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https://github.com/git/git
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88a21979c5
To be able to access all commits of populated submodules referenced by the superproject it is sufficient to only then let "git fetch" recurse into a submodule when the new commits fetched in the superproject record new commits for it. Having these commits present is extremely useful when using the "--submodule" option to "git diff" (which is what "git gui" and "gitk" do since 1.6.6), as all submodule commits needed for creating a descriptive output can be accessed. Also merging submodule commits (added in 1.7.3) depends on the submodule commits in question being present to work. Last but not least this enables disconnected operation when using submodules, as all commits necessary for a successful "git submodule update -N" will have been fetched automatically. So we choose this mode as the default for fetch and pull. Before a new or changed ref from upstream is updated in update_local_ref() "git rev-list <new-sha1> --not --branches --remotes" is used to determine all newly fetched commits. These are then walked and diffed against their parent(s) to see if a submodule has been changed. If that is the case, its path is stored to be fetched after the superproject fetch is completed. Using the "--recurse-submodules" or the "--no-recurse-submodules" option disables the examination of the fetched refs because the result will be ignored anyway. There is currently no infrastructure for storing deleted and new submodules in the .git directory of the superproject. That's why fetch and pull for now only fetch submodules that are already checked out and are not renamed. In t7403 the "--no-recurse-submodules" argument had to be added to "git pull" to avoid failure because of the moved upstream submodule repo. Thanks-to: Jonathan Nieder <jrnieder@gmail.com> Thanks-to: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
304 lines
7.9 KiB
Bash
Executable file
304 lines
7.9 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2010, Jens Lehmann
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test_description='Recursive "git fetch" for submodules'
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. ./test-lib.sh
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pwd=$(pwd)
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add_upstream_commit() {
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(
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cd submodule &&
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head1=$(git rev-parse --short HEAD) &&
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echo new >> subfile &&
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test_tick &&
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git add subfile &&
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git commit -m new subfile &&
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/submodule" > ../expect.err &&
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echo " $head1..$head2 master -> origin/master" >> ../expect.err
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) &&
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(
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cd deepsubmodule &&
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head1=$(git rev-parse --short HEAD) &&
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echo new >> deepsubfile &&
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test_tick &&
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git add deepsubfile &&
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git commit -m new deepsubfile &&
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/deepsubmodule" >> ../expect.err &&
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echo " $head1..$head2 master -> origin/master" >> ../expect.err
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)
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}
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test_expect_success setup '
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mkdir deepsubmodule &&
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(
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cd deepsubmodule &&
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git init &&
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echo deepsubcontent > deepsubfile &&
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git add deepsubfile &&
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git commit -m new deepsubfile
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) &&
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mkdir submodule &&
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(
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cd submodule &&
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git init &&
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echo subcontent > subfile &&
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git add subfile &&
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git submodule add "$pwd/deepsubmodule" deepsubmodule &&
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git commit -a -m new
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) &&
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git submodule add "$pwd/submodule" submodule &&
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git commit -am initial &&
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git clone . downstream &&
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(
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cd downstream &&
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git submodule update --init --recursive
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) &&
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echo "Fetching submodule submodule" > expect.out &&
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echo "Fetching submodule submodule/deepsubmodule" >> expect.out
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'
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test_expect_success "fetch --recurse-submodules recurses into submodules" '
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add_upstream_commit &&
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(
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cd downstream &&
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git fetch --recurse-submodules >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "fetch alone only fetches superproject" '
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add_upstream_commit &&
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(
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cd downstream &&
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git fetch >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "fetch --no-recurse-submodules only fetches superproject" '
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(
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cd downstream &&
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git fetch --no-recurse-submodules >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "using fetchRecurseSubmodules=true in .gitmodules recurses into submodules" '
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(
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cd downstream &&
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git config -f .gitmodules submodule.submodule.fetchRecurseSubmodules true &&
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git fetch >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "--no-recurse-submodules overrides .gitmodules config" '
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add_upstream_commit &&
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(
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cd downstream &&
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git fetch --no-recurse-submodules >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "using fetchRecurseSubmodules=false in .git/config overrides setting in .gitmodules" '
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(
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cd downstream &&
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git config submodule.submodule.fetchRecurseSubmodules false &&
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git fetch >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "--recurse-submodules overrides fetchRecurseSubmodules setting from .git/config" '
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(
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cd downstream &&
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git fetch --recurse-submodules >../actual.out 2>../actual.err &&
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git config --unset -f .gitmodules submodule.submodule.fetchRecurseSubmodules &&
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git config --unset submodule.submodule.fetchRecurseSubmodules
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "--quiet propagates to submodules" '
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(
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cd downstream &&
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git fetch --recurse-submodules --quiet >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "--dry-run propagates to submodules" '
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add_upstream_commit &&
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(
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cd downstream &&
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git fetch --recurse-submodules --dry-run >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err &&
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(
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cd downstream &&
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git fetch --recurse-submodules >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "recurseSubmodules=true propagates into submodules" '
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add_upstream_commit &&
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(
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cd downstream &&
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git config fetch.recurseSubmodules true
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git fetch >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "--recurse-submodules overrides config in submodule" '
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add_upstream_commit &&
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(
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cd downstream &&
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(
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cd submodule &&
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git config fetch.recurseSubmodules false
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) &&
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git fetch --recurse-submodules >../actual.out 2>../actual.err
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) &&
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test_cmp expect.out actual.out &&
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test_cmp expect.err actual.err
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'
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test_expect_success "--no-recurse-submodules overrides config setting" '
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add_upstream_commit &&
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(
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cd downstream &&
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git config fetch.recurseSubmodules true
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git fetch --no-recurse-submodules >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "Recursion doesn't happen when no new commits are fetched in the superproject" '
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(
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cd downstream &&
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(
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cd submodule &&
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git config --unset fetch.recurseSubmodules
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) &&
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git config --unset fetch.recurseSubmodules
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git fetch >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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! test -s actual.err
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'
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test_expect_success "Recursion stops when no new submodule commits are fetched" '
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head1=$(git rev-parse --short HEAD) &&
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git add submodule &&
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git commit -m "new submodule" &&
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head2=$(git rev-parse --short HEAD) &&
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echo "Fetching submodule submodule" > expect.out.sub &&
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echo "From $pwd/." > expect.err.sub &&
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echo " $head1..$head2 master -> origin/master" >> expect.err.sub
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head -2 expect.err >> expect.err.sub &&
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(
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cd downstream &&
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git fetch >../actual.out 2>../actual.err
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) &&
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test_cmp expect.err.sub actual.err &&
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test_cmp expect.out.sub actual.out
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'
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test_expect_success "Recursion doesn't happen when new superproject commits don't change any submodules" '
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add_upstream_commit &&
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head1=$(git rev-parse --short HEAD) &&
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echo a > file &&
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git add file &&
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git commit -m "new file" &&
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/." > expect.err.file &&
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echo " $head1..$head2 master -> origin/master" >> expect.err.file &&
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(
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cd downstream &&
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git fetch >../actual.out 2>../actual.err
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) &&
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! test -s actual.out &&
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test_cmp expect.err.file actual.err
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'
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test_expect_success "Recursion picks up config in submodule" '
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(
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cd downstream &&
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git fetch --recurse-submodules &&
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(
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cd submodule &&
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git config fetch.recurseSubmodules true
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)
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) &&
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add_upstream_commit &&
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head1=$(git rev-parse --short HEAD) &&
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git add submodule &&
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git commit -m "new submodule" &&
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/." > expect.err.sub &&
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echo " $head1..$head2 master -> origin/master" >> expect.err.sub &&
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cat expect.err >> expect.err.sub &&
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(
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cd downstream &&
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git fetch >../actual.out 2>../actual.err &&
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(
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cd submodule &&
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git config --unset fetch.recurseSubmodules
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)
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) &&
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test_cmp expect.err.sub actual.err &&
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test_cmp expect.out actual.out
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'
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test_expect_success "Recursion picks up all submodules when necessary" '
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add_upstream_commit &&
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(
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cd submodule &&
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(
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cd deepsubmodule &&
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git fetch &&
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git checkout -q FETCH_HEAD
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) &&
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head1=$(git rev-parse --short HEAD^) &&
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git add deepsubmodule &&
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git commit -m "new deepsubmodule"
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/submodule" > ../expect.err.sub &&
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echo " $head1..$head2 master -> origin/master" >> ../expect.err.sub
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) &&
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head1=$(git rev-parse --short HEAD) &&
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git add submodule &&
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git commit -m "new submodule" &&
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head2=$(git rev-parse --short HEAD) &&
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echo "From $pwd/." > expect.err.2 &&
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echo " $head1..$head2 master -> origin/master" >> expect.err.2 &&
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cat expect.err.sub >> expect.err.2 &&
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tail -2 expect.err >> expect.err.2 &&
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(
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cd downstream &&
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git fetch >../actual.out 2>../actual.err
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) &&
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test_cmp expect.err.2 actual.err &&
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test_cmp expect.out actual.out
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'
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test_done
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