0dab2468ee
Add a --no-tags option to clone without fetching any tags.
Without this change there's no easy way to clone a repository without
also fetching its tags.
When supplying --single-branch the primary remote branch will be
cloned, but in addition tags will be followed & retrieved. Now
--no-tags can be added --single-branch to clone a repository without
tags, and which only tracks a single upstream branch.
This option works without --single-branch as well, and will do a
normal clone but not fetch any tags.
Many git commands pay some fixed overhead as a function of the number
of references. E.g. creating ~40k tags in linux.git will cause a
command like `git log -1 >/dev/null` to run in over a second instead
of in a matter of milliseconds, in addition numerous other things will
slow down, e.g. "git log <TAB>" with the bash completion will slowly
show ~40k references instead of 1.
The user might want to avoid all of that overhead to simply use a
repository like that to browse the "master" branch, or something like
a CI tool might want to keep that one branch up-to-date without caring
about any other references.
Without this change the only way of accomplishing this was either by
manually tweaking the config in a fresh repository:
git init git &&
cat >git/.git/config <<EOF &&
[remote "origin"]
url = git@github.com:git/git.git
tagOpt = --no-tags
fetch = +refs/heads/master:refs/remotes/origin/master
[branch "master"]
remote = origin
merge = refs/heads/master
EOF
cd git &&
git pull
Which requires hardcoding the "master" name, which may not be the main
--single-branch would have retrieved, or alternatively by setting
tagOpt=--no-tags right after cloning & deleting any existing tags:
git clone --single-branch git@github.com:git/git.git &&
cd git &&
git config remote.origin.tagOpt --no-tags &&
git tag -l | xargs git tag -d
Which of course was also subtly buggy if --branch was pointed at a
tag, leaving the user in a detached head:
git clone --single-branch --branch v2.12.0 git@github.com:git/git.git &&
cd git &&
git config remote.origin.tagOpt --no-tags &&
git tag -l | xargs git tag -d
Now all this complexity becomes the much simpler:
git clone --single-branch --no-tags git@github.com:git/git.git
Or in the case of cloning a single tag "branch":
git clone --single-branch --branch v2.12.0 --no-tags git@github.com:git/git.git
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
238 lines
5.5 KiB
Bash
Executable File
238 lines
5.5 KiB
Bash
Executable File
#!/bin/sh
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test_description='test refspec written by clone-command'
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. ./test-lib.sh
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test_expect_success 'setup' '
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# Make two branches, "master" and "side"
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echo one >file &&
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git add file &&
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git commit -m one &&
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echo two >file &&
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git commit -a -m two &&
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git tag two &&
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echo three >file &&
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git commit -a -m three &&
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git checkout -b side &&
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echo four >file &&
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git commit -a -m four &&
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git checkout master &&
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git tag five &&
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# default clone
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git clone . dir_all &&
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# default clone --no-tags
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git clone --no-tags . dir_all_no_tags &&
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# default --single that follows HEAD=master
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git clone --single-branch . dir_master &&
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# default --single that follows HEAD=master with no tags
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git clone --single-branch --no-tags . dir_master_no_tags &&
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# default --single that follows HEAD=side
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git checkout side &&
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git clone --single-branch . dir_side &&
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# explicit --single that follows side
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git checkout master &&
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git clone --single-branch --branch side . dir_side2 &&
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# default --single with --mirror
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git clone --single-branch --mirror . dir_mirror &&
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# default --single with --branch and --mirror
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git clone --single-branch --mirror --branch side . dir_mirror_side &&
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# --single that does not know what branch to follow
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git checkout two^ &&
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git clone --single-branch . dir_detached &&
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# explicit --single with tag
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git clone --single-branch --branch two . dir_tag &&
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# explicit --single with tag and --no-tags
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git clone --single-branch --no-tags --branch two . dir_tag_no_tags &&
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# advance both "master" and "side" branches
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git checkout side &&
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echo five >file &&
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git commit -a -m five &&
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git checkout master &&
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echo six >file &&
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git commit -a -m six &&
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# update tag
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git tag -d two && git tag two
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'
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test_expect_success 'by default all branches will be kept updated' '
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(
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cd dir_all &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# follow both master and side
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git for-each-ref refs/heads >expect &&
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test_cmp expect actual
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'
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test_expect_success 'by default no tags will be kept updated' '
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(
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cd dir_all &&
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git fetch &&
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git for-each-ref refs/tags >../actual
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) &&
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git for-each-ref refs/tags >expect &&
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test_must_fail test_cmp expect actual &&
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test_line_count = 2 actual
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'
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test_expect_success 'clone with --no-tags' '
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(
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cd dir_all_no_tags &&
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git fetch &&
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git for-each-ref refs/tags >../actual
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) &&
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>expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch while HEAD pointing at master' '
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(
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cd dir_master &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# only follow master
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git for-each-ref refs/heads/master >expect &&
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# get & check latest tags
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test_cmp expect actual &&
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(
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cd dir_master &&
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git fetch --tags &&
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git for-each-ref refs/tags >../actual
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) &&
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git for-each-ref refs/tags >expect &&
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test_cmp expect actual &&
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test_line_count = 2 actual
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'
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test_expect_success '--single-branch while HEAD pointing at master and --no-tags' '
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(
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cd dir_master_no_tags &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# only follow master
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git for-each-ref refs/heads/master >expect &&
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test_cmp expect actual &&
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# get tags (noop)
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(
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cd dir_master_no_tags &&
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git fetch &&
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git for-each-ref refs/tags >../actual
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) &&
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>expect &&
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test_cmp expect actual &&
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test_line_count = 0 actual &&
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# get tags with --tags overrides tagOpt
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(
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cd dir_master_no_tags &&
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git fetch --tags &&
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git for-each-ref refs/tags >../actual
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) &&
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git for-each-ref refs/tags >expect &&
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test_cmp expect actual &&
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test_line_count = 2 actual
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'
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test_expect_success '--single-branch while HEAD pointing at side' '
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(
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cd dir_side &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# only follow side
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git for-each-ref refs/heads/side >expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch with explicit --branch side' '
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(
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cd dir_side2 &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# only follow side
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git for-each-ref refs/heads/side >expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch with explicit --branch with tag fetches updated tag' '
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(
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cd dir_tag &&
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git fetch &&
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git for-each-ref refs/tags >../actual
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) &&
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git for-each-ref refs/tags >expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch with explicit --branch with tag fetches updated tag despite --no-tags' '
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(
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cd dir_tag_no_tags &&
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git fetch &&
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git for-each-ref refs/tags >../actual
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) &&
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git for-each-ref refs/tags/two >expect &&
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test_cmp expect actual &&
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test_line_count = 1 actual
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'
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test_expect_success '--single-branch with --mirror' '
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(
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cd dir_mirror &&
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git fetch &&
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git for-each-ref refs > ../actual
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) &&
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git for-each-ref refs >expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch with explicit --branch and --mirror' '
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(
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cd dir_mirror_side &&
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git fetch &&
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git for-each-ref refs > ../actual
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) &&
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git for-each-ref refs >expect &&
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test_cmp expect actual
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'
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test_expect_success '--single-branch with detached' '
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(
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cd dir_detached &&
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git fetch &&
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git for-each-ref refs/remotes/origin |
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sed -e "/HEAD$/d" \
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-e "s|/remotes/origin/|/heads/|" >../actual
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) &&
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# nothing
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>expect &&
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test_cmp expect actual
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'
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test_done
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