public function test_random_2() { $arr = array('pig', 'cow', 'dog', 'horse'); Enumerator::random_($arr, 2); $this->assertInternalType('array', $arr); $this->assertEquals(2, count($arr)); $this->assertContains($arr[0], array('pig', 'cow', 'dog', 'horse')); $this->assertContains($arr[1], array('pig', 'cow', 'dog', 'horse')); }