public StainingRule getStainingRule() {
		return stainingRule;
	}
@Test
	public void testEmptyRule() {
		RuleStainingProperties ruleStainingProperties = new RuleStainingProperties();
		ruleStainingProperties.setNamespace(testNamespace);
		ruleStainingProperties.setGroup(testGroup);
		ruleStainingProperties.setFileName(testFileName);

		ConfigFile configFile = Mockito.mock(ConfigFile.class);
		when(configFile.getContent()).thenReturn(null);
		when(configFileService.getConfigFile(testNamespace, testGroup, testFileName)).thenReturn(configFile);

		StainingRuleManager stainingRuleManager = new StainingRuleManager(ruleStainingProperties, configFileService);
		assertThat(stainingRuleManager.getStainingRule()).isNull();
	}