public function testCanCalculateAverageValue()
 {
     $average1 = array(5, 10, 15, 20);
     $average2 = array('foo', 'b', 'ar');
     $average3 = array(array('lol'), 10, 20);
     $average1 = Arrays::average($average1);
     $average2 = Arrays::average($average2);
     $average3 = Arrays::average($average3);
     $this->assertEquals(13, $average1);
     $this->assertEquals(0, $average2);
     $this->assertEquals(10, $average3);
 }
 public function testCanCalculateAverageValue()
 {
     $average1 = [5, 10, 15, 20];
     $average2 = ['foo', 'b', 'ar'];
     $average3 = [['lol'], 10, 20];
     $average1 = Arrays::average($average1);
     $average2 = Arrays::average($average2);
     $average3 = Arrays::average($average3);
     $this->assertEquals(13, $average1);
     $this->assertEquals(0, $average2);
     $this->assertEquals(10, $average3);
 }