JohnPhilpot?'s Test is amazing.|
Or see (and help write) an completely different purity test, the EastDormPurityTest.
JohnPhilpot?'s Test is amazing.
There are also a more general class of PurityTests, alluded to above and on the AngbandAndPuritySuite node, which test the amount of corruption in your life from a variety of sources. Typical examples include the Hacker Test and the Nerdity Test, available at the armory.com page above.