cs: keep strict type declarations

Author: soyuka

.php-cs-fixer.dist.php

@@ -109,6 +109,7 @@
         'phpdoc_trim_consecutive_blank_line_separation' => true,
         'phpdoc_var_annotation_correct_order' => true,
         'return_assignment' => true,
+        'declare_strict_types' => true,
         'strict_param' => true,
         'visibility_required' => [
             'elements' => [

src/State/SerializerAwareProviderInterface.php

@@ -27,5 +27,5 @@ interface SerializerAwareProviderInterface
     /**
      * @return void
      */
-    public function setSerializerLocator(ContainerInterface $serializerLocator);
+    public function setSerializerLocator(ContainerInterface $serializerLocator): void;
 }

tests/Fixtures/TestBundle/ApiResource/IsGrantedTestResource.php

@@ -39,7 +39,7 @@ public static function provide(Operation $operation, array $uriVariables = [], a
         return new self();
     }
 
-    public static function provideShouldNotBeCalled(Operation $operation, array $uriVariables = [], array $context = [])
+    public static function provideShouldNotBeCalled(Operation $operation, array $uriVariables = [], array $context = []): void
     {
         throw new \RuntimeException('provider should not get called');
     }

tests/Fixtures/TestBundle/Entity/MappedResourceWithRelationRelatedEntity.php

@@ -32,7 +32,7 @@ public function getId(): ?int
         return $this->id;
     }
 
-    public function setId(?int $id = null)
+    public function setId(?int $id = null): void
     {
         $this->id = $id;
     }

tests/Functional/JsonSchema/JsonSchemaTest.php

@@ -224,7 +224,7 @@ public function testReadOnlySchema(): void
         $this->assertTrue($schema['definitions']['Resource']['properties']['resourceRelated']['readOnly'] ?? false);
     }
 
-    public function testGenIdFalse()
+    public function testGenIdFalse(): void
     {
         $schema = $this->schemaFactory->buildSchema(Product::class, 'jsonld', Schema::TYPE_OUTPUT, $this->operationMetadataFactory->create('_api_/json-stream-products_get_collection'));
         $this->assertThat(['member' => [['aggregateRating' => ['ratingValue' => '1.0', 'reviewCount' => 1]]]], new MatchesJsonSchema($schema));

tests/Functional/ListenerTest.php

@@ -32,7 +32,7 @@ public static function getResources(): array
         ];
     }
 
-    public function testListener()
+    public function testListener(): void
     {
         self::createClient()->request('PATCH', '/original_data_with_listeners/123/verify', [
             'headers' => ['content-type' => 'application/merge-patch+json'],