### Question:
StepAnalyzerProvider extends BaseKettleMetaverseComponent implements IStepAnalyzerProvider { public void setStepAnalyzers( List<IStepAnalyzer> analyzers ) { if ( analyzers == null ) { this.stepAnalyzers = null; } else { if ( this.stepAnalyzers == null ) { this.stepAnalyzers = new ArrayList(); } for ( final IStepAnalyzer analyzer : analyzers ) { if ( !stepAnalyzers.contains( analyzer ) ) { stepAnalyzers.add( analyzer ); } } loadAnalyzerTypeMap(); } }  @Override List<IStepAnalyzer> getAnalyzers(); @Override List<IStepAnalyzer> getAnalyzers( Collection<Class<?>> types ); void setStepAnalyzers( List<IStepAnalyzer> analyzers ); void setClonableStepAnalyzers( List<IStepAnalyzer> analyzers ); @Override void addAnalyzer( IStepAnalyzer analyzer ); void addClonableAnalyzer( IClonableStepAnalyzer analyzer ); @Override void removeAnalyzer( IStepAnalyzer analyzer ); void removeClonableAnalyzer( IClonableStepAnalyzer analyzer );  }### Answer:
@Test public void testSetStepAnalyzersNull() throws Exception { assertNotNull( provider.stepAnalyzers ); assertTrue( provider.stepAnalyzers.isEmpty() ); provider.setStepAnalyzers( null ); assertNull( provider.stepAnalyzers ); }
@Test public void testSetStepAnalyzers() throws Exception { assertNotNull( provider.stepAnalyzers ); assertTrue( provider.stepAnalyzers.isEmpty() ); List<IStepAnalyzer> analyzerSet = new ArrayList<IStepAnalyzer>() {{ add( mockStepAnalyzer ); }}; provider.setStepAnalyzers( analyzerSet ); assertFalse( provider.stepAnalyzers.isEmpty() ); }