Add unit enum tests

Author: Kirill Nesmeyanov

tests/Context/Provider/TypeContext/EnumTypeContext.php

@@ -7,9 +7,11 @@
 use Behat\Step\Given;
 use TypeLang\Mapper\Tests\Stub\IntBackedEnumStub;
 use TypeLang\Mapper\Tests\Stub\StringBackedEnumStub;
+use TypeLang\Mapper\Tests\Stub\UnitEnumStub;
 use TypeLang\Mapper\Type\BackedEnumType;
 use TypeLang\Mapper\Type\IntType;
 use TypeLang\Mapper\Type\StringType;
+use TypeLang\Mapper\Type\UnitEnumType;
 
 /**
  * @api
@@ -34,4 +36,16 @@ class: StringBackedEnumStub::class,
             type: new StringType(),
         ));
     }
+
+    #[Given('/^type "unit-enum"$/')]
+    public function givenUnitEnumType(): void
+    {
+        $this->setCurrent(new UnitEnumType(
+            class: UnitEnumStub::class,
+            cases: \array_map(static function (UnitEnumStub $case): string {
+                return $case->name;
+            }, UnitEnumStub::cases()),
+            type: new StringType(),
+        ));
+    }
 }