### Question:
StepAnalyzer extends BaseKettleMetaverseComponent implements
  IClonableStepAnalyzer<T>, IFieldLineageMetadataProvider<T> { public Set<StepField> createStepFields( String fieldName, StepNodes stepNodes ) { Set<StepField> fields = new HashSet<>(); for ( String stepName : stepNodes.getStepNames() ) { fields.add( new StepField( stepName, fieldName ) ); } return fields; }  @Override IMetaverseNode analyze( IComponentDescriptor descriptor, T meta ); @Override void postAnalyze( T meta ); Set<String> getInputStepNames( final T meta, final String fieldName ); String getStepName(); StepNodes getInputs(); StepNodes getOutputs(); void setDescriptor( IComponentDescriptor descriptor ); IComponentDescriptor getDescriptor(); Set<StepField> createStepFields( String fieldName, StepNodes stepNodes ); void validateState( IComponentDescriptor descriptor, T object ); IConnectionAnalyzer getConnectionAnalyzer(); void setConnectionAnalyzer( IConnectionAnalyzer connectionAnalyzer ); Map<String, RowMetaInterface> getInputFields( final TransMeta parentTransMeta,
                                                       final StepMeta parentStepMeta ); @Override Map<String, RowMetaInterface> getInputFields( T meta ); @Override RowMetaInterface getOutputFields( T meta ); @Override Set<IFieldMapping> getFieldMappings( T meta ); @Override Set<ComponentDerivationRecord> getChangeRecords( T meta ); void loadInputAndOutputStreamFields( T meta ); @Override final IClonableStepAnalyzer cloneAnalyzer(); IMetaverseNode getNode( final String name, final String type, final INamespace namespace,
                                 final String nodeKey, final Map<String, IMetaverseNode> nodeMap ); @Override void setDocumentAnalyzer( final IClonableDocumentAnalyzer documentAnalyzer ); @Override IClonableDocumentAnalyzer getDocumentAnalyzer(); @Override void setDocumentDescriptor( final IComponentDescriptor documentDescriptor ); @Override IComponentDescriptor getDocumentDescriptor(); @Override void setDocumentPath( final String documentPath ); static final String NONE; }### Answer:
@Test public void testCreateStepFields() throws Exception { StepNodes stepNodes = new StepNodes(); IMetaverseNode node = mock( IMetaverseNode.class ); stepNodes.addNode( "step1", "fieldname1", node ); stepNodes.addNode( "step2", "fieldname2", node ); Set<StepField> test = analyzer.createStepFields( "test", stepNodes ); assertEquals( 2, test.size() ); for ( StepField stepField : test ) { assertEquals( "test", stepField.getFieldName() ); } }