Added test case for undefined option in EcapsulatedOptions.

Author: Bilge

src/Options/EncapsulatedOptions.php

@@ -21,12 +21,12 @@ final public function copy()
     }
 
     /**
-     * Gets the value for the specified option name. Returns the specified
-     * default value if option name is not set.
+     * Gets the value for the specified option name. When option name is not set the default value is retrieved, if
+     * defined, otherwise null.
      *
      * @param string $option Option name.
      *
-     * @return mixed Option value or default value.
+     * @return mixed Option value, default value or null.
      */
     final protected function get($option)
     {

test/Stubs/TestOptions.php

@@ -24,4 +24,9 @@ public function removeFooKey($child)
     {
         unset($this->getReference('foo')[$child]);
     }
+
+    public function getBar()
+    {
+        return $this->get('bar');
+    }
 }

test/Unit/Porter/Options/EncapsulatedOptionsTest.php

@@ -3,9 +3,14 @@
 
 use ScriptFUSIONTest\Stubs\TestOptions;
 
+/**
+ * @see TestOptions
+ */
 final class EncapsulatedOptionsTest extends \PHPUnit_Framework_TestCase
 {
-    /** @var TestOptions */
+    /**
+     * @var TestOptions
+     */
     private $options;
 
     protected function setUp()
@@ -49,4 +54,12 @@ public function testGetReference()
 
         self::assertSame(['baz' => 'baz'], $this->options->getFoo());
     }
+
+    /**
+     * Tests that getting a value that is neither set nor has a default defined returns null.
+     */
+    public function testGetUnset()
+    {
+        self::assertNull($this->options->getBar());
+    }
 }