Add tests for getData & setData methods

Signed-off-by: Tom Van Herreweghe <tom@king-foo.be>

Author: Tom Van Herreweghe

tests/PHPExif/ExifTest.php

@@ -41,6 +41,32 @@ public function testSetRawData()
         $this->assertEquals($this->exif, $result);
     }
 
+    /**
+     * @group exif
+     */
+    public function testGetData()
+    {
+        $reflProperty = new \ReflectionProperty('\PHPExif\Exif', 'data');
+        $reflProperty->setAccessible(true);
+
+        $this->assertEquals($reflProperty->getValue($this->exif), $this->exif->getData());
+    }
+
+    /**
+     * @group exif
+     */
+    public function testSetData()
+    {
+        $testData = array('foo', 'bar', 'baz');
+        $reflProperty = new \ReflectionProperty('\PHPExif\Exif', 'data');
+        $reflProperty->setAccessible(true);
+
+        $result = $this->exif->setData($testData);
+
+        $this->assertEquals($testData, $reflProperty->getValue($this->exif));
+        $this->assertEquals($this->exif, $result);
+    }
+
     /**
      *
      * @dataProvider providerUndefinedPropertiesReturnFalse