public function testRemoveFieldWithInvalidName()
 {
     $fields = array('test1' => array('snippets' => 2), 'test2' => array('snippets' => 5));
     $this->_hlt->addFields($fields);
     $this->assertEquals(array('test1', 'test2'), array_keys($this->_hlt->getFields()));
     $this->_hlt->removeField('test1=3');
     // should fail silently and do nothing
     $this->assertEquals(array('test1', 'test2'), array_keys($this->_hlt->getFields()));
 }