public void Test_testChg_testing() { //arrange BaseCurrency Euro = new BaseCurrency(); double[] num = { 0.70, 0.68, 0.69, 0.66, 0.69, 0.69, 0.65 }; Currency GBP = new Currency("GBP", 0.70, num); double[] arr = { 1.41, 1.40, 1.39, 1.30, 1.39, 1.39, 1.45 }; Currency JPY = new Currency("JPY", 1.41, arr); double[] hfn = { 310.94, 310.40, 309.78, 309.86, 310.01, 309.99, 310.45 }; Currency HUF = new Currency("HUF", 310.89, hfn); //act Euro.addCurr(GBP); Euro.addCurr(HUF); Euro.addCurr(JPY); double highGBP = Euro.GetHigh(); double lowGBP = Euro.GetLow(); double testGC = Euro.doubChange(); string testGSC = Euro.testChg(); //assert Assert.AreEqual("HUF", testGSC); //Assert.AreEqual(3, Euro.CCList.Count); }