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git/t/t3203-branch-output.sh
Jeff King 0571979bd6 tag: do not show ambiguous tag names as "tags/foo"
Since b7cc53e9 (tag.c: use 'ref-filter' APIs, 2015-07-11),
git-tag has started showing tags with ambiguous names (i.e.,
when both "heads/foo" and "tags/foo" exists) as "tags/foo"
instead of just "foo". This is both:

  - pointless; the output of "git tag" includes only
    refs/tags, so we know that "foo" means the one in
    "refs/tags".

and

  - ambiguous; in the original output, we know that the line
    "foo" means that "refs/tags/foo" exists. In the new
    output, it is unclear whether we mean "refs/tags/foo" or
    "refs/tags/tags/foo".

The reason this happens is that commit b7cc53e9 switched
git-tag to use ref-filter's "%(refname:short)" output
formatting, which was adapted from for-each-ref. This more
general code does not know that we care only about tags, and
uses shorten_unambiguous_ref to get the short-name. We need
to tell it that we care only about "refs/tags/", and it
should shorten with respect to that value.

In theory, the ref-filter code could figure this out by us
passing FILTER_REFS_TAGS. But there are two complications
there:

  1. The handling of refname:short is deep in formatting
     code that does not even have our ref_filter struct, let
     alone the arguments to the filter_ref struct.

  2. In git v2.7.0, we expose the formatting language to the
     user. If we follow this path, it will mean that
     "%(refname:short)" behaves differently for "tag" versus
     "for-each-ref" (including "for-each-ref refs/tags/"),
     which can lead to confusion.

Instead, let's add a new modifier to the formatting
language, "strip", to remove a specific set of prefix
components. This fixes "git tag", and lets users invoke the
same behavior from their own custom formats (for "tag" or
"for-each-ref") while leaving ":short" with its same
consistent meaning in all places.

We introduce a test in t7004 for "git tag", which fails
without this patch. We also add a similar test in t3203 for
"git branch", which does not actually fail. But since it is
likely that "branch" will eventually use the same formatting
code, the test helps defend against future regressions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-01-26 13:34:10 -08:00

187 lines
3.9 KiB
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Executable file

#!/bin/sh
test_description='git branch display tests'
. ./test-lib.sh
test_expect_success 'make commits' '
echo content >file &&
git add file &&
git commit -m one &&
echo content >>file &&
git commit -a -m two
'
test_expect_success 'make branches' '
git branch branch-one &&
git branch branch-two HEAD^
'
test_expect_success 'make remote branches' '
git update-ref refs/remotes/origin/branch-one branch-one &&
git update-ref refs/remotes/origin/branch-two branch-two &&
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/branch-one
'
cat >expect <<'EOF'
branch-one
branch-two
* master
EOF
test_expect_success 'git branch shows local branches' '
git branch >actual &&
test_cmp expect actual
'
test_expect_success 'git branch --list shows local branches' '
git branch --list >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
branch-one
branch-two
EOF
test_expect_success 'git branch --list pattern shows matching local branches' '
git branch --list branch* >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
origin/HEAD -> origin/branch-one
origin/branch-one
origin/branch-two
EOF
test_expect_success 'git branch -r shows remote branches' '
git branch -r >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
branch-one
branch-two
* master
remotes/origin/HEAD -> origin/branch-one
remotes/origin/branch-one
remotes/origin/branch-two
EOF
test_expect_success 'git branch -a shows local and remote branches' '
git branch -a >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
two
one
two
EOF
test_expect_success 'git branch -v shows branch summaries' '
git branch -v >tmp &&
awk "{print \$NF}" <tmp >actual &&
test_cmp expect actual
'
cat >expect <<'EOF'
two
one
EOF
test_expect_success 'git branch --list -v pattern shows branch summaries' '
git branch --list -v branch* >tmp &&
awk "{print \$NF}" <tmp >actual &&
test_cmp expect actual
'
test_expect_success 'git branch -v pattern does not show branch summaries' '
test_must_fail git branch -v branch*
'
test_expect_success 'git branch shows detached HEAD properly' '
cat >expect <<EOF &&
* (HEAD detached at $(git rev-parse --short HEAD^0))
branch-one
branch-two
master
EOF
git checkout HEAD^0 &&
git branch >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch shows detached HEAD properly after checkout --detach' '
git checkout master &&
cat >expect <<EOF &&
* (HEAD detached at $(git rev-parse --short HEAD^0))
branch-one
branch-two
master
EOF
git checkout --detach &&
git branch >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch shows detached HEAD properly after moving' '
cat >expect <<EOF &&
* (HEAD detached from $(git rev-parse --short HEAD))
branch-one
branch-two
master
EOF
git reset --hard HEAD^1 &&
git branch >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch shows detached HEAD properly from tag' '
cat >expect <<EOF &&
* (HEAD detached at fromtag)
branch-one
branch-two
master
EOF
git tag fromtag master &&
git checkout fromtag &&
git branch >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch shows detached HEAD properly after moving from tag' '
cat >expect <<EOF &&
* (HEAD detached from fromtag)
branch-one
branch-two
master
EOF
git reset --hard HEAD^1 &&
git branch >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch `--sort` option' '
cat >expect <<-\EOF &&
* (HEAD detached from fromtag)
branch-two
branch-one
master
EOF
git branch --sort=objectsize >actual &&
test_i18ncmp expect actual
'
test_expect_success 'git branch --points-at option' '
cat >expect <<-\EOF &&
branch-one
master
EOF
git branch --points-at=branch-one >actual &&
test_cmp expect actual
'
test_expect_success 'ambiguous branch/tag not marked' '
git tag ambiguous &&
git branch ambiguous &&
echo " ambiguous" >expect &&
git branch --list ambiguous >actual &&
test_cmp expect actual
'
test_done