|Run all the test||⌘ U|
|Run 1 test||ctrl ⌥ ⌘ U|
|Re-run last||ctrl ⌥ ⌘ G|
Note: Run 1 test will run the test that your cursor is on.
Of the 3, my favorite got to be re-run last tests
ctrl ⌥ ⌘ G, because I re-run tests a lot while fixing things.