// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.7

import "package:expect/expect.dart";

void for1() {
  var cond = true;
  var result = 0;
  for (var x = 0; cond; x = x + 1) {
    if (x == 10) cond = false;
    result = result + x;
  }
  Expect.equals(55, result);
}

void for2() {
  var t = 0;
  for (var i = 0; i == 0; i = i + 1) {
    t = t + 10;
  }
  Expect.equals(10, t);
}

void for3() {
  for (var i = 0; i == 1; i = i + 1) {
    Expect.fail('unreachable');
  }
}

void for4() {
  var cond1 = true;
  var result = 0;
  for (var i = 0; cond1; i = i + 1) {
    if (i == 9) cond1 = false;
    var cond2 = true;
    for (var j = 0; cond2; j = j + 1) {
      if (j == 9) cond2 = false;
      result = result + 1;
    }
  }
  Expect.equals(100, result);
}

void for5() {
  var i;
  var sum = 0;
  for (i = 0; i < 5; i++) {
    sum += i;
  }
  Expect.equals(5, i);
  Expect.equals(10, sum);
}

void for6() {
  var i = 0;
  var sum = 0;
  for (; i < 5; i++) {
    sum += i;
  }
  Expect.equals(5, i);
  Expect.equals(10, sum);

  sum = 0;
  i = 0;
  for (; i < 5;) {
    sum += i;
    i++;
  }
  Expect.equals(5, i);
  Expect.equals(10, sum);

  sum = 0;
  for (i = 0; i < 5;) {
    sum += i;
    i++;
  }
  Expect.equals(5, i);
  Expect.equals(10, sum);
}

void main() {
  for1();
  for2();
  for3();
  for4();
  for5();
  for6();
}