michael@0: // Test adding hooks during dispatch. The behavior is deterministic and "nice",
michael@0: // but mainly what we are checking here is that we do not crash due to
michael@0: // modifying a data structure while we're iterating over it.
michael@0: 
michael@0: var g = newGlobal();
michael@0: var n = 0;
michael@0: var hits;
michael@0: 
michael@0: function addDebugger() {
michael@0:     var dbg = new Debugger(g);
michael@0:     dbg.onDebuggerStatement = function (stack) {
michael@0:         hits++;
michael@0:         addDebugger();
michael@0:     };
michael@0: }
michael@0: 
michael@0: addDebugger();  // now there is one enabled Debugger
michael@0: hits = 0;
michael@0: g.eval("debugger;");  // after this there are two
michael@0: assertEq(hits, 1);
michael@0: 
michael@0: hits = 0;
michael@0: g.eval("debugger;");  // after this there are four
michael@0: assertEq(hits, 2);
michael@0: 
michael@0: hits = 0;
michael@0: g.eval("debugger;");  // after this there are eight
michael@0: assertEq(hits, 4);
michael@0: 
michael@0: hits = 0;
michael@0: g.eval("debugger;");
michael@0: assertEq(hits, 8);