/**
  * Test isInteger
  *
  * @return void
  */
 public function testIsInteger()
 {
     $this->assertTrue(Validation::isInteger(-10));
     $this->assertTrue(Validation::isInteger(0));
     $this->assertTrue(Validation::isInteger(10));
     $this->assertTrue(Validation::isInteger('-10'));
     $this->assertTrue(Validation::isInteger('0'));
     $this->assertTrue(Validation::isInteger('10'));
     $this->assertFalse(Validation::isInteger('2.5'));
     $this->assertFalse(Validation::isInteger([]));
     $this->assertFalse(Validation::isInteger(new \StdClass()));
     $this->assertFalse(Validation::isInteger('2 bears'));
 }