Merge pull request #97 from KartaviK/hotfix/enum-inheritance-compatibility

 Solution for construct enum from inherited enum with incompatible value

Author: mnapoli

src/Enum.php

@@ -41,9 +41,7 @@ abstract class Enum implements \JsonSerializable
     public function __construct($value)
     {
         if ($value instanceof static) {
-            $this->value = $value->getValue();
-
-            return;
+            $value = $value->getValue();
         }
 
         if (!$this->isValid($value)) {

tests/EnumTest.php

@@ -320,4 +320,15 @@ public function testUnserialize()
         $this->assertEquals(EnumFixture::FOO, $value->getValue());
         $this->assertTrue(EnumFixture::FOO()->equals($value));
     }
+
+    /**
+     * @see https://github.com/myclabs/php-enum/issues/95
+     */
+    public function testEnumValuesInheritance()
+    {
+        $this->expectException(\UnexpectedValueException::class);
+        $this->expectExceptionMessage("Value 'value' is not part of the enum MyCLabs\Tests\Enum\EnumFixture");
+        $inheritedEnumFixture = InheritedEnumFixture::VALUE();
+        new EnumFixture($inheritedEnumFixture);
+    }
 }

tests/InheritedEnumFixture.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace MyCLabs\Tests\Enum;
+
+/**
+ * Class InheritedEnumFixture.
+ * @package MyCLabs\Tests\Enum
+ *
+ * @method static InheritedEnumFixture VALUE()
+ */
+class InheritedEnumFixture extends EnumFixture
+{
+    const VALUE = 'value';
+}