/**
  * @param DayDuration $dayDuration
  * @return MovingDuration
  */
 public function setDuration(DayDuration $dayDuration)
 {
     $this->durations[$dayDuration->getDay()] = $dayDuration->getDuration();
     return $this;
 }
 /**
  * @expectedException \LogicException
  */
 public function testWhenIUseAnInvalidDayIGetAnException()
 {
     $expected = 'madeUpDay';
     $this->assertNotEquals($expected, $this->instance->getDay());
     $this->assertInstanceOf(DayDuration::class, $this->instance->setDay($expected));
 }