Fix 'Call to a member function hasChildren() on boolean'

- This seems to occur when the DefaultRenderingStrategy tries to render
  a result that is not an instance of Zend\View\Model\ModelInterface, in
  my case the result was a boolean true.
- I'm checking for ModelInterface rather than ConsoleModel as the render
  method seems to work with any ModelInterface, not just ConsoleModel

Author: skl

src/View/Console/DefaultRenderingStrategy.php

@@ -15,6 +15,7 @@
 use Zend\Mvc\MvcEvent;
 use Zend\Stdlib\ResponseInterface as Response;
 use Zend\View\Model\ConsoleModel as ConsoleViewModel;
+use Zend\View\Model\ModelInterface;
 
 class DefaultRenderingStrategy extends AbstractListenerAggregate
 {
@@ -42,7 +43,7 @@ public function render(MvcEvent $e)
         // marshal arguments
         $response  = $e->getResponse();
 
-        if (empty($result)) {
+        if (!$result instanceof ModelInterface) {
             // There is absolutely no result, so there's nothing to display.
             // We will return an empty response object
             return $response;
@@ -51,6 +52,7 @@ public function render(MvcEvent $e)
         // Collect results from child models
         $responseText = '';
         if ($result->hasChildren()) {
+            /* @var ModelInterface $child */
             foreach ($result->getChildren() as $child) {
                 // Do not use ::getResult() method here as we cannot be sure if
                 // children are also console models.

test/View/Console/DefaultRenderingStrategyTest.php

@@ -10,7 +10,9 @@
 namespace ZendTest\Mvc\View\Console;
 
 use PHPUnit_Framework_TestCase as TestCase;
+use Zend\Console\Adapter\AbstractAdapter;
 use Zend\EventManager\EventManager;
+use Zend\Mvc\ApplicationInterface;
 use Zend\Mvc\MvcEvent;
 use Zend\Mvc\View\Console\DefaultRenderingStrategy;
 use Zend\ServiceManager\ServiceManager;
@@ -36,6 +38,8 @@ public function testAttachesRendererAtExpectedPriority()
         $expectedCallback = [$this->strategy, 'render'];
         $expectedPriority = -10000;
         $found            = false;
+
+        /* @var \Zend\Stdlib\CallbackHandler $listener */
         foreach ($listeners as $listener) {
             $callback = $listener->getCallback();
             if ($callback === $expectedCallback) {
@@ -60,24 +64,22 @@ public function testCanDetachListenersFromEventManager()
 
     public function testIgnoresNonConsoleModelNotContainingResultKeyWhenObtainingResult()
     {
-        $console = $this->getMock('Zend\Console\Adapter\AbstractAdapter');
+        $console = $this->getMock(AbstractAdapter::class);
         $console
             ->expects($this->any())
             ->method('encodeText')
-            ->willReturnArgument(0)
-        ;
+            ->willReturnArgument(0);
 
         //Register console service
         $sm = new ServiceManager();
         $sm->setService('console', $console);
 
-        /** @var \PHPUnit_Framework_MockObject_MockObject|\Zend\Mvc\ApplicationInterface $mockApplication */
-        $mockApplication = $this->getMock('Zend\Mvc\ApplicationInterface');
+        /* @var \PHPUnit_Framework_MockObject_MockObject|ApplicationInterface $mockApplication */
+        $mockApplication = $this->getMock(ApplicationInterface::class);
         $mockApplication
             ->expects($this->any())
             ->method('getServiceManager')
-            ->willReturn($sm)
-        ;
+            ->willReturn($sm);
 
         $event    = new MvcEvent();
         $event->setApplication($mockApplication);
@@ -90,4 +92,33 @@ public function testIgnoresNonConsoleModelNotContainingResultKeyWhenObtainingRes
         $content = $response->getContent();
         $this->assertNotContains('Page not found', $content);
     }
+
+    public function testIgnoresNonModel()
+    {
+        $console = $this->getMock(AbstractAdapter::class);
+        $console
+            ->expects($this->any())
+            ->method('encodeText')
+            ->willReturnArgument(0);
+
+        //Register console service
+        $sm = new ServiceManager();
+        $sm->setService('console', $console);
+
+        /* @var \PHPUnit_Framework_MockObject_MockObject|ApplicationInterface $mockApplication */
+        $mockApplication = $this->getMock(ApplicationInterface::class);
+        $mockApplication
+            ->expects($this->any())
+            ->method('getServiceManager')
+            ->willReturn($sm);
+
+        $event    = new MvcEvent();
+        $event->setApplication($mockApplication);
+
+        $model    = true;
+        $response = new Response();
+        $event->setResult($model);
+        $event->setResponse($response);
+        $this->assertSame($response, $this->strategy->render($event));
+    }
 }