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Add new helper 'test_cmp_refs' to check references in a repository.
Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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SZEDER reported that t5411 failed in Travis CI's s390x environment a
couple of times, and could be reproduced with '--stress' test on this
specific environment. The test failure messages might look like this:
+ test_cmp expect actual
--- expect 2021-01-17 21:55:23.430750004 +0000
+++ actual 2021-01-17 21:55:23.430750004 +0000
@@ -1 +1 @@
-<COMMIT-A> refs/heads/main
+<COMMIT-A> refs/heads/maifatal: the remote end hung up unexpectedly
error: last command exited with $?=1
not ok 86 - proc-receive: not support push options (builtin protocol)
The file 'actual' is filtered from the file 'out' which contains result
of 'git show-ref' command. Due to the error messages from other process
is written into the file 'out' accidentally, t5411 failed. SZEDER finds
the root cause of this issue:
- 'git push' is executed with its standard output and error redirected
to the file 'out'.
- 'git push' executes 'git receive-pack' internally, which inherits
the open file descriptors, so its output and error goes into that
same 'out' file.
- 'git push' ends without waiting for the close of 'git-receive-pack'
for some cases, and the file 'out' is reused for test of
'git show-ref' afterwards.
- A mixture of the output of 'git show-ref' abd 'git receive-pack'
leads to this issue.
The first intuitive reaction to resolve this issue is to remove the
file 'out' after use, so that the newly created file 'out' will have a
different file descriptor and will not be overwritten by the
'git receive-pack' process. But Johannes pointed out that removing an
open file is not possible on Windows. So we use different temporary
file names to store the output of 'git push' to solve this issue.
Reported-by: SZEDER Gábor <szeder.dev@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Helped-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This trick was performed via
$ sed -i -e 's/master/main/g' -e 's/MASTER/MAIN/g' \
-e 's/Master/Main/g' -- t/t5411/*
In the previous commit, we adjusted roughly half of the support files,
to stay under the 100kB limit (mails larger than that are rejected by
the Git mailing list).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Topic "proc-receive-hook" will change the workflow and output of
git-push. Add some basic test cases in t5411 before introducing the new
topic.
Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Jiang Xin
Johannes Schindelin