 2 * a;\n" +
michael@0:        "    return x * x;\n" +
michael@0:        "}\n");
michael@0: 
michael@0: var dbg = Debugger(g);
michael@0: var log = '';
michael@0: dbg.onEnterFrame = function (frame) {
michael@0:     log += '+';
michael@0:     frame.onStep = function () {
michael@0:         if (log.charAt(log.length - 1) != 's')
michael@0:             log += 's';
michael@0:     };
michael@0: };
michael@0: 
michael@0: g.f(1);
michael@0: log += '|';
michael@0: g.f(2);
michael@0: log += '|';
michael@0: dbg.onEnterFrame = undefined;
michael@0: g.f(3);
michael@0: 
michael@0: assertEq(log, '+s|+s|');