Synchronized support of FilterCollection with ODM by adding missing method

lib/Doctrine/ORM/Query/FilterCollection.php

@@ -104,11 +104,13 @@ public function getEnabledFilters()
      */
     public function enable($name)
     {
-        if (null === $filterClass = $this->config->getFilterClassName($name)) {
+        if ( ! $this->has($name)) {
             throw new \InvalidArgumentException("Filter '" . $name . "' does not exist.");
         }
 
-        if (!isset($this->enabledFilters[$name])) {
+        if ( ! $this->isEnabled($name)) {
+            $filterClass = $this->config->getFilterClassName($name);
+
             $this->enabledFilters[$name] = new $filterClass($this->em);
 
             // Keep the enabled filters sorted for the hash
@@ -154,13 +156,25 @@ public function disable($name)
      */
     public function getFilter($name)
     {
-        if (!isset($this->enabledFilters[$name])) {
+        if ( ! $this->isEnabled($name)) {
             throw new \InvalidArgumentException("Filter '" . $name . "' is not enabled.");
         }
 
         return $this->enabledFilters[$name];
     }
 
+    /**
+     * Checks whether filter with given name is defined.
+     *
+     * @param string $name Name of the filter.
+     *
+     * @return bool true if the filter exists, false if not.
+     */
+    public function has($name)
+    {
+        return null !== $this->config->getFilterClassName($name);
+    }
+
     /**
      * Checks if a filter is enabled.
      * 
@@ -194,6 +208,7 @@ public function getHash()
         }
 
         $filterHash = '';
+
         foreach ($this->enabledFilters as $name => $filter) {
             $filterHash .= $name . $filter;
         }

tests/Doctrine/Tests/ORM/Query/FilterCollectionTest.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Query;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+use Doctrine\ORM\Mapping\ClassMetaData,
+    Doctrine\ORM\Query\Filter\SQLFilter;
+
+/**
+ * Test case for FilterCollection
+ *
+ * @author Guilherme Blanco <[email protected]>
+ */
+class FilterCollectionTest extends \Doctrine\Tests\OrmTestCase
+{
+    /**
+     * @var \Doctrine\ORM\EntityManager
+     */
+    private $em;
+
+    protected function setUp()
+    {
+        $this->em = $this->_getTestEntityManager();
+
+        $this->em->getConfiguration()->addFilter('testFilter', 'Doctrine\Tests\ORM\Query\MyFilter');
+    }
+
+    public function testEnable()
+    {
+        $filterCollection = $this->em->getFilters();
+
+        $this->assertCount(0, $filterCollection->getEnabledFilters());
+
+        $filterCollection->enable('testFilter');
+
+        $enabledFilters = $filterCollection->getEnabledFilters();
+
+        $this->assertCount(1, $enabledFilters);
+        $this->assertContainsOnly('Doctrine\Tests\ORM\Query\MyFilter', $enabledFilters);
+
+        $filterCollection->disable('testFilter');
+        $this->assertCount(0, $filterCollection->getEnabledFilters());
+    }
+
+    public function testHasFilter()
+    {
+        $filterCollection = $this->em->getFilters();
+
+        $this->assertTrue($filterCollection->has('testFilter'));
+        $this->assertFalse($filterCollection->has('fakeFilter'));
+    }
+
+    /**
+     * @depends testEnable
+     */
+    public function testIsEnabled()
+    {
+        $filterCollection = $this->em->getFilters();
+
+        $this->assertFalse($filterCollection->isEnabled('testFilter'));
+
+        $filterCollection->enable('testFilter');
+
+        $this->assertTrue($filterCollection->isEnabled('testFilter'));
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testGetFilterInvalidArgument()
+    {
+        $filterCollection = $this->em->getFilters();
+
+        $filterCollection->getFilter('testFilter');
+    }
+
+    public function testGetFilter()
+    {
+        $filterCollection = $this->em->getFilters();
+
+        $filterCollection->enable('testFilter');
+
+        $this->assertInstanceOf('Doctrine\Tests\ORM\Query\MyFilter', $filterCollection->getFilter('testFilter'));
+    }
+}
+
+class MyFilter extends SQLFilter
+{
+    public function addFilterConstraint(ClassMetadata $targetEntity, $targetTableAlias)
+    {
+        // getParameter applies quoting automatically
+        return $targetTableAlias . '.id = ' . $this->getParameter('id');
+    }
+}