public function testEquals()
{
$line = new Line(new Coordinate(0, 0), new Coordinate(100, 100));
$clone = clone $line;
$this->assertTrue($line->equals($clone));
$clone->getStart()->move(10, 10);
$this->assertFalse($line->equals($clone));
$clone->getStart()->move(0, 0);
$clone->getEnd()->move(50, 50);
$this->assertFalse($line->equals($clone));
$clone->getEnd()->move(100, 100);
$clone->getColor()->setRed(255);
$this->assertFalse($line->equals($clone));
}
