Fix test script to run all tests.
Fix test script to run all tests.

emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas,emilybache/Racing-Car-Katas