get( \Magento\Backend\Model\UrlInterface::class )->turnOffSecretKey(); $this->getRequest()->setPostValue(['email' => 'dummy@dummy.com', 'captcha' => '1234']); $this->dispatch('backend/admin/auth/forgotpassword'); $this->assertSessionMessages( $this->equalTo(['Incorrect CAPTCHA']), \Magento\Framework\Message\MessageInterface::TYPE_ERROR ); } }