/**
* @param Trip|NULl
* @return Step Fluent interface
*/
public function setTrip(Trip $trip = NULL)
{
if ($this->trip != NULL) {
$this->trip->removeStep($this);
}
if ($trip != NULL) {
$trip->addStep($this);
}
$this->trip = $trip;
return $this;
// fluent interface
}
public function testSteps()
{
$a = new Trip('Praha', 'Brno');
$a->addStep(new Step(5, 2, 'turn right'));
$this->assertEquals(1, count($a->steps));
$this->assertEquals(5, $a->distance);
$this->assertEquals(2, $a->duration);
$a->addStep(new Step(60, 75, 'turn left'));
$this->assertEquals(2, count($a->steps));
$this->assertEquals(65, $a->distance);
$this->assertEquals(77, $a->duration);
// sequence orders
$this->assertEquals(1, $a->steps[0]->sequenceOrder);
$this->assertEquals(2, $a->steps[1]->sequenceOrder);
// removing first step
$a->removeStep($a->steps[0]);
// distance and duration of the second step
$this->assertEquals(1, count($a->steps));
$this->assertEquals(60, $a->distance);
$this->assertEquals(75, $a->duration);
}