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'git submodule update --merge' merges the commit referenced by the superproject into your local branch, instead of checking it out on a detached HEAD. As evidenced by the addition of "git submodule update --rebase", it is useful to provide alternatives to the default 'checkout' behaviour of "git submodule update". One such alternative is, when updating a submodule to a new commit, to merge that commit into the current local branch in that submodule. This is useful in workflows where you want to update your submodule from its upstream, but you cannot use --rebase, because you have downstream people working on top of your submodule branch, and you don't want to disrupt their work. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
199 lines
4 KiB
Bash
Executable file
199 lines
4 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2009 Red Hat, Inc.
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#
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test_description='Test updating submodules
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This test verifies that "git submodule update" detaches the HEAD of the
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submodule and "git submodule update --rebase/--merge" does not detach the HEAD.
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'
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. ./test-lib.sh
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compare_head()
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{
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sha_master=`git-rev-list --max-count=1 master`
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sha_head=`git-rev-list --max-count=1 HEAD`
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test "$sha_master" = "$sha_head"
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}
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test_expect_success 'setup a submodule tree' '
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echo file > file &&
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git add file &&
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test_tick &&
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git commit -m upstream
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git clone . super &&
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git clone super submodule &&
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(cd super &&
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git submodule add ../submodule submodule &&
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test_tick &&
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git commit -m "submodule" &&
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git submodule init submodule
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) &&
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(cd submodule &&
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echo "line2" > file &&
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git add file &&
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git commit -m "Commit 2"
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) &&
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(cd super &&
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(cd submodule &&
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git pull --rebase origin
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) &&
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git add submodule &&
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git commit -m "submodule update"
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)
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'
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test_expect_success 'submodule update detaching the HEAD ' '
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule update --rebase staying on master' '
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(cd super/submodule &&
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git checkout master
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --rebase submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update --merge staying on master' '
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --merge submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - rebase in .git/config' '
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(cd super &&
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git config submodule.submodule.update rebase
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config but --rebase given' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --rebase submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - merge in .git/config' '
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(cd super &&
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git config submodule.submodule.update merge
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config but --merge given' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --merge submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD^
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule init picks up rebase' '
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(cd super &&
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git config submodule.rebasing.url git://non-existing/git &&
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git config submodule.rebasing.path does-not-matter &&
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git config submodule.rebasing.update rebase &&
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git submodule init rebasing &&
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test "rebase" = $(git config submodule.rebasing.update)
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)
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'
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test_expect_success 'submodule init picks up merge' '
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(cd super &&
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git config submodule.merging.url git://non-existing/git &&
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git config submodule.merging.path does-not-matter &&
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git config submodule.merging.update merge &&
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git submodule init merging &&
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test "merge" = $(git config submodule.merging.update)
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)
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'
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test_done
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