I tend to agree with Impersonal here.
I take a nihilistic outlook, and do not believe that these animals' lives have any value, in a spiritual sense. We, as humans, live in a society created explicitly for the benefit of humans. Most people would agree on this, whether like me, you believe no life has value, or that you believe that all life has value but human life has more value, arbitrarily or otherwise. I do believe that animals have value, but only in the sense that their existences are beneficial to humans and human society, i.e. if the only animals were humans, every ecosystem on the planet would collapse, but I digress.
In essence, I am completely for animal testing, no matter how seemingly frivolous.