### Question:
StepAnalyzerProvider extends BaseKettleMetaverseComponent implements IStepAnalyzerProvider { @Override public List<IStepAnalyzer> getAnalyzers() { return stepAnalyzers; }  @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 testGetAnalyzersEmpty() throws Exception { assertNotNull( provider.getAnalyzers() ); assertTrue( provider.getAnalyzers().isEmpty() ); }
@Test public void testGetAnalyzersNonEmpty() throws Exception { assertTrue( provider.getAnalyzers().isEmpty() ); List<IStepAnalyzer> analyzerSet = new ArrayList<IStepAnalyzer>() {{ add( mockStepAnalyzer ); }}; provider.stepAnalyzers = analyzerSet; assertFalse( provider.getAnalyzers().isEmpty() ); }
@Test public void testGetAnalyzersForClass() throws Exception { Set<IStepAnalyzer> baseStepAnalyzerSet = Sets.newSet( mock( IStepAnalyzer.class ) ); Set<IStepAnalyzer> tableOutputStepAnalyzerSet = Sets.newSet( mock( IStepAnalyzer.class ) ); provider.analyzerTypeMap.put( BaseStepMeta.class, baseStepAnalyzerSet ); provider.analyzerTypeMap.put( TableOutputMeta.class, tableOutputStepAnalyzerSet ); List<IStepAnalyzer> analyzers = provider.getAnalyzers( new ArrayList() {{ add( BaseStepMeta.class ); add( TableOutputMeta.class ); }} ); assertEquals( analyzers.size(), 2 ); analyzers = provider.getAnalyzers( new HashSet() {{ add( TableOutputMeta.class ); }} ); assertEquals( analyzers.size(), 1 ); }