public function testExtractCollectionByIdentifierListExtractAll()
 {
     $fieldConfigCollection = new Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfigCollection();
     $fieldConfigCollection->addFieldConfig(new Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig($this->configurationBuilderMock, 'field1', $this->aggregateSettings['field1']));
     $fieldConfigCollection->addFieldConfig(new Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig($this->configurationBuilderMock, 'field2', $this->aggregateSettings['field2']));
     $fieldConfigCollection->addFieldConfig(new Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig($this->configurationBuilderMock, 'field3', $this->aggregateSettings['field3']));
     $extractFieldConfigCollection = $fieldConfigCollection->extractCollectionByIdentifierList(array('*'));
     $this->assertEquals(count($extractFieldConfigCollection), 3);
     $this->assertTrue(is_a($extractFieldConfigCollection->getFieldConfigByIdentifier('field1'), 'Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig'));
     $this->assertTrue(is_a($extractFieldConfigCollection->getFieldConfigByIdentifier('field2'), 'Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig'));
     $this->assertTrue(is_a($extractFieldConfigCollection->getFieldConfigByIdentifier('field3'), 'Tx_PtExtlist_Domain_Configuration_Data_Fields_FieldConfig'));
 }