michael@0: var g = newGlobal();
michael@0: var dbg = new Debugger;
michael@0: var gw = dbg.addDebuggee(g);
michael@0: 
michael@0: var hits = 0;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     hits++;
michael@0:     assertEq(frame.environment.parent.getVariable('y'), true);
michael@0: };
michael@0: 
michael@0: g.eval("var g;" +
michael@0:        "function f(x) {" +
michael@0:        "  let (y = x) {" +
michael@0:        "    if (x)" +
michael@0:        "      g = function() { eval('debugger') };" +
michael@0:        "    else" +
michael@0:        "      g();" +
michael@0:        "  }" +
michael@0:        "}" +
michael@0:        "f(true);" +
michael@0:        "f(false);");
michael@0: assertEq(hits, 1);
michael@0: 
michael@0: var hits = 0;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     hits++;
michael@0:     assertEq(frame.environment.parent.getVariable('y'), 1);
michael@0:     assertEq(frame.environment.parent.names().indexOf('z'), -1);
michael@0: };
michael@0: 
michael@0: g.eval("var g;" +
michael@0:        "let (y = 1) {" +
michael@0:        "  g = function () { debugger; };" +
michael@0:        "  let (z = 2) {" +
michael@0:        "    g();" +
michael@0:        "  }"+
michael@0:        "}");
michael@0: assertEq(hits, 1);
michael@0: 
michael@0: var hits = 0;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     hits++;
michael@0:     var e = frame.older.environment.parent;
michael@0:     assertEq(e.getVariable('z'), true);
michael@0:     e = e.parent;
michael@0:     assertEq(e.getVariable('y'), true);
michael@0: };
michael@0: 
michael@0: g.eval("var g;" +
michael@0:        "function h() { debugger };" +
michael@0:        "for (var x of [true, false]) {" +
michael@0:        "  let (y = x) {" +
michael@0:        "    let (z = x) {" +
michael@0:        "      if (x)" +
michael@0:        "        g = function () { print(z); h() };" +
michael@0:        "      else" +
michael@0:        "        g();" +
michael@0:        "    }" +
michael@0:        "  }" +
michael@0:        "}");
michael@0: assertEq(hits, 1);