fix(Table): support for index declared with single field as string

tests/Table/IndexesUsingSingleFieldStringTestCase.php

@@ -0,0 +1,27 @@
+<?php
+
+class Doctrine_Table_IndexesUsingSingleFieldString_TestCase extends Doctrine_UnitTestCase
+{
+    public function prepareTables()
+    {
+        $this->tables = array('IndexDeclaredWithSingleFieldStringRecord');
+
+        parent::prepareTables();
+    }
+
+    public function testSupportIndexesUsingSingleFieldString()
+    {
+    }
+}
+
+class IndexDeclaredWithSingleFieldStringRecord extends Doctrine_Record
+{
+    public function setTableDefinition()
+    {
+        $this->hasColumn('some_column_name', 'string', 255);
+
+        $this->index('single_field_index_as_string', array(
+            'fields' => 'some_column_name',
+        ));
+    }
+}

tests/run.php

@@ -140,6 +140,7 @@
 $core->addTestCase(new Doctrine_Table_TestCase());
 $core->addTestCase(new Doctrine_Table_RemoveColumn_TestCase());
 $core->addTestCase(new Doctrine_Table_NamedQuery_TestCase());
+$core->addTestCase(new Doctrine_Table_IndexesUsingSingleFieldString_TestCase());
 $core->addTestCase(new Doctrine_UnitOfWork_TestCase());
 $core->addTestCase(new Doctrine_Collection_TestCase());
 $core->addTestCase(new Doctrine_Collection_Snapshot_TestCase());