[FrameworkBundle] Improve the DX of TemplateController when using SF 4

Author: dunglas

src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php

@@ -67,4 +67,9 @@ public function templateAction(string $template, int $maxAge = null, int $shared
 
         return $response;
     }
+
+    public function __invoke(string $template, int $maxAge = null, int $sharedAge = null, bool $private = null): Response
+    {
+        return $this->templateAction($template, $maxAge, $sharedAge, $private);
+    }
 }

src/Symfony/Bundle/FrameworkBundle/Tests/Controller/TemplateControllerTest.php

@@ -23,21 +23,23 @@ class TemplateControllerTest extends TestCase
     public function testTwig()
     {
         $twig = $this->getMockBuilder('Twig\Environment')->disableOriginalConstructor()->getMock();
-        $twig->expects($this->once())->method('render')->willReturn('bar');
+        $twig->expects($this->exactly(2))->method('render')->willReturn('bar');
 
         $controller = new TemplateController($twig);
 
         $this->assertEquals('bar', $controller->templateAction('mytemplate')->getContent());
+        $this->assertEquals('bar', $controller('mytemplate')->getContent());
     }
 
     public function testTemplating()
     {
         $templating = $this->getMockBuilder(EngineInterface::class)->getMock();
-        $templating->expects($this->once())->method('render')->willReturn('bar');
+        $templating->expects($this->exactly(2))->method('render')->willReturn('bar');
 
         $controller = new TemplateController(null, $templating);
 
         $this->assertEquals('bar', $controller->templateAction('mytemplate')->getContent());
+        $this->assertEquals('bar', $controller('mytemplate')->getContent());
     }
 
     /**
@@ -49,5 +51,6 @@ public function testNoTwigNorTemplating()
         $controller = new TemplateController();
 
         $controller->templateAction('mytemplate')->getContent();
+        $controller('mytemplate')->getContent();
     }
 }