[DBAL-407] Implement and detect SqLite connection exceptions

lib/Doctrine/DBAL/DBALException.php

@@ -30,6 +30,8 @@ class DBALException extends \Exception
     const ERROR_NON_UNIQUE_FIELD_NAME = 7;
     const ERROR_NOT_UNIQUE = 8;
     const ERROR_SYNTAX = 9;
+    const ERROR_UNABLE_TO_OPEN = 10;
+    const ERROR_WRITE_READONLY = 11;
 
     /**
      * @param string $method

lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php

@@ -152,6 +152,14 @@ class Driver implements \Doctrine\DBAL\Driver
                 if (strpos($exception->getMessage(), 'syntax error') !== false) {
                     return DBALException::ERROR_SYNTAX;
                 }
+
+                if (strpos($exception->getMessage(), 'unable to open database file') !== false) {
+                    return DBALException::ERROR_UNABLE_TO_OPEN;
+                }
+
+                if (strpos($exception->getMessage(), 'attempt to write a readonly database') !== false) {
+                    return DBALException::ERROR_WRITE_READONLY;
+                }
         }
 
         return 0;

tests/Doctrine/Tests/DBAL/Functional/ExceptionTest.php

@@ -164,5 +164,47 @@ class ExceptionTest extends \Doctrine\Tests\DbalFunctionalTestCase
         }
         var_dump($e);
     }
+
+    /**
+     * @dataProvider getSqLiteOpenConnection
+     */
+    public function testConnectionExceptionSqLite($mode, $exceptionCode)
+    {
+        if ($this->_conn->getDatabasePlatform()->getName() != 'sqlite') {
+            $this->markTestSkipped("Only fails this way on sqlite");
+        }
+
+        $filename = sprintf('%s/%s', sys_get_temp_dir(), 'doctrine_failed_connection.db');
+
+        if (file_exists($filename)) {
+                unlink($filename);
+            }
+
+        touch($filename);
+        chmod($filename, $mode);
+
+        $params = array(
+                'driver' => 'pdo_sqlite',
+                'path'   => $filename,
+            );
+        $conn = \Doctrine\DBAL\DriverManager::getConnection($params);
+
+        $schema = new \Doctrine\DBAL\Schema\Schema();
+        $table = $schema->createTable("no_connection");
+        $table->addColumn('id', 'integer');
+
+        $this->setExpectedException('\Doctrine\DBAL\DBALException', null, $exceptionCode);
+        foreach ($schema->toSql($conn->getDatabasePlatform()) AS $sql) {
+                $conn->executeQuery($sql);
+            }
+    }
+
+    public function getSqLiteOpenConnection(){
+            return array(
+                    array(0000, DBALException::ERROR_UNABLE_TO_OPEN),
+                    array(0444, DBALException::ERROR_WRITE_READONLY),
+                );
+    }
+
 }
  
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