src/third_party/mozjs-45/js/src/jit-test/tests/debug/cross-context-3.js

var g = newGlobal();
g.eval('function f() { debugger; evaluate("debugger;", {newContext: true}); }');

var dbg = new Debugger(g);
var hits = 0;
dbg.onDebuggerStatement = function (frame1) {
    dbg.onDebuggerStatement = function (frame2) {
        assertEq(frame1.eval("throw 'ponies'").throw, 'ponies');
        hits++;
    };
};

g.f();
assertEq(hits, 1);