Message ID | 248d9ffe79272c7a6efef64512d72ccb9a91349a.1619519903.git.gitgitgadget@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Prepare tests for reftable backend | expand |
On Tue, Apr 27 2021, Han-Wen Nienhuys via GitGitGadget wrote: > From: Han-Wen Nienhuys <hanwen@google.com> > > Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> > --- > t/t1401-symbolic-ref.sh | 34 +++++++++++++++++----------------- > 1 file changed, 17 insertions(+), 17 deletions(-) > > diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh > index a4ebb0b65fec..315a62f78019 100755 > --- a/t/t1401-symbolic-ref.sh > +++ b/t/t1401-symbolic-ref.sh > @@ -3,21 +3,20 @@ > test_description='basic symbolic-ref tests' > . ./test-lib.sh > > -# If the tests munging HEAD fail, they can break detection of > -# the git repo, meaning that further tests will operate on > -# the surrounding git repo instead of the trash directory. > -reset_to_sane() { > - echo ref: refs/heads/foo >.git/HEAD > -} > - > -test_expect_success 'symbolic-ref writes HEAD' ' > +test_expect_success 'setup' ' > git symbolic-ref HEAD refs/heads/foo && > - echo ref: refs/heads/foo >expect && > - test_cmp expect .git/HEAD > + test_commit file && > + "$TAR" cf .git.tar .git/ > ' > > -test_expect_success 'symbolic-ref reads HEAD' ' > - echo refs/heads/foo >expect && > +reset_to_sane() { > + rm -rf .git && > + "$TAR" xf .git.tar > +} > + > +test_expect_success 'symbolic-ref read/write roundtrip' ' > + git symbolic-ref HEAD refs/heads/read-write-roundtrip && > + echo refs/heads/read-write-roundtrip >expect && > git symbolic-ref HEAD >actual && > test_cmp expect actual > ' > @@ -25,12 +24,13 @@ test_expect_success 'symbolic-ref reads HEAD' ' > test_expect_success 'symbolic-ref refuses non-ref for HEAD' ' > test_must_fail git symbolic-ref HEAD foo > ' > + > reset_to_sane > > test_expect_success 'symbolic-ref refuses bare sha1' ' > - echo content >file && git add file && git commit -m one && > test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD) > ' > + > reset_to_sane > > test_expect_success 'HEAD cannot be removed' ' > @@ -42,16 +42,16 @@ reset_to_sane > test_expect_success 'symbolic-ref can be deleted' ' > git symbolic-ref NOTHEAD refs/heads/foo && > git symbolic-ref -d NOTHEAD && > - test_path_is_file .git/refs/heads/foo && > - test_path_is_missing .git/NOTHEAD > + git rev-parse refs/heads/foo && > + test_must_fail git symbolic-ref NOTHEAD > ' > reset_to_sane > > test_expect_success 'symbolic-ref can delete dangling symref' ' > git symbolic-ref NOTHEAD refs/heads/missing && > git symbolic-ref -d NOTHEAD && > - test_path_is_missing .git/refs/heads/missing && > - test_path_is_missing .git/NOTHEAD > + test_must_fail git rev-parse refs/heads/missing && > + test_must_fail git symbolic-ref NOTHEAD > ' > reset_to_sane You do end up needing to refactor some rather nasty patterns in this series, so this isn't on you initially... But since we're encountering this "reset_to_sane" pattern, can't we just as easily fix it up with something more obvious than replacing an echo to a specific ref with a tarring up and untarring of the whole .git each time? I.e. something like: # setup the .git initially Then: test_when_finished "rm -rf copy" && git clone . copy && # munge the repo and use "git -C copy" for the tests" ?
On Thu, May 20, 2021 at 5:21 PM Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote: > But since we're encountering this "reset_to_sane" pattern, can't we just > as easily fix it up with something more obvious than replacing an echo > to a specific ref with a tarring up and untarring of the whole .git each > time? > > I.e. something like: > > # setup the .git initially > > Then: > > test_when_finished "rm -rf copy" && > git clone . copy && > # munge the repo and use "git -C copy" for the tests" I think this is actually worse than tarring up the tree. By using clone, your initial state will be affected by any behavior that git-clone does that makes sense when the user is a human. For example, refs/heads/x is renamed to refs/remotes/origin/x. Also, all the timestamps will be off, which might be a problem if there is infrastructure (index refreshes?) that uses timestamps. By contrast, using tar (re)creates a precise snapshot of the initial state.
diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh index a4ebb0b65fec..315a62f78019 100755 --- a/t/t1401-symbolic-ref.sh +++ b/t/t1401-symbolic-ref.sh @@ -3,21 +3,20 @@ test_description='basic symbolic-ref tests' . ./test-lib.sh -# If the tests munging HEAD fail, they can break detection of -# the git repo, meaning that further tests will operate on -# the surrounding git repo instead of the trash directory. -reset_to_sane() { - echo ref: refs/heads/foo >.git/HEAD -} - -test_expect_success 'symbolic-ref writes HEAD' ' +test_expect_success 'setup' ' git symbolic-ref HEAD refs/heads/foo && - echo ref: refs/heads/foo >expect && - test_cmp expect .git/HEAD + test_commit file && + "$TAR" cf .git.tar .git/ ' -test_expect_success 'symbolic-ref reads HEAD' ' - echo refs/heads/foo >expect && +reset_to_sane() { + rm -rf .git && + "$TAR" xf .git.tar +} + +test_expect_success 'symbolic-ref read/write roundtrip' ' + git symbolic-ref HEAD refs/heads/read-write-roundtrip && + echo refs/heads/read-write-roundtrip >expect && git symbolic-ref HEAD >actual && test_cmp expect actual ' @@ -25,12 +24,13 @@ test_expect_success 'symbolic-ref reads HEAD' ' test_expect_success 'symbolic-ref refuses non-ref for HEAD' ' test_must_fail git symbolic-ref HEAD foo ' + reset_to_sane test_expect_success 'symbolic-ref refuses bare sha1' ' - echo content >file && git add file && git commit -m one && test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD) ' + reset_to_sane test_expect_success 'HEAD cannot be removed' ' @@ -42,16 +42,16 @@ reset_to_sane test_expect_success 'symbolic-ref can be deleted' ' git symbolic-ref NOTHEAD refs/heads/foo && git symbolic-ref -d NOTHEAD && - test_path_is_file .git/refs/heads/foo && - test_path_is_missing .git/NOTHEAD + git rev-parse refs/heads/foo && + test_must_fail git symbolic-ref NOTHEAD ' reset_to_sane test_expect_success 'symbolic-ref can delete dangling symref' ' git symbolic-ref NOTHEAD refs/heads/missing && git symbolic-ref -d NOTHEAD && - test_path_is_missing .git/refs/heads/missing && - test_path_is_missing .git/NOTHEAD + test_must_fail git rev-parse refs/heads/missing && + test_must_fail git symbolic-ref NOTHEAD ' reset_to_sane