Fix iterate pages tests

src/Service/IteratePagesService.php

@@ -38,9 +38,14 @@ public function handle(string $path = null): CancellablePromiseInterface
         ) use ($path) {
             $promise = $this->requestService->
                 handle(new Request('GET', $path))->
-                done(function ($response) use ($observer) {
-                    return $this->handleResponse($response, $observer);
-                })
+                then(
+                    function ($response) use ($observer) {
+                        return $this->handleResponse($response, $observer);
+                    },
+                    function ($error) use ($observer) {
+                        $observer->onError($error);
+                    }
+                )
             ;
 
             return new CallbackDisposable(function () use ($promise) {
@@ -93,6 +98,9 @@ private function handleResponseContentsComplete(
         return $this->handleResponseContents($response, $observer)->then(function () use ($observer) {
             $observer->onCompleted();
             return new FulfilledPromise();
+        }, function ($error) use ($observer) {
+            $observer->onError($error);
+            return new FulfilledPromise();
         });
     }
 

tests/CommandBus/Command/IteratePagesCommandTest.php

@@ -5,12 +5,12 @@
 use ApiClients\Client\Github\CommandBus\Command\IteratePagesCommand;
 use ApiClients\Tools\TestUtilities\TestCase;
 
-class IteratePagesCommandTest extends TestCase
+final class IteratePagesCommandTest extends TestCase
 {
     public function testCommand()
     {
         $path = '/foo.bar';
         $command = new IteratePagesCommand($path);
-        $this->assertSame($path, $command->getPath());
+        self::assertSame($path, $command->getPath());
     }
 }