blob: be9ec138e1dac262464de00e3488a1eedcdb5bcd [file] [log] [blame]
// 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";
int zero() {
return 0;
}
int one() {
return 1;
}
int minus1() {
return 0 - 1;
}
int two() {
return 2;
}
int three() {
return 3;
}
int five() {
return 5;
}
int minus5() {
return 0 - 5;
}
int ninetyNine() {
return 99;
}
int four99() {
return 499;
}
int four99times99() {
return 499 * 99;
}
int four99times99plus1() {
return 499 * 99 + 1;
}
void postPlusPlusTest() {
var x = zero();
var y = x++;
Expect.equals(0, y);
Expect.equals(1, x);
Expect.equals(1, x++);
Expect.equals(2, x);
}
void prePlusPlusTest() {
var x = zero();
var y = ++x;
Expect.equals(1, x);
Expect.equals(1, y);
Expect.equals(2, ++x);
Expect.equals(2, ++y);
}
void postMinusMinusTest() {
var x = four99();
var y = x--;
Expect.equals(499, y);
Expect.equals(498, x);
Expect.equals(498, x--);
Expect.equals(497, x);
}
void preMinusMinusTest() {
var x = four99();
var y = --x;
Expect.equals(498, y);
Expect.equals(498, x);
Expect.equals(497, --x);
Expect.equals(497, x);
}
void main() {
postPlusPlusTest();
prePlusPlusTest();
postMinusMinusTest();
preMinusMinusTest();
}