Redaxscript\Request::getPost PHP Method

    public function getPost($key = null)
    {
        return self::get($key, 'post');
    }

 /**
  * testPost
  *
  * @since 2.2.0
  */
 public function testPost()
 {
     /* setup */
     Request::setPost('testKey', 'testValue');
     /* result */
     $result = Request::getPost('testKey');
     /* compare */
     $this->assertEquals('testValue', $result);
 }