Script-clearBreakpoint-02.js

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// A breakpoint cleared during dispatch does not fire.

// (Breakpoint dispatch is well-behaved even when breakpoint handlers clear other breakpoints.)

var g = newGlobal({newCompartment: true});

var dbg = Debugger(g);

var log = '';

dbg.onDebuggerStatement = function (frame) {

    var s = frame.script;

    function handler(i) {

        if (i === 1)

            return function () { log += i; s.clearBreakpoint(h[1]); s.clearBreakpoint(h[2]); };

        return function () { log += i; };

    var offs = s.getLineOffsets(g.line0 + 2);

    var h = [];

    for (var i = 0; i < 4; i++) {

        h[i] = {hit: handler(i)};

        for (var j = 0; j < offs.length; j++)

            s.setBreakpoint(offs[j], h[i]);

};

g.eval("var line0 = Error().lineNumber;\n" +

       "debugger;\n" +          // line0 + 1

       "result = 'ok';\n");     // line0 + 2

assertEq(log, '013');