class TrustedRedirectResponseTest

class TrustedRedirectResponseTest extends UnitTestCase {
    
    /**
     * @covers ::setTargetUrl
     */
    public function testSetTargetUrlWithInternalUrl() {
        $redirect_response = new TrustedRedirectResponse('/example');
        $redirect_response->setTargetUrl('/example2');
        $this->assertEquals('/example2', $redirect_response->getTargetUrl());
    }
    
    /**
     * @covers ::setTargetUrl
     */
    public function testSetTargetUrlWithUntrustedUrl() {
        $request_context = new RequestContext();
        $request_context->setCompleteBaseUrl('https://www.drupal.org');
        $container = new ContainerBuilder();
        $container->set('router.request_context', $request_context);
        \Drupal::setContainer($container);
        $redirect_response = new TrustedRedirectResponse('/example');
        $this->expectException(\InvalidArgumentException::class);
        $redirect_response->setTargetUrl('http://evil-url.com/example');
    }
    
    /**
     * @covers ::setTargetUrl
     */
    public function testSetTargetUrlWithTrustedUrl() {
        $redirect_response = new TrustedRedirectResponse('/example');
        $redirect_response->setTrustedTargetUrl('http://good-external-url.com/example');
        $this->assertEquals('http://good-external-url.com/example', $redirect_response->getTargetUrl());
    }
    
    /**
     * @covers ::createFromRedirectResponse
     * @dataProvider providerCreateFromRedirectResponse
     */
    public function testCreateFromRedirectResponse($redirect_response) {
        $trusted_redirect_response = TrustedRedirectResponse::createFromRedirectResponse($redirect_response);
        // The trusted redirect response is always a CacheableResponseInterface instance.
        $this->assertInstanceOf(CacheableResponseInterface::class, $trusted_redirect_response);
        // But it is only actually cacheable (non-zero max-age) if the redirect
        // response passed to TrustedRedirectResponse::createFromRedirectResponse()
        // is itself cacheable.
        $expected_cacheability = $redirect_response instanceof CacheableResponseInterface ? $redirect_response->getCacheableMetadata() : (new CacheableMetadata())->setCacheMaxAge(0);
        $this->assertEquals($expected_cacheability, $trusted_redirect_response->getCacheableMetadata());
    }
    
    /**
     * @return array
     */
    public function providerCreateFromRedirectResponse() {
        return [
            'cacheable-with-tags' => [
                (new CacheableRedirectResponse('/example'))->addCacheableDependency((new CacheableMetadata())->addCacheTags([
                    'foo',
                ])),
            ],
            'cacheable-with-max-age-0' => [
                (new CacheableRedirectResponse('/example'))->addCacheableDependency((new CacheableMetadata())->setCacheMaxAge(0)),
            ],
            'uncacheable' => [
                new RedirectResponse('/example'),
            ],
        ];
    }

}