public function testAlias()
 {
     $this->assertEquals('foo.ID', BookPeer::alias('foo', BookPeer::ID), 'alias() returns a column name using the table alias');
     $this->assertEquals('book.ID', BookPeer::alias('book', BookPeer::ID), 'alias() returns a column name using the table alias');
     $this->assertEquals('foo.COVER_IMAGE', MediaPeer::alias('foo', MediaPeer::COVER_IMAGE), 'alias() also works for lazy-loaded columns');
     $this->assertEquals('foo.SUBTITLE', EssayPeer::alias('foo', EssayPeer::SUBTITLE), 'alias() also works for columns with custom phpName');
 }