### Question:
InvestorService { public List<Investor> fetchAllInvestors() { return investorsList; }  List<Investor> fetchAllInvestors(); Investor fetchInvestorById(String investorId); List<Stock> fetchStocksByInvestorId(String investorId, int offset, int limit); Stock fetchSingleStockByInvestorIdAndStockSymbol(String investorId, String symbol); String welcomePage();  }### Answer:
@Test public void testFetchAllInvestors() { int expectedSize = 2; int actualListSize = getInvestorServiceForTest().fetchAllInvestors().size(); assertEquals(expectedSize, actualListSize); }