[DBAL-407] Implement and detect not unique field value exception for sqlite

lib/Doctrine/DBAL/DBALException.php

@@ -28,6 +28,7 @@ class DBALException extends \Exception
     const ERROR_NOT_NULL = 5;
     const ERROR_BAD_FIELD_NAME = 6;
     const ERROR_NON_UNIQUE_FIELD_NAME = 7;
+    const ERROR_NOT_UNIQUE = 8;
 
     /**
      * @param string $method

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

@@ -124,9 +124,14 @@ class Driver implements \Doctrine\DBAL\Driver
                 if (strpos($exception->getMessage(), 'must be unique') !== false) {
                     return DBALException::ERROR_DUPLICATE_KEY;
                 }
+
                 if (strpos($exception->getMessage(), 'may not be NULL') !== false) {
                     return DBALException::ERROR_NOT_NULL;
                 }
+
+                if (strpos($exception->getMessage(), 'is not unique') !== false) {
+                    return DBALException::ERROR_NOT_UNIQUE;
+                }
             case 'HY000':
                 if (strpos($exception->getMessage(), 'no such table:') !== false) {
                     return DBALException::ERROR_UNKNOWN_TABLE;

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

@@ -115,7 +115,6 @@ class ExceptionTest extends \Doctrine\Tests\DbalFunctionalTestCase
         $table2 = $schema->createTable("ambiguous_list_table_2");
         $table2->addColumn('id', 'integer');
 
-
         foreach ($schema->toSql($this->_conn->getDatabasePlatform()) AS $sql) {
             $this->_conn->executeQuery($sql);
         }
@@ -123,7 +122,23 @@ class ExceptionTest extends \Doctrine\Tests\DbalFunctionalTestCase
         $sql = 'SELECT id FROM ambiguous_list_table, ambiguous_list_table_2';
         $this->setExpectedException('\Doctrine\DBAL\DBALException', null, DBALException::ERROR_NON_UNIQUE_FIELD_NAME);
         $this->_conn->executeQuery($sql);
+    }
+
+    public function testNotUniqueException()
+    {
+        $schema = new \Doctrine\DBAL\Schema\Schema();
+
+        $table = $schema->createTable("unique_field_table");
+        $table->addColumn('id', 'integer');
+        $table->addUniqueIndex(array('id'));
+
+        foreach ($schema->toSql($this->_conn->getDatabasePlatform()) AS $sql) {
+            $this->_conn->executeQuery($sql);
+        }
 
+        $this->_conn->insert("unique_field_table", array('id' => 5));
+        $this->setExpectedException('\Doctrine\DBAL\DBALException', null, DBALException::ERROR_NOT_UNIQUE);
+        $this->_conn->insert("unique_field_table", array('id' => 5));
     }
 
     protected function onNotSuccessfulTest(\Exception $e)