public void Success_rate_for_speed_zero()
 {
     Assert.Equal(0.0, AssemblyLine.SuccessRate(0), precision: 1);
 }
 public void Success_rate_for_speed_ten()
 {
     Assert.Equal(0.77, AssemblyLine.SuccessRate(10), precision: 2);
 }
 public void Success_rate_for_speed_five()
 {
     Assert.Equal(0.9, AssemblyLine.SuccessRate(5), precision: 1);
 }
 public void Success_rate_for_speed_nine()
 {
     Assert.Equal(0.8, AssemblyLine.SuccessRate(9), precision: 1);
 }
 public void Success_rate_for_speed_four()
 {
     Assert.Equal(1.0, AssemblyLine.SuccessRate(4), precision: 1);
 }