Merge branch 'fix/#2318-fix-listing-table-columns-when-using-external-or-os-authentication-on-oracledb-2.5' into 2.5

Close #2318
Close DBAL-831

Author: Ocramius

lib/Doctrine/DBAL/Platforms/OraclePlatform.php

@@ -657,7 +657,7 @@ public function getListTableColumnsSQL($table, $database = null)
         $colCommentsTableName = "user_col_comments";
         $ownerCondition = '';
 
-        if (null !== $database) {
+        if (null !== $database && '/' !== $database) {
             $database = $this->normalizeIdentifier($database);
             $database = $this->quoteStringLiteral($database->getName());
             $tabColumnsTableName = "all_tab_columns";

tests/Doctrine/Tests/DBAL/Platforms/OraclePlatformTest.php

@@ -706,6 +706,63 @@ public function testQuotedTableNames()
         $this->assertEquals($createTriggerStatement, $sql[3]);
     }
 
+    /**
+     * @dataProvider getReturnsGetListTableColumnsSQL
+     * @group DBAL-831
+     */
+    public function testReturnsGetListTableColumnsSQL($database, $expectedSql)
+    {
+        // note: this assertion is a bit strict, as it compares a full SQL string.
+        // Should this break in future, then please try to reduce the matching to substring matching while reworking
+        // the tests
+        $this->assertEquals($expectedSql, $this->_platform->getListTableColumnsSQL('"test"', $database));
+    }
+
+    public function getReturnsGetListTableColumnsSQL()
+    {
+        return array(
+            array(
+                null,
+                "SELECT   c.*,
+                         (
+                             SELECT d.comments
+                             FROM   user_col_comments d
+                             WHERE  d.TABLE_NAME = c.TABLE_NAME
+                             AND    d.COLUMN_NAME = c.COLUMN_NAME
+                         ) AS comments
+                FROM     user_tab_columns c
+                WHERE    c.table_name = 'test' 
+                ORDER BY c.column_name"
+            ),
+            array(
+                '/',
+                "SELECT   c.*,
+                         (
+                             SELECT d.comments
+                             FROM   user_col_comments d
+                             WHERE  d.TABLE_NAME = c.TABLE_NAME
+                             AND    d.COLUMN_NAME = c.COLUMN_NAME
+                         ) AS comments
+                FROM     user_tab_columns c
+                WHERE    c.table_name = 'test' 
+                ORDER BY c.column_name"
+            ),
+            array(
+                'scott',
+                "SELECT   c.*,
+                         (
+                             SELECT d.comments
+                             FROM   all_col_comments d
+                             WHERE  d.TABLE_NAME = c.TABLE_NAME
+                             AND    d.COLUMN_NAME = c.COLUMN_NAME
+                         ) AS comments
+                FROM     all_tab_columns c
+                WHERE    c.table_name = 'test' AND c.owner = 'SCOTT'
+                ORDER BY c.column_name"
+            ),
+        );
+    }
+
     /**
      * {@inheritdoc}
      */