### Question:
Ducc implements UniqueColumnCombinationsAlgorithm, RelationalInputParameterAlgorithm,
                             BooleanParameterAlgorithm { @Override public void execute() throws AlgorithmExecutionException { RelationalInput input; input = inputGenerator.generateNewCopy(); PLIBuilder pliBuilder = new PLIBuilder(input, this.nullEqualsNull); List<PositionListIndex> plis = pliBuilder.getPLIList(); DuccAlgorithm duccAlgorithm = new DuccAlgorithm(input.relationName(), input.columnNames(), this.resultReceiver); duccAlgorithm.run(plis); } Ducc(); @Override ArrayList<ConfigurationRequirement<?>> getConfigurationRequirements(); @Override void setRelationalInputConfigurationValue(String identifier, RelationalInputGenerator... values); @Override void execute(); @Override void setResultReceiver(UniqueColumnCombinationResultReceiver receiver); @Override void setBooleanConfigurationValue(String identifier, Boolean... values); @Override String getAuthors(); @Override String getDescription();  }### Answer:
@Test public void testExecute() throws AlgorithmExecutionException, NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException { AlgorithmTestFixture fixture = new AlgorithmTestFixture(); ducc.setRelationalInputConfigurationValue(Ducc.INPUT_HANDLE, fixture.getInputGenerator()); ducc.setResultReceiver(fixture.getUniqueColumnCombinationResultReceiver()); Random random = mock(Random.class); when(random.nextDouble()).thenReturn(1d); ducc.random = random; ducc.execute(); fixture.verifyUniqueColumnCombinationResultReceiver(); }