v8/test/mjsunit/debug-stepout-scope-part5.js

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// Flags: --expose-debug-as debug --expose-natives-as=builtins

// Check that the ScopeIterator can properly recreate the scope at
// every point when stepping through functions.

var Debug = debug.Debug;

function listener(event, exec_state, event_data, data) {
  if (event == Debug.DebugEvent.Break) {
    // Access scope details.
    var scope_count = exec_state.frame().scopeCount();
    for (var i = 0; i < scope_count; i++) {
      var scope = exec_state.frame().scope(i);
      // assertTrue(scope.isScope());
      scope.scopeType();
      scope.scopeObject();
    }

    // Do steps until we reach the global scope again.
    if (true) {
      exec_state.prepareStep(Debug.StepAction.StepInMin, 1);
    }
  }
}

Debug.setListener(listener);

var q = 42;
var prefixes = [ "debugger; ",
                 "if (false) { try { throw 0; } catch(x) { this.x = x; } }; debugger; " ];
var with_bodies = [ "with ({}) {}",
                    "with ({x:1}) x",
                    "with ({x:1}) x = 1",
                    "with ({x:1}) x ",
                    "with ({x:1}) x = 1 ",
                    "with ({x:1}) x;",
                    "with ({x:1}) x = 1;",
                    "with ({x:1}) x; ",
                    "with ({x:1}) x = 1; " ];


// Test global eval and function constructor.
for (var i = 0; i < prefixes.length; ++i) {
  var pre = prefixes[i];
  for (var j = 0; j < with_bodies.length; ++j) {
    var body = with_bodies[j];
    eval(pre + body);
    Function(pre + body)();
  }
}