Inheritance

Author: marc-mabe

README.md

@@ -128,7 +128,7 @@ It's an abstract class that needs to be extended to use it.
     Changed user status: ACTIVE (1)
 
 
-# Installation
+# Install
 
 ## Composer
 
@@ -200,6 +200,21 @@ to a constant.
         protected $value = -1;
     }
 
+## Inheritance
+
+It's also possible to extend other enumerations.
+
+    class MyEnum extends Mabe_Enum
+    {
+        const ONE = 1;
+        const TWO = 2;
+    }
+
+    class EnumInheritance extends MyEnum
+    {
+        const INHERITACE = 'Inheritance';
+    }
+
 
 # New BSD License
 

tests/MabeTest/EnumTest.php

@@ -58,8 +58,17 @@ public function testEnumWithoutDefaultValue()
 	{
 		$this->setExpectedException('InvalidArgumentException');
 		new EnumWithoutDefaultValue();
+	}	
+
+	public function testEnumInheritance()
+	{
+		$enum = new EnumInheritance(EnumInheritance::ONE);
+		$this->assertSame(EnumInheritance::ONE, $enum->getValue());
+
+		$enum = new EnumInheritance(EnumInheritance::INHERITACE);
+		$this->assertSame(EnumInheritance::INHERITACE, $enum->getValue());
 	}
-	
+
 	public function testChangeValueOnConstructor()
 	{
 		$enum = new EnumWithoutDefaultValue(1);
@@ -119,5 +128,10 @@ class EnumWithoutDefaultValue extends Mabe_Enum
 	const TWO = 2;
 }
 
+class EnumInheritance extends EnumWithoutDefaultValue
+{
+	const INHERITACE = 'Inheritance';
+}
+
 class EmptyEnum extends Mabe_Enum
 {}