Add ChainNoResultException for aggregating ChainProvider exceptions.

Create ChainNoResultException class
Update ChainProvider::getGecodedData/getReversedData methods to
aggregate/throw new exception.
Add tests.

Author: Ben Glassman

src/Geocoder/Exception/ChainNoResultException.php

@@ -0,0 +1,78 @@
+<?php
+
+/**
+ * This file is part of the Geocoder package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @license    MIT License
+ */
+
+namespace Geocoder\Exception;
+
+/**
+ * @author Ben Glassman <[email protected]>
+ */
+class ChainNoResultException extends NoResultException
+{
+
+    /**
+     * Constructor
+     * 
+     * @param string $message 
+     * @param array $exceptions Array of Exception instances
+     * @access public
+     * @return void
+     */
+    public function __construct($message = "", array $exceptions = array())
+    {
+        parent::__construct($message);
+        $this->setExceptions($exceptions);
+    }
+
+    /**
+     * exceptions 
+     * 
+     * @var array
+     * @access private
+     */
+    private $exceptions = array();
+
+    /**
+     * Get the exceptions
+     * 
+     * @access public
+     * @return void
+     */
+    public function getExceptions()
+    {
+        return $this->exceptions;
+    }
+
+    /**
+     * Set the exceptions
+     * 
+     * @param array $exceptions Array of Exception instances
+     * @access public
+     * @return void
+     */
+    public function setExceptions(array $exceptions)
+    {
+        foreach ($exceptions as $exception) {
+            $this->addException($exception);
+        }
+    }
+
+    /**
+     * Add an exception
+     * 
+     * @param Exception $exception 
+     * @access public
+     * @return void
+     */
+    public function addException(\Exception $exception)
+    {
+        $this->exceptions[] = $exception;
+    }
+
+}

src/Geocoder/Provider/ChainProvider.php

@@ -10,8 +10,8 @@
 
 namespace Geocoder\Provider;
 
-use Geocoder\Exception\NoResultException;
 use Geocoder\Exception\InvalidCredentialsException;
+use Geocoder\Exception\ChainNoResultException;
 
 /**
  * @author Markus Bachmann <[email protected]>
@@ -48,33 +48,39 @@ public function addProvider(ProviderInterface $provider)
      */
     public function getGeocodedData($address)
     {
+        $exceptions = array();
+
         foreach ($this->providers as $provider) {
             try {
                 return $provider->getGeocodedData($address);
             } catch (InvalidCredentialsException $e) {
                 throw $e;
             } catch (\Exception $e) {
+                $exceptions[] = $e;
             }
         }
 
-        throw new NoResultException(sprintf('No provider could provide the address "%s"', $address));
+        throw new ChainNoResultException(sprintf('No provider could provide the address "%s"', $address), $exceptions);
     }
 
     /**
      * {@inheritDoc}
      */
     public function getReversedData(array $coordinates)
     {
+        $exceptions = array();
+
         foreach ($this->providers as $provider) {
             try {
                 return $provider->getReversedData($coordinates);
             } catch (InvalidCredentialsException $e) {
                 throw $e;
             } catch (\Exception $e) {
+                $exceptions[] = $e;
             }
         }
 
-        throw new NoResultException(sprintf('No provider could provide the coordinated %s', json_encode($coordinates)));
+        throw new ChainNoResultException(sprintf('No provider could provide the coordinated %s', json_encode($coordinates)), $exceptions);
     }
 
     /**

tests/Geocoder/Tests/Provider/ChainProviderTest.php

@@ -4,6 +4,7 @@
 
 use Geocoder\Tests\TestCase;
 use Geocoder\Provider\ChainProvider;
+use Geocoder\Exception\ChainNoResultException;
 
 /**
  * @author Markus Bachmann <[email protected]>
@@ -42,6 +43,22 @@ public function testGetReversedData()
         $this->assertEquals(array('foo' => 'bar'), $chain->getReversedData(array('11', '22')));
     }
 
+    public function testChainProviderReverseThrowsChainNoResultException()
+    {
+        $mockOne = $this->getMock('Geocoder\\Provider\\ProviderInterface');
+        $mockOne->expects($this->exactly(2))
+            ->method('getReversedData')
+            ->will($this->returnCallback(function() { throw new \Exception; }));
+
+        $chain = new ChainProvider(array($mockOne, $mockOne));
+
+        try {
+            $chain->getReversedData(array('11', '22'));
+        } catch (ChainNoResultException $e) {
+            $this->assertCount(2, $e->getExceptions());
+        }
+    }
+
     public function testGetGeocodedData()
     {
         $mockOne = $this->getMock('Geocoder\\Provider\\ProviderInterface');
@@ -59,4 +76,20 @@ public function testGetGeocodedData()
 
         $this->assertEquals(array('foo' => 'bar'), $chain->getGeocodedData('Paris'));
     }
+
+    public function testChainProviderGeocodeThrowsChainNoResultException()
+    {
+        $mockOne = $this->getMock('Geocoder\\Provider\\ProviderInterface');
+        $mockOne->expects($this->exactly(2))
+            ->method('getGeocodedData')
+            ->will($this->returnCallback(function() { throw new \Exception; }));
+
+        $chain = new ChainProvider(array($mockOne, $mockOne));
+
+        try {
+            $chain->getGeocodedData('Paris');
+        } catch (ChainNoResultException $e) {
+            $this->assertCount(2, $e->getExceptions());
+        }
+    }
 }