From: Junio C Hamano Date: Fri, 1 Feb 2008 09:50:53 +0000 (-0800) Subject: Sane use of test_expect_failure X-Git-Tag: v1.5.5-rc0~271 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=41ac414ea2bef81af94474cbef25a38868b4788e;p=git.git Sane use of test_expect_failure Originally, test_expect_failure was designed to be the opposite of test_expect_success, but this was a bad decision. Most tests run a series of commands that leads to the single command that needs to be tested, like this: test_expect_{success,failure} 'test title' ' setup1 && setup2 && setup3 && what is to be tested ' And expecting a failure exit from the whole sequence misses the point of writing tests. Your setup$N that are supposed to succeed may have failed without even reaching what you are trying to test. The only valid use of test_expect_failure is to check a trivial single command that is expected to fail, which is a minority in tests of Porcelain-ish commands. This large-ish patch rewrites all uses of test_expect_failure to use test_expect_success and rewrites the condition of what is tested, like this: test_expect_success 'test title' ' setup1 && setup2 && setup3 && ! this command should fail ' test_expect_failure is redefined to serve as a reminder that that test *should* succeed but due to a known breakage in git it currently does not pass. So if git-foo command should create a file 'bar' but you discovered a bug that it doesn't, you can write a test like this: test_expect_failure 'git-foo should create bar' ' rm -f bar && git foo && test -f bar ' This construct acts similar to test_expect_success, but instead of reporting "ok/FAIL" like test_expect_success does, the outcome is reported as "FIXED/still broken". Signed-off-by: Junio C Hamano --- diff --git a/t/README b/t/README index 36f251761..73ed11bfe 100644 --- a/t/README +++ b/t/README @@ -160,14 +160,12 @@ library for your script to use. - test_expect_failure