2001 Mitsubishi Mirage battery

I have a 2001 mitsubishi mirage. Today when I went to start my car after I dropped my so off at grand moms it would not crank. Just a click as if the battery was dead. So I take the battery to auto zone to get tested and it tested good. So I assume its the starter. When I connect the battery back. I put the key in the ignition I hear the ding ding sound I always hear. I go to start the engine and just click again. I try to do it again but this time no ding ding sound when I put the key in the ignitions. Remind you that before I took the battery to auto zone the first time it did the same thing with the ding ding as I describe earlier. Also the heads lights won't come on or the horn blows. There is now power comming to the car. What do you think?