### Question:
CaseFileVariableReader { static String getCaseFileVariables(List<Property> properties) { return properties .stream() .filter(CaseFileVariableReader::isCaseFileVariable) .map(CaseFileVariableReader::toCaseFileVariableString) .collect(Collectors.joining(",")); }  static boolean isCaseFileVariable(Property p);  }### Answer:
@Test public void getCaseFileVariables() { String caseFileVariables = CaseFileVariableReader.getCaseFileVariables(properties); assertEquals(caseFileVariables, "CFV1:Boolean,CFV2:Boolean"); }