michael@0: // setVariable throws if no binding exists.
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: 
michael@0: function test(code) {
michael@0:     var g = newGlobal();
michael@0:     var dbg = new Debugger(g);
michael@0:     var hits = 0;
michael@0:     dbg.onDebuggerStatement = function (frame) {
michael@0:         var env = frame.older.environment;
michael@0:         assertThrowsInstanceOf(function () { env.setVariable("y", 2); }, Error);
michael@0:         hits++;
michael@0:     };
michael@0:     g.eval("var y = 0; function d() { debugger; }");
michael@0: 
michael@0:     assertEq(g.eval(code), 0);
michael@0: 
michael@0:     assertEq(g.y, 0);
michael@0:     assertEq(hits, 1);
michael@0: }
michael@0: 
michael@0: // local scope of non-heavyweight function
michael@0: test("function f() { var x = 1; d(); return y; }  f();");
michael@0: 
michael@0: // block scope
michael@0: test("function h(x) { if (x) { let x = 1; d(); return y; } }  h(3);");
michael@0: 
michael@0: // strict eval scope
michael@0: test("'use strict'; eval('d(); y;');");