node/deps/v8/test/debugger/debug/es6/debug-stepnext-for.js

// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --harmony

Debug = debug.Debug;
var break_count = 0
var exception = null;
var log = []

var s = 0;
var a = [1, 2, 3];
var b = [1, 2, 3, 4];
var null_value = null;
var i = 0;

function f() {
  "use strict";
  debugger;                      // Break a
  var j;                         // Break b

  for (var i in null_value) {    // Break c
    s += a[i];
  }

  for (j in null_value) {        // Break d
    s += a[j];
  }

  for (var i in a) {             // Break e
    s += a[i];                   // Break E
  }

  for (j in a) {                 // Break f
    s += a[j];                   // Break F
  }

  for (let i in a) {             // Break g
    s += a[i];                   // Break G
  }

  for (var i of a) {             // Break h
    s += i;                      // Break H
  }

  for (j of a) {                 // Break i
    s += j;                      // Break I
  }

  for (let i  of  a) {           // Break j
    s += i;                      // Break J
  }

  for (var i = 0; i < 3; i++) {  // Break k
    s += a[i];                   // Break K
  }

  for (j = 0; j < 3; j++) {      // Break l
    s += a[j];                   // Break L
  }

  for (let i = 0; i < 3; i++) {  // Break m
    s += a[i];                   // Break M
  }

  for (let i of a) {}            // Break n

  [1, ...a]                      // Break o

}                                // Break y

function listener(event, exec_state, event_data, data) {
  if (event != Debug.DebugEvent.Break) return;
  try {
    var line = exec_state.frame(0).sourceLineText();
    var col = exec_state.frame(0).sourceColumn();
    print(line);
    var match = line.match(/\/\/ Break (\w)$/);
    assertEquals(2, match.length);
    log.push(match[1] + col);
    exec_state.prepareStep(Debug.StepAction.StepOver);
    break_count++;
  } catch (e) {
    exception = e;
  }
}

Debug.setListener(listener);
f();
Debug.setListener(null);         // Break z

print("log:\n"+ JSON.stringify(log));
// The let declaration differs from var in that the loop variable
// is declared in every iteration.
// TODO(verwaest): For-of has hacky position numbers for Symbol.iterator and
// .next. Restore to proper positions once the CallPrinter can disambiguate
// based on other values.
var expected = [
  // Entry
  'a2',
  // Empty for-in-var: get enumerable
  'c16',
  // Empty for-in: get enumerable
  'd12',
  // For-in-var: get enumerable, assign, body, assign, body, ...
  'e16',
  'e11',
  'E4',
  'e11',
  'E4',
  'e11',
  'E4',
  'e11',
  // For-in: get enumerable, assign, body, assign, body, ...
  'f12',
  'f7',
  'F4',
  'f7',
  'F4',
  'f7',
  'F4',
  'f7',
  // For-in-let: get enumerable, next, body, next,  ...
  'g16',
  'g11',
  'G4',
  'g11',
  'G4',
  'g11',
  'G4',
  'g11',
  // For-of-var: [Symbol.iterator](), next(), body, next(), body, ...
  'h16',
  'h11',
  'H4',
  'h11',
  'H4',
  'h11',
  'H4',
  'h11',
  // For-of: [Symbol.iterator](), next(), body, next(), body, ...
  'i12',
  'i7',
  'I4',
  'i7',
  'I4',
  'i7',
  'I4',
  'i7',
  // For-of-let: [Symbol.iterator](), next(), body, next(), ...
  'j18',
  'j11',
  'J4',
  'j11',
  'J4',
  'j11',
  'J4',
  'j11',
  // For-var: init, condition, body, next, condition, body, ...
  'k15',
  'k20',
  'K4',
  'k26',
  'k20',
  'K4',
  'k26',
  'k20',
  'K4',
  'k26',
  'k20',
  // For: init, condition, body, next, condition, body, ...
  'l7',
  'l16',
  'L4',
  'l22',
  'l16',
  'L4',
  'l22',
  'l16',
  'L4',
  'l22',
  'l16',
  // For-let: init, condition, body, next, condition, body, ...
  'm15',
  'm20',
  'M4',
  'm26',
  'm20',
  'M4',
  'm26',
  'm20',
  'M4',
  'm26',
  'm20',
  // For-of, empty: [Symbol.iterator](), next() once
  'n16',
  'n11',
  // Spread: expression statement
  'o2',
  // Exit.
  'y0',
  'z0',
]
print("expected:\n"+ JSON.stringify(expected));

assertArrayEquals(expected, log);
assertEquals(54, s);
assertNull(exception);