blob: cb694b950de3b14ad49ac9e0741e723190dbab19 [file] [log] [blame]
// Copyright (c) 2013, 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.
import 'dart:math';
import 'package:expect/expect.dart';
main() {
// constructor
{
var point = new Point(0, 0);
Expect.equals(0, point.x);
Expect.equals(0, point.y);
Expect.equals('Point(0, 0)', '$point');
}
// constructor X
{
var point = new Point<int>(10, 0);
Expect.equals(10, point.x);
Expect.equals(0, point.y);
Expect.equals('Point(10, 0)', '$point');
}
// constructor X Y
{
var point = new Point<int>(10, 20);
Expect.equals(10, point.x);
Expect.equals(20, point.y);
Expect.equals('Point(10, 20)', '$point');
}
// constructor X Y double
{
var point = new Point<double>(10.5, 20.897);
Expect.equals(10.5, point.x);
Expect.equals(20.897, point.y);
Expect.equals('Point(10.5, 20.897)', '$point');
}
// constructor X Y NaN
{
var point = new Point(double.NAN, 1000);
Expect.isTrue(point.x.isNaN);
Expect.equals(1000, point.y);
Expect.equals('Point(NaN, 1000)', '$point');
}
// squaredDistanceTo
{
var a = new Point(7, 11);
var b = new Point(3, -1);
Expect.equals(160, a.squaredDistanceTo(b));
Expect.equals(160, b.squaredDistanceTo(a));
}
// distanceTo
{
var a = new Point(-2, -3);
var b = new Point(2, 0);
Expect.equals(5, a.distanceTo(b));
Expect.equals(5, b.distanceTo(a));
}
// subtract
{
var a = new Point(5, 10);
var b = new Point(2, 50);
Expect.equals(new Point(3, -40), a - b);
}
// add
{
var a = new Point(5, 10);
var b = new Point(2, 50);
Expect.equals(new Point(7, 60), a + b);
}
// hashCode
{
var a = new Point(0, 1);
var b = new Point(0, 1);
Expect.equals(b.hashCode, a.hashCode);
var c = new Point(1, 0);
Expect.isFalse(a.hashCode == c.hashCode);
}
// magnitude
{
var a = new Point(5, 10);
var b = new Point(0, 0);
Expect.equals(a.distanceTo(b), a.magnitude);
Expect.equals(0, b.magnitude);
var c = new Point(-5, -10);
Expect.equals(a.distanceTo(b), c.magnitude);
}
}