throw exception in render for invalid model

hrevert · Aug 23, 2014 · f60f2d4 · f60f2d4
1 parent a1347d3
commit f60f2d4
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diff --git a/src/View/Renderer/ImageRenderer.php b/src/View/Renderer/ImageRenderer.php
@@ -50,5 +50,11 @@ public function render($nameOrModel, $values = null)
 
             return $image->get($format);
         }
+
+        throw new Exception\InvalidArgumentException(sprintf(
+            '%s expects argument 1 to be an instance of HtImgModule\View\Model\ImageModel, %s provided instead',
+            __METHOD__,
+            is_object($nameOrModel) ? get_class($nameOrModel) : gettype($nameOrModel)
+        ));
     }
 }
diff --git a/tests/HtImgModuleTest/View/Renderer/ImageRendererTest.php b/tests/HtImgModuleTest/View/Renderer/ImageRendererTest.php
@@ -3,6 +3,7 @@
 
 use HtImgModule\View\Renderer\ImageRenderer;
 use HtImgModule\View\Model\ImageModel;
+use Zend\View\Model\ViewModel;
 
 class ImageRendererTest extends \PHPUnit_Framework_TestCase
 {
@@ -20,6 +21,13 @@ public function testRender()
         $this->assertEquals('image-binary-string', $renderer->render($model));
     }
 
+    public function testGetExceptionWhenModelIsInvalid()
+    {
+        $renderer = new ImageRenderer;
+        $this->setExpectedException('HtImgModule\Exception\InvalidArgumentException');
+        $renderer->render(new ViewModel);
+    }
+
     public function testGetEngine()
     {
         $renderer = new ImageRenderer;