Added unit tests for primitive typecasts

tests/JMS/Serializer/Tests/Serializer/GraphNavigatorTest.php

@@ -121,6 +121,58 @@ class GraphNavigatorTest extends \PHPUnit_Framework_TestCase
         $this->navigator->accept($object, null, $this->visitor);
     }
 
+    public function getPrimitiveTypes()
+    {
+        return array(
+            array(
+                'type' => 'boolean',
+                'data' => true,
+            ),
+            array(
+                'type' => 'boolean',
+                'data' => 1,
+            ),
+            array(
+                'type' => 'integer',
+                'data' => 123,
+            ),
+            array(
+                'type' => 'integer',
+                'data' => "123",
+            ),
+            array(
+                'type' => 'string',
+                'data' => "hello",
+            ),
+            array(
+                'type' => 'string',
+                'data' => 123,
+            ),
+            array(
+                'type' => 'double',
+                'data' => 0.1234,
+            ),
+            array(
+                'type' => 'double',
+                'data' => "0.1234",
+            ),
+        );
+    }
+
+    /**
+     * @dataProvider getPrimitiveTypes
+     * @param  string $primitiveType
+     * @param  mixed  $data
+     */
+    public function testSerializationCastsType($primitiveType, $data)
+    {
+        $this->navigator = new GraphNavigator(GraphNavigator::DIRECTION_SERIALIZATION, $this->metadataFactory, 'foo', $this->handlerRegistry, $this->objectConstructor, null, $this->dispatcher);
+
+        $this->visitor->expects($this->once())
+            ->method('visit' . ucfirst($primitiveType));
+        $this->navigator->accept($data, array('name' => $primitiveType), $this->visitor);
+    }
+
     protected function setUp()
     {
         $this->visitor = $this->getMock('JMS\Serializer\VisitorInterface');