public async Task TestPrintDuplicates_ExpectedBehavior(string path, int expected) { // Arrange var service = new FileReaderService(path, new List <string> { " Inc.", " Inc", " Ltd", " LLC.", " LLC", ".com", "Software" }); // Act await service.PrintDuplicates(); var actual = service.DuplicateValues.Count; // Assert Assert.Equal(expected, actual); }