Added unit test for DateTime/DateTimeTz default timestamps; made same change for SQL server.

lib/Doctrine/DBAL/Platforms/SQLServerPlatform.php

@@ -1458,7 +1458,7 @@ class SQLServerPlatform extends AbstractPlatform
             return " DEFAULT " . $field['default'];
         }
 
-        if ((string) $field['type'] == 'DateTime' && $field['default'] == $this->getCurrentTimestampSQL()) {
+        if (in_array((string) $field['type'], array('DateTime', 'DateTimeTz')) && $field['default'] == $this->getCurrentTimestampSQL()) {
             return " DEFAULT " . $this->getCurrentTimestampSQL();
         }
 

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

@@ -440,6 +440,29 @@ abstract class AbstractPlatformTestCase extends \Doctrine\Tests\DbalTestCase
         $this->markTestSkipped('Platform does not support Column comments.');
     }
 
+    public function testGetDefaultValueDeclarationSQL()
+    {
+        // timestamps on datetime types should not be quoted
+        foreach (array('datetime', 'datetimetz') as $type) {
+
+            $field = array(
+                'type' => Type::getType($type),
+                'default' => $this->_platform->getCurrentTimestampSQL()
+            );
+
+            $this->assertEquals(' DEFAULT ' . $this->_platform->getCurrentTimestampSQL(), $this->_platform->getDefaultValueDeclarationSQL($field));
+
+        }
+
+        // non-timestamp value will get single quotes
+        $field = array(
+            'type' => 'string',
+            'default' => 'non_timestamp'
+        );
+
+        $this->assertEquals(" DEFAULT 'non_timestamp'", $this->_platform->getDefaultValueDeclarationSQL($field));
+    }
+
     /**
      * @group DBAL-45
      */