Testable Fuss is a small open sourced project which can be used by YOU to test your SQL Injection ability.
Download the Testable Fuss project from here and extract it on the root folder of your Server or Localhost directory.
And Now to install it go to:
http://yourhost.com/tfuss/install
After installation go to your phpmyadmin and import the test.sql on it.
Currently there is test for Simple SQL, Batched SQL and XSS Injection available.