### Question:
DefaultConfigurationAccessor implements ConfigurationAccessor { @Override public void deleteConfiguration(ConfigurationModel configModel) throws AlertDatabaseConstraintException { if (configModel == null) { throw new AlertDatabaseConstraintException("Cannot delete a null object from the database"); } deleteConfiguration(configModel.getConfigurationId()); } @Autowired  DefaultConfigurationAccessor(RegisteredDescriptorRepository registeredDescriptorRepository, DescriptorTypeRepository descriptorTypeRepository, DefinedFieldRepository definedFieldRepository,
        DescriptorConfigRepository descriptorConfigsRepository, ConfigGroupRepository configGroupRepository, ConfigContextRepository configContextRepository, FieldValueRepository fieldValueRepository,
        EncryptionUtility encryptionUtility); @Override List<ConfigurationJobModel> getAllJobs(); @Override Optional<ConfigurationJobModel> getJobById(UUID jobId); @Override List<ConfigurationJobModel> getJobsByFrequency(FrequencyType frequency); @Override ConfigurationJobModel createJob(Collection<String> descriptorNames, Collection<ConfigurationFieldModel> configuredFields); @Override ConfigurationJobModel updateJob(UUID jobId, Collection<String> descriptorNames, Collection<ConfigurationFieldModel> configuredFields); @Override void deleteJob(UUID jobId); @Override Optional<ConfigurationModel> getProviderConfigurationByName(String providerConfigName); @Override Optional<ConfigurationModel> getConfigurationById(Long id); @Override List<ConfigurationModel> getConfigurationsByDescriptorKey(DescriptorKey descriptorKey); @Override List<ConfigurationModel> getConfigurationsByDescriptorType(DescriptorType descriptorType); @Override List<ConfigurationModel> getChannelConfigurationsByFrequency(FrequencyType frequencyType); @Override List<ConfigurationModel> getConfigurationsByDescriptorKeyAndContext(DescriptorKey descriptorKey, ConfigContextEnum context); @Override ConfigurationModel createConfiguration(DescriptorKey descriptorKey, ConfigContextEnum context, Collection<ConfigurationFieldModel> configuredFields); @Override List<ConfigurationModel> getConfigurationsByDescriptorNameAndContext(String descriptorName, ConfigContextEnum context); @Override ConfigurationModel updateConfiguration(Long descriptorConfigId, Collection<ConfigurationFieldModel> configuredFields); @Override void deleteConfiguration(ConfigurationModel configModel); @Override void deleteConfiguration(Long descriptorConfigId); static final String EXCEPTION_FORMAT_DESCRIPTOR_KEY_IS_NOT_VALID; }### Answer:
@Test public void deleteConfigurationTest() throws Exception { ConfigurationModel configurationModel = new ConfigurationModel(1L, 2L, "dateCreated", "lastUpdated", configContextEnum); DefaultConfigurationAccessor configurationAccessor = new DefaultConfigurationAccessor(null, null, null, descriptorConfigRepository, null, null, null, null); configurationAccessor.deleteConfiguration(configurationModel); Mockito.verify(descriptorConfigRepository).deleteById(Mockito.any()); }
@Test public void deleteConfigurationNullConfigModelTest() throws Exception { DefaultConfigurationAccessor configurationAccessor = new DefaultConfigurationAccessor(null, null, null, null, null, null, null, null); try { ConfigurationModel configurationModel = null; configurationAccessor.deleteConfiguration(configurationModel); fail("Null configurationModel did not throw expected AlertDatabaseConstraintException."); } catch (AlertDatabaseConstraintException e) { assertNotNull(e); } }
@Test public void deleteConfigurationNullDescriptorConfigIdTest() throws Exception { DefaultConfigurationAccessor configurationAccessor = new DefaultConfigurationAccessor(null, null, null, null, null, null, null, null); try { Long descriptorConfigId = null; configurationAccessor.deleteConfiguration(descriptorConfigId); fail("Null descriptorConfigId did not throw expected AlertDatabaseConstraintException."); } catch (AlertDatabaseConstraintException e) { assertNotNull(e); } }