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 // Simple Debugger.Frame.prototype.onStep test.

 // Test that onStep fires often enough to see all four values of a.

 var g = newGlobal();

 g.a = 0;

 g.eval("function f() {\n" +

        "    a += 2;\n" +

        "    a += 2;\n" +

        "    a += 2;\n" +

        "    return a;\n" +

        "}\n");

 var dbg = Debugger(g);

 var seen = [0, 0, 0, 0, 0, 0, 0];

 dbg.onEnterFrame = function (frame) {

     frame.onStep = function () {

         assertEq(arguments.length, 0);

         assertEq(this, frame);

         seen[g.a] = 1;

     };

 }

 g.f();

 assertEq(seen.join(""), "1010101");