Add test group to skip integration tests relying on internet connection

Author: clue

README.md

@@ -178,6 +178,14 @@ To run the test suite, go to the project root and run:
 $ php vendor/bin/phpunit
 ```
 
+The test suite also contains a number of functional integration tests that rely
+on a stable internet connection.
+If you do not want to run these, they can simply be skipped like this:
+
+```bash
+$ php vendor/bin/phpunit --exclude-group internet
+```
+
 ## License
 
 MIT, see [LICENSE file](LICENSE).

tests/FunctionalResolverTest.php

@@ -25,6 +25,9 @@ public function testResolveLocalhostResolves()
         $this->loop->run();
     }
 
+    /**
+     * @group internet
+     */
     public function testResolveGoogleResolves()
     {
         $promise = $this->resolver->resolve('google.com');
@@ -33,6 +36,9 @@ public function testResolveGoogleResolves()
         $this->loop->run();
     }
 
+    /**
+     * @group internet
+     */
     public function testResolveInvalidRejects()
     {
         $promise = $this->resolver->resolve('example.invalid');

tests/Query/ExecutorTest.php

@@ -94,7 +94,7 @@ public function resolveShouldNotStartOrCancelTimerWhenCancelledWithTimeoutIsNull
         $this->executor = new Executor($this->loop, $this->parser, $this->dumper, null);
 
         $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
-        $promise = $this->executor->query('8.8.8.8:53', $query);
+        $promise = $this->executor->query('127.0.0.1:53', $query);
 
         $promise->cancel();