1996 Dodge Ram Do I need to replace my compressor

I've had a condenser that has had a small hole in it for the last three month. I'm getting ready to replace the condenser and the accumulator and receiver drier. I was told that since the compressor was still spinning whenever I had the defrosters on that I'll also need to replace the compressor. Is this true? How can I tell if the compressor needs to be replaced?