Added throw exception conflict resolver

Author: dantleech

AutoRoute/ConflictResolver/Exception/ExistingUrlException.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\ConflictResolver\Exception;
+
+/**
+ * Exception thrown when there is an existing URL and
+ * the "ThrowException" conflict resolver is used.
+ *
+ * @author Daniel Leech <[email protected]>
+ */
+class ExistingUrlException extends \Exception
+{
+}

AutoRoute/ConflictResolver/ThrowExceptionConflictResolver.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\ConflictResolver;
+
+use Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\ConflictResolverInterface;
+use Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\UrlContext;
+use Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\Adapter\AdapterInterface;
+
+/**
+ * This conflcit resolver "resolves" conflicts by throwing exceptions.
+ *
+ * @author Daniel Leech <[email protected]>
+ */
+class ThrowExceptionConflictResolver implements ConflictResolverInterface
+{
+    /**
+     * {@inheritDoc}
+     */
+    public function resolveConflict(UrlContext $urlContext)
+    {
+        $url = $urlContext->getUrl();
+
+        throw new Exception\ExistingUrlException(sprintf(
+            'There already exists an auto route for URL "%s" and the system is configured ' . 
+            'to throw this exception in this case. Alternatively you can choose to use a ' .
+            'different strategy, for example, auto incrementation. Please refer to the ' .
+            'documentation for more information.',
+            $url
+        ));
+    }
+}
+

Tests/Unit/AutoRoute/ConflictResolver/ThrowExceptionConflictHandlerTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Symfony\Cmf\Bundle\RoutingAutoBundle\Tests\Unit\AutoRoute\ConflictResolver;
+
+use Symfony\Cmf\Bundle\RoutingAutoBundle\Tests\Unit\BaseTestCase;
+use Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\ConflictResolver\ThrowExceptionConflictResolver;
+
+class ThrowExceptionConflictResolverTest extends BaseTestCase
+{
+    protected $adapter;
+
+    public function setUp()
+    {
+        parent::setUp();
+        $this->conflictResolver = new ThrowExceptionConflictResolver();
+        $this->urlContext = $this->prophesize('Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\UrlContext');
+    }
+
+    /**
+     * @expectedException Symfony\Cmf\Bundle\RoutingAutoBundle\AutoRoute\ConflictResolver\Exception\ExistingUrlException
+     * @expectedExceptionMessage There already exists an auto route for URL "/foobar"
+     */
+    public function testResolveConflict()
+    {
+        $this->urlContext->getUrl()->willReturn('/foobar');
+        $this->conflictResolver->resolveConflict($this->urlContext->reveal());
+    }
+}
+