6436a20284
This sequence works
$ git checkout -b newbranch
$ git commit --allow-empty -m one
$ git show -s newbranch@{1}
and shows the state that was immediately after the newbranch was
created.
But then if you do
$ git reflog expire --expire=now refs/heads/newbranch
$ git commit --allow=empty -m two
$ git show -s newbranch@{1}
you'd be scolded with
fatal: log for 'newbranch' only has 1 entries
While it is true that it has only 1 entry, we have enough
information in that single entry that records the transition between
the state in which the tip of the branch was pointing at commit
'one' to the new commit 'two' built on it, so we should be able to
answer "what object newbranch was pointing at?". But we refuse to
do so.
Make @{0} the special case where we use the new side to look up that
entry. Otherwise, look up @{n} using the old side of the (n-1)th entry
of the reflog.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
116 lines
2.7 KiB
Bash
Executable File
116 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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test_description='test various @{X} syntax combinations together'
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. ./test-lib.sh
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check() {
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test_expect_${4:-success} "$1 = $3" "
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echo '$3' >expect &&
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if test '$2' = 'commit'
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then
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git log -1 --format=%s '$1' >actual
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elif test '$2' = 'ref'
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then
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git rev-parse --symbolic-full-name '$1' >actual
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else
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git cat-file -p '$1' >actual
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fi &&
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test_cmp expect actual
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"
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}
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nonsense() {
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test_expect_${2:-success} "$1 is nonsensical" "
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test_must_fail git rev-parse --verify '$1'
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"
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}
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fail() {
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"$@" failure
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}
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test_expect_success 'setup' '
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test_commit master-one &&
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test_commit master-two &&
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git checkout -b upstream-branch &&
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test_commit upstream-one &&
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test_commit upstream-two &&
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if test_have_prereq !MINGW
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then
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git checkout -b @/at-test
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fi &&
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git checkout -b @@/at-test &&
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git checkout -b @at-test &&
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git checkout -b old-branch &&
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test_commit old-one &&
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test_commit old-two &&
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git checkout -b new-branch &&
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test_commit new-one &&
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test_commit new-two &&
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git branch -u master old-branch &&
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git branch -u upstream-branch new-branch
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'
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check HEAD ref refs/heads/new-branch
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check "@{1}" commit new-one
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check "HEAD@{1}" commit new-one
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check "@{now}" commit new-two
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check "HEAD@{now}" commit new-two
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check "@{-1}" ref refs/heads/old-branch
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check "@{-1}@{0}" commit old-two
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check "@{-1}@{1}" commit old-one
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check "@{u}" ref refs/heads/upstream-branch
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check "HEAD@{u}" ref refs/heads/upstream-branch
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check "@{u}@{1}" commit upstream-one
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check "@{-1}@{u}" ref refs/heads/master
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check "@{-1}@{u}@{1}" commit master-one
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check "@" commit new-two
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check "@@{u}" ref refs/heads/upstream-branch
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check "@@/at-test" ref refs/heads/@@/at-test
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test_have_prereq MINGW ||
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check "@/at-test" ref refs/heads/@/at-test
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check "@at-test" ref refs/heads/@at-test
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nonsense "@{u}@{-1}"
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nonsense "@{0}@{0}"
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nonsense "@{1}@{u}"
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nonsense "HEAD@{-1}"
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nonsense "@{-1}@{-1}"
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# @{N} versus HEAD@{N}
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check "HEAD@{3}" commit old-two
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nonsense "@{3}"
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test_expect_success 'switch to old-branch' '
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git checkout old-branch
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'
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check HEAD ref refs/heads/old-branch
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check "HEAD@{1}" commit new-two
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check "@{1}" commit old-one
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test_expect_success 'create path with @' '
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echo content >normal &&
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echo content >fun@ny &&
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git add normal fun@ny &&
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git commit -m "funny path"
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'
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check "@:normal" blob content
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check "@:fun@ny" blob content
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test_expect_success '@{1} works with only one reflog entry' '
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git checkout -B newbranch master &&
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git reflog expire --expire=now refs/heads/newbranch &&
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git commit --allow-empty -m "first after expiration" &&
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test_cmp_rev newbranch~ newbranch@{1}
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'
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test_expect_success '@{0} works with empty reflog' '
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git checkout -B newbranch master &&
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git reflog expire --expire=now refs/heads/newbranch &&
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test_cmp_rev newbranch newbranch@{0}
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'
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test_done
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