Add ability to reload test suite without restarting cricket

[avolkov]

I've been using cricket-unittest with pyramid for some time. It's a great piece of software, but I've noticed it's missing a feature that would greatly improve it's usability.

When adding/removing test cases cricket needs to be restarted in order to reload all the tests. It would be much more convenient if there would be a button somewhere in cricket window that would reload all tests.

[freakboy3742]

Completely agreed. Cricket will pick up new tests if you "run all"; but obviously that doesn't help you find just one new test.

UI changes to cricket have been on hold while Toga is being developed; however, Toga is now getting sufficiently mature that revisiting Cricket may be an option.

[avolkov]

Oh, it's totally fine if Cricket finds new test when 'Run all' is pressed, however if any of the tests are modify or deleted and then test suite is re-run with 'Run all' -- Cricket loads new tests, but the old ones still stick around.

Here I'm running Pyramid (1.7-branch) tests cases with Python 2.7.

I ran test suite with 'Run all', then under test_authentication.TestAuthTicket, renamed test_cookie_value to test_cookie_value_new, and I re-run test suite with 'Run all' now instead of only test_cooke_value_new showing up, both of the test cases appear.

If I select the non-existing test case 'test_cookie_value' and run it with 'Run selected' the cricket gives an error -- that the test doesn't exist, which is correct, but cricket shouldn't display non-existing tests in the first place.