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