tests: Use mock web server

This will allow the tests to work offline or if the servers have an outage,
and they will not break if the site changes.

Author: jtojnar

README.md

@@ -357,7 +357,7 @@ Pull requests very welcome, please try to maintain stylistic, structural and nam
 
 ### Testing
 
-There are currently two separate test suites: one, in `tests/Mf2`, is written in phpunit, containing many microformats parsing examples as well as internal parser tests and regression tests for specific issues over php-mf2’s history. Run it with `./vendor/bin/phpunit`. If you do not have a live internet connection, you can exclude tests that depend on it: `./vendor/bin/phpunit --exclude-group internet`.
+There are currently two separate test suites: one, in `tests/Mf2`, is written in phpunit, containing many microformats parsing examples as well as internal parser tests and regression tests for specific issues over php-mf2’s history. Run it with `./vendor/bin/phpunit`.
 
 The other, in `tests/test-suite`, is a custom test harness which hooks up php-mf2 to the cross-platform [microformats test suite](https://github.com/microformats/tests). To run these tests you must first install the tests with `./composer.phar install`. Each test consists of a HTML file and a corresponding JSON file, and the suite can be run with `php ./tests/test-suite/test-suite.php`.
 

composer.json

@@ -21,6 +21,7 @@
         }
     },
     "require-dev": {
+        "donatj/mock-webserver": "^2.10",
         "mf2/tests": "dev-master#e9e2b905821ba0a5b59dab1a8eaf40634ce9cd49",
         "squizlabs/php_codesniffer": "^3.10.2",
         "dealerdirect/phpcodesniffer-composer-installer": "^1.0",

tests/Mf2/ParserTest.php

@@ -2,6 +2,8 @@
 
 namespace Mf2\Parser\Test;
 
+use donatj\MockWebServer\MockWebServer;
+use donatj\MockWebServer\Response as MockWebServerResponse;
 use Mf2\Parser;
 use Mf2;
 use Yoast\PHPUnitPolyfills\TestCases\TestCase;
@@ -266,16 +268,30 @@ public function testParsesNestedMicroformatsWithClassnamesInAnyOrder() {
 		$this->assertEquals('Name', $output['items'][0]['properties']['in-reply-to'][0]['properties']['name'][0]);
 	}
 
-	/**
-	 * @group internet
-	 */
 	public function testFetchMicroformats() {
-		$mf = Mf2\fetch('http://waterpigs.co.uk/');
+		$server = new MockWebServer();
+		$server->start();
+
+		// Obtained from http://waterpigs.co.uk/
+		$indexUrl = $server->setResponseOfPath(
+		    '/',
+		    new MockWebServerResponse(file_get_contents(__DIR__ . '/waterpigs.co.uk_index.html'), [], 200)
+		);
+
+		// Obtained from http://waterpigs.co.uk/photo.jpg
+		$photoUrl = $server->setResponseOfPath(
+		    '/photo.jpg',
+		    new MockWebServerResponse(file_get_contents(__DIR__ . '/waterpigs.co.uk_photo.jpg'), ['content-type: image/jpeg'], 200)
+		);
+
+		$mf = Mf2\fetch($indexUrl);
 		$this->assertArrayHasKey('items', $mf);
 
-		$mf = Mf2\fetch('http://waterpigs.co.uk/photo.jpg', null, $curlInfo);
+		$mf = Mf2\fetch($photoUrl, null, $curlInfo);
 		$this->assertNull($mf);
 		$this->assertStringContainsString('jpeg', $curlInfo['content_type']);
+
+		$server->stop();
 	}
 
 	/**
@@ -381,22 +397,27 @@ public function testApplyTransformationToSrcset() {
 
 	/**
 	 * @see https://github.com/indieweb/php-mf2/issues/84
-	 * @group internet
-	 *
-	 * 2024-04-07: The final photo URL in this test changed over time.
-	 * Updated it to only check that the final URL's hostname was correct,
-	 * not the full photo URL.
 	 */
 	public function testRelativeURLResolvedWithFinalURL() {
-		$mf = Mf2\fetch('http://aaron.pk/4Zn5');
+		$server = new MockWebServer();
+		$server->start();
+
+		// Obtained from http://aaron.pk/4Zn5
+		$url = $server->setResponseOfPath(
+		    '/4Zn5',
+		    new MockWebServerResponse(file_get_contents(__DIR__ . '/aaron.pk_4Zn5.html'), [], 200)
+		);
+
+		$mf = Mf2\fetch($url);
+
+		$server->stop();
 
 		$this->assertArrayHasKey('photo', $mf['items'][0]['properties']);
 
 		$hostname = parse_url($mf['items'][0]['properties']['photo'][0], PHP_URL_HOST);
-		$this->assertEquals('aaronparecki.com', $hostname);
+		$this->assertEquals('127.0.0.1', $hostname);
 
-		// previous assertion: not the photo URL changed over time
-		// $this->assertEquals('https://aaronparecki.com/img/1240x0/2014/12/23/5/photo.jpeg', $mf['items'][0]['properties']['photo'][0]);
+		$this->assertEquals($server->getServerRoot() . '/img/1240x,q60/2014/12/23/5/photo.jpeg', $mf['items'][0]['properties']['photo'][0]);
 	}
 
 	public function testScriptTagContentsRemovedFromTextValue() {