/**
  * Test that we can get and set the unit
  *
  * @covers \OpenWeatherMap\Entity\Humidity::getUnit
  * @covers \OpenWeatherMap\Entity\Humidity::setUnit
  */
 public function testGetSetUnit()
 {
     $humidity = new Humidity();
     $unit = '%';
     $this->assertNull($humidity->getUnit());
     $this->assertSame($humidity, $humidity->setUnit($unit));
     $this->assertEquals($unit, $humidity->getUnit());
 }