Add missing return types to tests/internal/final methods

Author: nicolas-grekas

Constraint.php

@@ -297,7 +297,7 @@ public function getTargets()
      *
      * @internal
      */
-    public function __sleep()
+    public function __sleep(): array
     {
         // Initialize "groups" option if it is not set
         $this->groups;

Constraints/Compound.php

@@ -35,12 +35,12 @@ public function __construct($options = null)
         parent::__construct($options);
     }
 
-    final protected function getCompositeOption()
+    final protected function getCompositeOption(): string
     {
         return 'constraints';
     }
 
-    final public function validatedBy()
+    final public function validatedBy(): string
     {
         return CompoundValidator::class;
     }

Tests/Constraints/CompoundTest.php

@@ -46,7 +46,7 @@ class ForwardingOptionCompound extends Compound
 {
     public $min;
 
-    public function getDefaultOption()
+    public function getDefaultOption(): ?string
     {
         return 'min';
     }

Tests/Mapping/ClassMetadataTest.php

@@ -373,12 +373,12 @@ class ClassCompositeConstraint extends Composite
 {
     public $nested;
 
-    public function getDefaultOption()
+    public function getDefaultOption(): ?string
     {
         return $this->getCompositeOption();
     }
 
-    protected function getCompositeOption()
+    protected function getCompositeOption(): string
     {
         return 'nested';
     }

Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php

@@ -176,7 +176,7 @@ public function loadClassMetadata(ClassMetadata $metadata): bool
 
 class PropertyGetterInterfaceConstraintLoader implements LoaderInterface
 {
-    public function loadClassMetadata(ClassMetadata $metadata)
+    public function loadClassMetadata(ClassMetadata $metadata): bool
     {
         if (PropertyGetterInterface::class === $metadata->getClassName()) {
             $metadata->addGetterConstraint('property', new NotBlank());

Tests/Mapping/MemberMetadataTest.php

@@ -121,12 +121,12 @@ class PropertyCompositeConstraint extends Composite
 {
     public $nested;
 
-    public function getDefaultOption()
+    public function getDefaultOption(): ?string
     {
         return $this->getCompositeOption();
     }
 
-    protected function getCompositeOption()
+    protected function getCompositeOption(): string
     {
         return 'nested';
     }