Merge pull request #23 from cocur/json-serializable

Add JsonSerializable interface to Chain

Author: florianeckerstorfer

src/AbstractChain.php

@@ -5,14 +5,15 @@
 use ArrayAccess;
 use ArrayIterator;
 use IteratorAggregate;
+use JsonSerializable;
 
 /**
  * Chain.
  *
  * @author    Florian Eckerstorfer
  * @copyright 2015 Florian Eckerstorfer
  */
-abstract class AbstractChain implements ArrayAccess, IteratorAggregate
+abstract class AbstractChain implements ArrayAccess, IteratorAggregate, JsonSerializable
 {
     /**
      * @var array
@@ -63,4 +64,12 @@ public function offsetUnset($offset)
     {
         unset($this->array[$offset]);
     }
+
+    /**
+     * @return array
+     */
+    public function jsonSerialize()
+    {
+        return $this->array;
+    }
 }

tests/ChainTest.php

@@ -138,4 +138,16 @@ public function chainIsCountable()
         $this->assertInstanceOf('\Countable', $c);
         $this->assertEquals(3, count($c));
     }
+
+    /**
+     * @test
+     * @covers Cocur\Chain\Chain::jsonSerialize()
+     */
+    public function chainIsJsonSerializable()
+    {
+        $c = Chain::create([0, 1, 2]);
+
+        $this->assertInstanceOf('\JsonSerializable', $c);
+        $this->assertEquals('[0,1,2]', json_encode($c));
+    }
 }