Initialize enum array in EnumRegistry to avoid TypeError when empty (#54)

Author: yann-eugone

src/EnumRegistry.php

@@ -15,7 +15,7 @@ final class EnumRegistry
     /**
      * @var EnumInterface[]
      */
-    private $enums;
+    private $enums = [];
 
     /**
      * @param EnumInterface $enum

tests/Unit/EnumRegistryTest.php

@@ -33,7 +33,13 @@ public function testGetInvalidException(): void
         $registry->get('type');
     }
 
-    public function testAddNominal(): void
+    public function testEmpty(): void
+    {
+        $registry = new EnumRegistry();
+        self::assertSame([], $registry->all());
+    }
+
+    public function testNominal(): void
     {
         $translator = new Translator([]);
         $state = new StateEnum();