Fixed fatal error for unknown macro

CHANGELOG

@@ -1,6 +1,6 @@
 * 1.13.2 (2013-XX-XX)
 
- n/a
+ * fixed fatal error that should be an exception when macro does not exist in template
 
 * 1.13.1 (2013-06-06)
 

lib/Twig/Template.php

@@ -455,10 +455,16 @@ abstract class Twig_Template implements Twig_TemplateInterface
      * @param array         $arguments The arguments of macro
      *
      * @return string The content of a macro
+     *
+     * @throws Twig_Error_Runtime if the macro is not defined
      */
     protected function callMacro(Twig_Template $template, $macro, array $arguments)
     {
         if (!isset($template->macros[$macro]['reflection'])) {
+            if (!isset($template->macros[$macro])) {
+                throw new Twig_Error_Runtime(sprintf('Macro "%s" is not defined in the template "%s".', $macro, $template->getTemplateName()));
+            }
+
             $template->macros[$macro]['reflection'] = new ReflectionMethod($template, $template->macros[$macro]['method']);
         }
 

test/Twig/Tests/Fixtures/exceptions/unknown_macro.test

@@ -0,0 +1,9 @@
+--TEST--
+Exception for unknown macro
+--TEMPLATE--
+{% import _self as macros %}
+{{ macros.foo() }}
+--DATA--
+return array()
+--EXCEPTION--
+Twig_Error_Runtime: Macro "foo" is not defined in the template "index.twig" in "index.twig" at line 3.

test/Twig/Tests/Fixtures/exceptions/unknown_macro_different_template.test

@@ -0,0 +1,11 @@
+--TEST--
+Exception for unknown macro in different template
+--TEMPLATE--
+{% import foo_template as macros %}
+{{ macros.foo() }}
+--TEMPLATE(foo.twig)--
+foo
+--DATA--
+return array('foo_template' => 'foo.twig')
+--EXCEPTION--
+Twig_Error_Runtime: Macro "foo" is not defined in the template "foo.twig" in "index.twig" at line 3.

test/Twig/Tests/TemplateTest.php

@@ -361,6 +361,16 @@ class Twig_Tests_TemplateTest extends PHPUnit_Framework_TestCase
 
         return $tests;
     }
+
+    /**
+     * @expectedException Twig_Error_Runtime
+     * @expectedExceptionMessage Macro "foo" is not defined in the template "my/template".
+     */
+    public function testCallUnknownMacro()
+    {
+        $template = new Twig_TemplateTest($this->getMock('Twig_Environment'));
+        $template->callMacro(new Twig_Tests_TemplateWithMacros('my/template'), 'foo', array());
+    }
 }
 
 class Twig_TemplateTest extends Twig_Template
@@ -419,6 +429,35 @@ class Twig_TemplateTest extends Twig_Template
             return parent::getAttribute($object, $item, $arguments, $type, $isDefinedTest, $ignoreStrictCheck);
         }
     }
+
+    public function callMacro(Twig_Template $template, $macro, array $arguments)
+    {
+        return parent::callMacro($template, $macro, $arguments);
+    }
+}
+
+class Twig_Tests_TemplateWithMacros extends Twig_Template
+{
+    protected $name;
+
+    public function __construct($name, array $macros = array())
+    {
+        $this->name = $name;
+        $this->macros = $macros;
+    }
+
+    public function getTemplateName()
+    {
+        return $this->name;
+    }
+
+    public function getDate()
+    {
+    }
+
+    protected function doDisplay(array $context, array $blocks = array())
+    {
+    }
 }
 
 class Twig_TemplateArrayAccessObject implements ArrayAccess