### Question:
SystemDataMeta extends BaseStepMeta implements StepMetaInterface { @Override public void loadXML( Node stepnode, List<DatabaseMeta> databases, IMetaStore metaStore ) throws KettleXMLException { readData( stepnode ); } SystemDataMeta(); String[] getFieldName(); void setFieldName( String[] fieldName ); SystemDataTypes[] getFieldType(); void setFieldType( SystemDataTypes[] fieldType ); @Override void loadXML( Node stepnode, List<DatabaseMeta> databases, IMetaStore metaStore ); void allocate( int count ); @Override Object clone(); static final SystemDataTypes getType( String type ); static final String getTypeDesc( SystemDataTypes t ); @Override void setDefault(); @Override void getFields( RowMetaInterface row, String name, RowMetaInterface[] info, StepMeta nextStep,
    VariableSpace space, Repository repository, IMetaStore metaStore ); @Override String getXML(); @Override void readRep( Repository rep, IMetaStore metaStore, ObjectId id_step, List<DatabaseMeta> databases ); @Override void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step ); @Override void check( List<CheckResultInterface> remarks, TransMeta transMeta, StepMeta stepMeta,
    RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, VariableSpace space,
    Repository repository, IMetaStore metaStore ); @Override Map<String, String> getUsedArguments(); @Override StepInterface getStep( StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr,
    TransMeta transMeta, Trans trans ); @Override StepDataInterface getStepData(); @Override boolean equals( Object o ); @Override int hashCode();  }### Answer:
@Test public void testLoadXML() throws Exception { SystemDataMeta systemDataMeta = new SystemDataMeta(); DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder(); Document document = documentBuilder.parse( new InputSource( new StringReader( expectedXML ) ) ); Node node = document; IMetaStore store = null; systemDataMeta.loadXML( node, null, store ); assertEquals( expectedSystemDataMeta, systemDataMeta ); }