Testing is always a good idea.
I (or had someone else) test the programs I promote with real money deposits starting from the stats recording everthing they should to a seamless installation, that is until the ewallets pulled out.
However, as I understand it some programs credit the first affiliate with the player and not the last so it really depends on how the program writes the cookie.
Although I’m skeptical of some programs I’m more skeptical of a program not crediting a sub-affiliate signup. I’d be interested in hearing anybody’s thoughts on this.
There are just so many steps in the chain. The whole process has to work flawlessly and be accurate, starting from what the affiliate is offering to the casino landing page, download, registration and deposit.