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git/t/t3210-pack-refs.sh
Junio C Hamano 41ac414ea2 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 <gitster@pobox.com>
2008-02-01 20:49:34 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Amos Waterland
# Copyright (c) 2006 Christian Couder
#
test_description='git pack-refs should not change the branch semantic
This test runs git pack-refs and git show-ref and checks that the branch
semantic is still the same.
'
. ./test-lib.sh
echo '[core] logallrefupdates = true' >>.git/config
test_expect_success \
'prepare a trivial repository' \
'echo Hello > A &&
git update-index --add A &&
git-commit -m "Initial commit." &&
HEAD=$(git rev-parse --verify HEAD)'
SHA1=
test_expect_success \
'see if git show-ref works as expected' \
'git branch a &&
SHA1=`cat .git/refs/heads/a` &&
echo "$SHA1 refs/heads/a" >expect &&
git show-ref a >result &&
diff expect result'
test_expect_success \
'see if a branch still exists when packed' \
'git branch b &&
git pack-refs --all &&
rm -f .git/refs/heads/b &&
echo "$SHA1 refs/heads/b" >expect &&
git show-ref b >result &&
diff expect result'
test_expect_success 'git branch c/d should barf if branch c exists' '
git branch c &&
git pack-refs --all &&
rm -f .git/refs/heads/c &&
! git branch c/d
'
test_expect_success \
'see if a branch still exists after git pack-refs --prune' \
'git branch e &&
git pack-refs --all --prune &&
echo "$SHA1 refs/heads/e" >expect &&
git show-ref e >result &&
diff expect result'
test_expect_success 'see if git pack-refs --prune remove ref files' '
git branch f &&
git pack-refs --all --prune &&
! test -f .git/refs/heads/f
'
test_expect_success \
'git branch g should work when git branch g/h has been deleted' \
'git branch g/h &&
git pack-refs --all --prune &&
git branch -d g/h &&
git branch g &&
git pack-refs --all &&
git branch -d g'
test_expect_success 'git branch i/j/k should barf if branch i exists' '
git branch i &&
git pack-refs --all --prune &&
! git branch i/j/k
'
test_expect_success \
'test git branch k after branch k/l/m and k/lm have been deleted' \
'git branch k/l &&
git branch k/lm &&
git branch -d k/l &&
git branch k/l/m &&
git branch -d k/l/m &&
git branch -d k/lm &&
git branch k'
test_expect_success \
'test git branch n after some branch deletion and pruning' \
'git branch n/o &&
git branch n/op &&
git branch -d n/o &&
git branch n/o/p &&
git branch -d n/op &&
git pack-refs --all --prune &&
git branch -d n/o/p &&
git branch n'
test_expect_success 'pack, prune and repack' '
git-tag foo &&
git pack-refs --all --prune &&
git show-ref >all-of-them &&
git pack-refs &&
git show-ref >again &&
diff all-of-them again
'
test_done