public async Task <bool> Testfor_BorrowInfo() { //Arrange var res = false; //Action service.Setup(repos => repos.BorrowInfo(_bookBorrow.BorrowId)).ReturnsAsync(_bookBorrow); var result = await _SchoolServices.BorrowInfo(_bookBorrow.BorrowId); //Assertion if (result != null) { res = true; } //Assert //final result displaying in text file await File.AppendAllTextAsync("../../../../output_revised.txt", "Testfor_BorrowInfo=" + res + "\n"); return(res); }